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Failure pattern in ceramic metallic target under ballistic impact
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作者 M.A.Iqbal M.K.Khan 《Defence Technology(防务技术)》 SCIE EI CAS CSCD 2024年第10期173-190,共18页
The ballistic resistance and failure pattern of a bi-layer alumina 99.5%-aluminium alloy 1100-H12 target against steel 4340 ogival nosed projectile has been explored in the present experimental cum numerical study.In ... The ballistic resistance and failure pattern of a bi-layer alumina 99.5%-aluminium alloy 1100-H12 target against steel 4340 ogival nosed projectile has been explored in the present experimental cum numerical study.In the experimental investigation,damage induced in the ceramic layer has been quantified in terms of number of cracks developed and failure zone dimensions.The resultant damage in the backing layer has been studied with variation in the bulge and perforation hole in the backing layer with the varying incidence velocity.The discussion of the experimental results has been further followed by three dimensional finite element computations using ABAQUS/Explicit finite code to investigate the behaviour of different types of bi-layer targets under multi-hit projectile impact.The JH-2 constitutive model has been used to reproduce the behaviour of alumina 99.5%and JC constitutive model has been used for steel 4340 and aluminium alloy 1100-H12.The total energy dissipation has been noted to be of lesser magnitude in case of sub-sequential impact in comparison to simultaneous impact of two projectiles.The distance between the impact points of two projectiles also effected the ballistic resistance of bi-layer target.The ballistic resistance of single tile ceramic front layer and four tile ceramic of equivalent area found to be dependent upon the boundary conditions provided to the target. 展开更多
关键词 Ballistic resistance Bi-layer target ceramic metal armour Multi-hit impact Finite element modelling
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Atomically bonding Na anodes with metallized ceramic electrolytes by ultrasound welding for high-energy/power solid-state sodium metal batteries 被引量:2
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作者 Dongchen Li Xinxin Wang +7 位作者 Qi Guo Xiaole Yu Shangxu Cen Huirong Ma Jingjing Chen Dajian Wang Zhiyong Mao Chenlong Dong 《Carbon Energy》 SCIE CSCD 2023年第2期184-192,共9页
A solid-state sodium metal battery has cut a striking figure in next-generation large-scale energy storage technology on account of high safety,high energy density,and low cost.Nevertheless,the large interfacial resis... A solid-state sodium metal battery has cut a striking figure in next-generation large-scale energy storage technology on account of high safety,high energy density,and low cost.Nevertheless,the large interfacial resistance and sodium dendrite growth originating from the poor interface contact seriously hinder its practical application.Herein,a modified ultrasound welding was proposed to atomically bond Na anodes and Au-metalized Na_(3)Zr_(2)Si_(2)PO_(12) electrolytes associated with the in situ formation of Na–Au alloy interlayers.Thereupon,intimate Na_(3)Zr_(2)Si_(2)PO_(12)-Au/Na interfaces with a low interfacial resistance(~23Ωcm^(2))and a strong dendrite inhibition ability were constructed.The optimized Na symmetric battery can cycle steadily for more than 900 h at 0.3 mA cm^(-2) under a low overpotential(<50 mV)of Na electroplating/stripping and deliver a high critical current density of 0.8 mAcm^(-2) at room temperature.By incorporating the above interface into the solid-state Na metal battery,taking three-dimensional Na_(3)V_(2)(PO_(4))_(3) as the cathode,the full battery offers a high energy density of 291 Wh kg^(-1) at a high power density of 1860Wkg^(-1).A pouch-type solid-state sodium metal full battery based on a ceramic electrolyte was assembled for the first time,and it lit a 3 V LED lamp.Such a strategy of the ultrasound welding metalized solid-state electrolyte/Na interface by engineering the Na-Au interlayer would pave a new pathway to engineer a low-resistance and highly stable interface for high-energy/density solid-state sodium metal batteries. 展开更多
关键词 intimate interface contact metallized ceramics Na-Au interlayer solid-state sodium metal battery ultrasound welding
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Reactive synthesis Ti (CN) -based metal ceramic coating by electric-spark deposition 被引量:1
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作者 郝建军 马璐萍 +2 位作者 李建昌 赵建国 马跃进 《China Welding》 EI CAS 2009年第3期46-50,共5页
Electric-spark deposition (ESD) was adopted for depositing a Ti( CN) -based ceramic coating on the TC4 titanium alloy substrate using a laboratory-developed electric-spark deposition system, a nitrogen-sealed atmo... Electric-spark deposition (ESD) was adopted for depositing a Ti( CN) -based ceramic coating on the TC4 titanium alloy substrate using a laboratory-developed electric-spark deposition system, a nitrogen-sealed atmosphere and graphite electrode. The surface morphology, microstructure, interfacial behavior between the coatings and substrate, phase and element composition of the coatings were investigated by scanning electron microscope ( SEM ) , X-ray diffraction ( XRD ) , X-ray photoelectron spectroscopy ( XPS ) and Auger electron spectroscopy ( AES ) . Microhardness profile was measured with a Vickers microhardness tester. The results show that metallurgical bond between the coating and substrate is realized and the phase of coatings are made up of Ti( CN ) spherocrystal and dendritic crystal, TiV and C. Ti( CN) ceramic particles, which is in-situ synthesized by the reaction among titanium from the substrate, carbon from the graphite electrode and nitrogen from the shielding nitrogen gas, is about 600 mn and distributes dispersively among the coatings. Microharduess profile falls off with the coatings thickness increasing and the highest microhardness values of the superficial coating could be up to 1 496HV, which is six times more than that of the substrate. 展开更多
关键词 electric-spark deposition reactive synthesis Ti(CN)-based metal ceramic coating
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FEM simulation on residual stress distribution during diffusion bonding between Ti ( C, N) metallic ceramic/interlayer/40Cr steel 被引量:1
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作者 吴铭方 王凤江 +1 位作者 胡庆贤 胥国祥 《China Welding》 EI CAS 2014年第3期48-52,共5页
Based on ANSYS FEM software, the distribution of residual stress in the diffusion bonding joints between Ti( C,N) metallic ceramic/interlayer/4OCr steel was calculated and experimentally ver^ed. The results showed t... Based on ANSYS FEM software, the distribution of residual stress in the diffusion bonding joints between Ti( C,N) metallic ceramic/interlayer/4OCr steel was calculated and experimentally ver^ed. The results showed that the trend on the distribution of residual stress field in the joints was not changed with the use of interlayer. The maximum residual stress was always located in metallic ceramic with area ranging from 1 mm to 4 mm to the interlayer. The maximum residual stress in the joints was also affected by diffusion temperature. The satellite pulse current during the initial stage on diffusion bonding can promote the formation of liquid film at the interface, by which diffusion temperature and loading pressure can be greatly decreased. The crack initiation was easily produced at the corner of Ti ( C, N) metallic ceramic close to the interlayer. If a higher residual stress produced in the joints, the crack was propagated into the whole ceramic. 展开更多
关键词 Ti(C N) metallic ceramic 40Cr steel diffusion bonding axial residual stress
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Numerical Simulation on Ceramic/Metal Armours Impacted by Deformable Projectile
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作者 Zhang Xiaoqing Yao Xiaohu Yang Guitong 《上海交通大学学报》 EI CAS CSCD 北大核心 2004年第z2期142-146,共5页
Numerical simulation for the dynamic response of ceramic/metal armours impacted by deformable projectile is carried out with LS-DYNA3D.The simulated penetration processes are shown. The mushrooming of the projectile i... Numerical simulation for the dynamic response of ceramic/metal armours impacted by deformable projectile is carried out with LS-DYNA3D.The simulated penetration processes are shown. The mushrooming of the projectile is displayed. A distinct conoid shaped zone of fragmented ceramic is observed. A significant bending of the backing plate is revealed. Simulation results match fairly well with the experimental values and the theoretical analysis results. The accuracy of the numerical simulation is validated. 展开更多
关键词 deformable PROJECTILE ceramic/METAL armours NUMERICAL SIMULATION
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Study on Thermal Expansion Coefficient of Sealing Materials for Ceramic Metal Halide Lamps
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作者 刘玉柱 耿志挺 +1 位作者 庄卫东 何华强 《Journal of Rare Earths》 SCIE EI CAS CSCD 2007年第2期249-252,共4页
With Al2O3, Dy2O3, and SiO2 as starting materials, the basic glass of Al2O3-Dy2O3-SiO2 system was prepared by conventional melting technology, and their thermal expansion coefficients (TECs) at different anneal time... With Al2O3, Dy2O3, and SiO2 as starting materials, the basic glass of Al2O3-Dy2O3-SiO2 system was prepared by conventional melting technology, and their thermal expansion coefficients (TECs) at different anneal time were investigated. TECs of the basic glass, which were heat-treated under different temperature, were also investigated. The result showed that TECs of the basic glass gradually approached a fixed value as the anneal time was extended, which suggested that most of the inner stress had been eliminated. After heat treatment, the contents of Dy2O3, Dy2Si2O7, and a new crystal increased up to 1200 ℃ and decreased below 1250 ℃, which was consistent with the TEC change of crystallized samples. This suggests that the crystal has a direct effect on TECs of the crystallized samples. 展开更多
关键词 thermal expansion coefficient sealing frit material ceramic metal halide lamp rare earths
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Direct Comparison between Tensile Strength and Flexural Strength of Ceramic/Metal Brazing Joint
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作者 冼爱平 斯重遥 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 1992年第1期30-34,共5页
A design of the sandwich joint,steel/ ceramic/steel,was made for direct comparison be- tween tensile and flexural strength of ceramic/metal joint.The flexural strength is about twice as high as the tensile strength fo... A design of the sandwich joint,steel/ ceramic/steel,was made for direct comparison be- tween tensile and flexural strength of ceramic/metal joint.The flexural strength is about twice as high as the tensile strength for the same joint.The results also showed that the flexural test is more excellent than tensile test for joint with a high interracial bond strength. 展开更多
关键词 ceramic/metal brazing joint BONDING STRENGTH
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ANALYTICAL MODEL OF CERAMIC/METAL ARMOR IMPACTED BY DEFORMABLE PROJECTILE
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作者 张晓晴 杨桂通 黄小清 《Applied Mathematics and Mechanics(English Edition)》 SCIE EI 2006年第3期287-294,共8页
A new analytical model was established to describe the complex behavior of ceramic/metal armor under impact of deformable projectile by assuming some hypotheses. Three aspects were taken into account: the mushrooming... A new analytical model was established to describe the complex behavior of ceramic/metal armor under impact of deformable projectile by assuming some hypotheses. Three aspects were taken into account: the mushrooming deformation of the projectile, the fragment of ceramic tile and the formation and change of ceramic conoid and the deformation of the metal backup plate. Solving the set of equations, all the variables were obtained for the different impact velocities: the extent and particle velocity in rigid zone; the extent, cross-section area and particle velocity in plastic zone; the velocity and depth of penetration of projectile to the target; the reduction in volume and compressive strength of the fractured ceramic conoid; the displacement and movement velocity of the effective zone of backup plate. Agreement observed among analytical result, numerical simulation and experimental result confirms the validity of the model, suggesting the model developed can be a useful tool for ceramic/metal armor design. 展开更多
关键词 ceramic/metal armor deformable projectile analytical model
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Research Progress of Ceramic Metallization Technology 被引量:1
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作者 Yang XIANG Xuechong XIONG +3 位作者 Jin WEN Guangyao ZHAO Zhihang PENG Feng CAO 《Research and Application of Materials Science》 2020年第1期12-16,共5页
Due to the wide application of ceramics in electronic device packaging,the performance of ceramic metallization layer directly determines the performance of the whole package device.This paper introduces the main prep... Due to the wide application of ceramics in electronic device packaging,the performance of ceramic metallization layer directly determines the performance of the whole package device.This paper introduces the main preparation methods of ceramic metallization,discusses the influence of Mo powder size,metallization formula,sintering temperature and other factors on the performance of ceramic metallization layer prepared by activated Mo-Mn method,and introduces several kinds of methods that can be tested to test the performance of ceramic metallized sealing samples.A new research direction of Ceramic Metallization Technology in the advanced field is put forward. 展开更多
关键词 ceramic-metal sealing metallization of ceramics preparation method
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Sintering products molded by injecting ceramic and metal powders
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作者 刘平安 曾令可 李秀艳 《Journal of Central South University of Technology》 2005年第3期269-271,共3页
The injection molding products with different volume ratios of ZrO2 ceramic powder to 316L stainless steel powder were prepared. Properties and structure of the products were characterized by X-ray diffraction(XRD),... The injection molding products with different volume ratios of ZrO2 ceramic powder to 316L stainless steel powder were prepared. Properties and structure of the products were characterized by X-ray diffraction(XRD), scanning electron microscope(SEM) and transmission electron microscope (TEM). The results show that the compressive stress exists in the products and the bend strength reaches 300MPa. ZrO2 phase and stainless steel phase are uniform in samples. The toughness of ceramic increases with the increasing the content of stainless steel. Through TEM study of the interface, some crystalline orientation relationships are determined. 展开更多
关键词 metal ceramic powder injection molding TOUGHNESS STRESS
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Ceramics Surface Modification by Excimer Laser Metal Coating
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作者 Weidou ZHU and Haicheng GU(Dept. of Materials Science and Engineering, Xi’an Jiaotong University, Xi’an, 710049, China) 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 1994年第6期463-465,共3页
Thin metallic layers (~ 2 μm) of Ni were deposited on polycrystalline Al2O3. ZrO2 and (Ce-TZP)+Al2O3 ceramic substrates. and further irradiated with pulsed excimer (Xeno chloride) laser pulses. The laser energy densi... Thin metallic layers (~ 2 μm) of Ni were deposited on polycrystalline Al2O3. ZrO2 and (Ce-TZP)+Al2O3 ceramic substrates. and further irradiated with pulsed excimer (Xeno chloride) laser pulses. The laser energy density was varied from 0.21 to 0.81 J / cm2 to optimize bending strength. For ZrO2 ceramic, it was found that the strength increases from 530 to 753 MPa at 0.51 J / cm2 irradiation. For Al2O3 and (Ce-TZP)+ Al2O3 the fracture strength also increases in varying degree. The causes of strength increment were discussed. 展开更多
关键词 ceramics Surface Modification by Excimer Laser Metal Coating RES
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Effects of metal binder on the microstructure and mechanical properties of Al2O3-based micro-nanocomposite ceramic tool material
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作者 Xiu-ying Ni Jun Zhao +2 位作者 Jia-lin Sun Feng Gong Zuo-li Li 《International Journal of Minerals,Metallurgy and Materials》 SCIE EI CAS CSCD 2017年第7期826-832,共7页
The Al_2O_3-(W,Ti)C composites with Ni and Mo additions varying from 0vol% to 12vol% were prepared via hot pressing sintering under 30 MPa. The microstructure was investigated via X-ray diffraction(XRD) and scanni... The Al_2O_3-(W,Ti)C composites with Ni and Mo additions varying from 0vol% to 12vol% were prepared via hot pressing sintering under 30 MPa. The microstructure was investigated via X-ray diffraction(XRD) and scanning electron microscopy(SEM) equipped with energy dispersive spectrometry(EDS). Mechanical properties such as flexural strength, fracture toughness, and Vickers hardness were also measured. Results show that the main phases A12O3 and(W,Ti)C were detected by XRD. Compound Mo Ni also existed in sintered nanocomposites. The fracture modes of the nanocomposites were both intergranular and transgranular fractures. The plastic deformation of metal particles and crack bridging were the main toughening mechanisms. The maximum flexural strength and fracture toughness were obtained for 9vol% and 12vol% additions of Ni and Mo, respectively. The hardness of the composites reduced gradually with increasing content of metals Ni and Mo. 展开更多
关键词 ceramic matrix nanocomposite metal phase microstructure mechanical properties
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NOTCH WEAR OF MACHINING NICKEL BASED ALLOYS WITH CERAMIC TOOLS
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作者 He Ning Pan Liangxian Zhang Youzhen (Nanjing University of Aeronautics and Astronautics) 《Chinese Journal of Mechanical Engineering》 SCIE EI CAS CSCD 1995年第4期262-266,共17页
The performances of mixed ceramic and sialon ceramic tools in machining nickel based alloy are tested.The negative cutting edge inclination and small tool lead angle are recommended for reducing ceramic tool failure.... The performances of mixed ceramic and sialon ceramic tools in machining nickel based alloy are tested.The negative cutting edge inclination and small tool lead angle are recommended for reducing ceramic tool failure. So called“notching at depth of cut”is not actually at the depth of cutting line, but out of cutting area。 The real reason of notching is caused by shocking of “sawtooth”on sawtooth- shaped burr and fin- shaped edges of chip 展开更多
关键词 ceramic tool Nickel based alloy Notch wear Metal cutting
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金属陶瓷功能梯度热障涂层瞬态热负荷下的破坏分析 被引量:4
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作者 王富耻 王鲁 吕广庶 《兵工学报》 EI CAS CSCD 北大核心 2000年第1期42-45,共4页
本文采用试验分析和热弹性有限元方法研究了用等离子喷涂方法制备的ZrO2 NiCrAl系功能梯度热障涂层在瞬态热负荷下的破坏机理。
关键词 功能梯度材料 热障涂层 瞬态热应力 有限元方法 破坏机理 FAILURE OF METAL/ceramic FUNCTIONALLY GRADIENT
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An Experimental Study of Cutting Performance of Ti(C, N) Based Cermet Cutting Tool
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作者 庞思勤 于启勋 《Journal of Beijing Institute of Technology》 EI CAS 1995年第2期173+168-173,共7页
Through systematic cutting experiments, characteristics of the cutting performance of Ti(C, N) based cermets is identified. The experiments were designed to study their resistance,toughness, cutting force, tool-chip f... Through systematic cutting experiments, characteristics of the cutting performance of Ti(C, N) based cermets is identified. The experiments were designed to study their resistance,toughness, cutting force, tool-chip friction coefficient and machining quality by comparing them with those of WC based cemented carbides. The cutting data and the regressed empirical formulae would be useful to promote proper application of cermet cutting tool materials. 展开更多
关键词 metal ceramics metal cutting cutting ability cutting tests
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First-Principles Study of the Polar TiC/Ti Interface 被引量:3
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作者 Limin LIU, Shaoqing WANG and Hengqiang YEShenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2003年第6期540-544,共5页
The interface structure, work of adhesion, and bonding character of the polar TiC/Ti interface have been examined by the first-principles density functional plane-wave pseudopotential calculations. Both Ti- and C-term... The interface structure, work of adhesion, and bonding character of the polar TiC/Ti interface have been examined by the first-principles density functional plane-wave pseudopotential calculations. Both Ti- and C-terminated interfaces including six different interface structures were calculated, which present quite different features. For the Ti-terminated interface, the interfacial Ti-Ti bond has a strong metallic and weak covalent character; while for the C-terminated interface, the interfacial bond is a strong polar covalent interaction between the Ti-3d and C-2p orbital. The work of adhesion of C-terminated interface is nearly 9 J/m2 stronger than that of the Ti-terminated. It is found that each termination has relatively large work of adhesion, which is consistent with other polar interfaces. 展开更多
关键词 FIRST-PRINCIPLES Metal/ceramic interface ADHESION Carbides
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Study on thermal expansion behavior of Dy_2O_3-Al_2O_3-SiO_2 glass 被引量:1
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作者 刘玉柱 耿志挺 +1 位作者 庄卫东 何华强 《Journal of Rare Earths》 SCIE EI CAS CSCD 2008年第1期85-88,共4页
Employing Dy2O3, Al2O3, and SiO2 as starting materials, several series of Dy2O3-Al2O3-SiO2 sealing glass were prepared. The relationship between their coefficients of thermal expansion and the contents of Dy2O3, Al2O3... Employing Dy2O3, Al2O3, and SiO2 as starting materials, several series of Dy2O3-Al2O3-SiO2 sealing glass were prepared. The relationship between their coefficients of thermal expansion and the contents of Dy2O3, Al2O3, and SiO2 were studied respectively. Experimental results showed that Dy2O3 and Al2O3 had a positive effect on the coefficient of thermal expansion of glass, whereas, SiO2 had a negative effect. The coefficient of thermal expansion of glass showed an apparent linear relation to the contents of these three raw materials, from which an estimation model was built, to calculate the coefficient of thermal expansion of sealing glass. Relative errors of the calculating results to testing results were no more than 2%, which suggested that the estimation model was reasonable. This study provides a good theory reference for the practical utilizing of this sealing material, through which a proper glass composition for good sealing could be easily found. 展开更多
关键词 coefficient of thermal expansion SEALING ceramic metal halide lamp rare earths
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Effect of the stoichiometry on the electronic structure of the Ni(111)/α-Al_2O_3(0001) interface:a first-principles investigation
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作者 施思齐 田中真悟 香山正憲 《Chinese Physics B》 SCIE EI CAS CSCD 2008年第7期2655-2661,共7页
In this paper first-principles calculations of Ni(111)/α-Al2O3(0001) interfaces have been performed, and are compared with the preceding results of the Cu (111)/α-Al2O3(0001) interface [2004 Phil. Mag. Left.... In this paper first-principles calculations of Ni(111)/α-Al2O3(0001) interfaces have been performed, and are compared with the preceding results of the Cu (111)/α-Al2O3(0001) interface [2004 Phil. Mag. Left. 84 425]. The AI- terminated and O-terminated interfaces have quite different adhesion mechanisms, which are similar to the Cu(111)/α Al2O3(0001) interface. For the O-terminated interface, the adhesion is caused by the strong O-2p/Ni-3d orbital hybridization and ionic interactions. On the other hand, the adhesion nature of the Al-terminated interface is the image-like electrostatic and Ni-Al hybridization interactions, the latter is substantial and cannot be neglected. Charge transfer occurs from Al2O3 to Ni, which is opposite to that in the O=terminated interface. The charge transfer direction for the Al-terminated and O-terminated Ni(111)/α-A1203(0001) interfaces is similar to that in the corresponding Cu(111)/α- Al2O3(0001) interface, but there exist the larger charge transfer quantity and consequent stronger adhesion nature, respectively. 展开更多
关键词 metal/ceramic interface STOICHIOMETRY electronic structure first-principles calculations
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A Research on the Joining of SiC Composite to 40 Cr Steel
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作者 Chengchang Jia, Jianxin Chu, Qingshan Zhao 1) Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China 2) Beijing Nonferrous Metals Research Institute, Beijing 100081, China 《Journal of University of Science and Technology Beijing》 CSCD 2001年第4期280-282,共3页
SiC composites and 40 Cr Steels were joined with Ag-Cu-Ti solder in order to develop a new method of joining ceramics to metal. Effects of solder component and process parameters on the joining strength were investiga... SiC composites and 40 Cr Steels were joined with Ag-Cu-Ti solder in order to develop a new method of joining ceramics to metal. Effects of solder component and process parameters on the joining strength were investigated. The results show that some chemical reactions occur on the jointing interface between ceramics and metal. Higher joining strength is achieved when titanium is 0.2% (mass fraction) in the solder. The thickness of solder also affects the joining characteristics, and 0.2-0.3 mm. thickness of solder is the most suitable. 展开更多
关键词 ceramics metal joint SINTERING SiC composites Ag-Cu-Ti solder
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Application of Ag-Cu-Ti active metal composite filler in ceramic joining:a review
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作者 Yuhang Li Jun WANG +7 位作者 Ziyan SHEN Hangli Qian Wanliang Zhang Kaiyu Zhang Danqing Ying Qihang Zhou Chengshuang Zhou Lin Zhang 《Frontiers of Materials Science》 SCIE CSCD 2023年第4期1-35,共35页
As a structural and functional material with excellent properties,ceramics play an extremely important role in a wide range of industries,including life and production.To expand the range of applications for ceramic m... As a structural and functional material with excellent properties,ceramics play an extremely important role in a wide range of industries,including life and production.To expand the range of applications for ceramic materials,ceramics are often joined to metals and then used.Among the physical and chemical joining methods of ceramics to metals,the AMB method is efficient and simple,suitable for industrial applications,and has been a hot topic of research.However,due to the problems of residual stresses caused by the large difference in thermal expansion coefficients between ceramic and metal brazing,composite fillers have become a very worthwhile solution by regulating the physical properties of the brazing material and improving the weld structure.This review describes the wetting principle and application of Ag‒Cu‒Ti active metal filler in the field of ceramic joining,with emphasis on the current stage of composite filler,and discusses the influence on the former brazing properties and organization after the introduction of dissimilar materials. 展开更多
关键词 BRAZING composite filler residual stress active metal ceramic‒metal joints
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