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Effect of mixed rare earth oxides and CaCO_3 modification on the microstructure of an in-situ Mg_2Si/Al-Si composite 被引量:9
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作者 Liu, Zheng Lin, Jixing Jing, Qingxiu 《Rare Metals》 SCIE EI CAS CSCD 2009年第2期169-174,共6页
The effects of mixed rare earth oxides and CaCO3 on the microstructure of an in-situ Mg2Si/Al-Si hypereutectic alloy composite were investigated by optical microscope,scanning electron microscope,and energy dispersive... The effects of mixed rare earth oxides and CaCO3 on the microstructure of an in-situ Mg2Si/Al-Si hypereutectic alloy composite were investigated by optical microscope,scanning electron microscope,and energy dispersive spectrum analysis. The results showed that the morphol-ogy of the primary Mg2Si phase particles changed from irregular or crosses to polygonal shape,their sizes decreased from 75 μm to about 25 μm,and the compound of both the oxide and CaCO3 was better than either the single mixed rare earth o... 展开更多
关键词 hypereutectic alloys Al-Si alloys COMPOSITE rare earth oxides MODIFICATION
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Phase Behavior and Crystal Structure of Perovskite-Type Rare Earth Complex Oxides 被引量:8
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作者 Migaku Kobayashi Ryoko Katsuraya +3 位作者 Tsubasa Nara Yusuke Tomita Hiromi Nakano Naoki Kamegashira 《Journal of Rare Earths》 SCIE EI CAS CSCD 2006年第6期668-672,共5页
Several compounds of rare earth complex oxides containing manganese and titanium were synthesized in Ar, and their crystal structures were analyzed by powder X-ray diffraction data and Rietveld method. Structures of A... Several compounds of rare earth complex oxides containing manganese and titanium were synthesized in Ar, and their crystal structures were analyzed by powder X-ray diffraction data and Rietveld method. Structures of A0.67Ln0.33 Mn0.33Ti0.6703(A = Ca or Sr and Ln = rare earth) were found to have orthorhombic symmetry with the space group Pnrna, and their interatomic distances and bond angles were obtained. This space group was also derived from electron microscopic study. Electrical conductivity of Cao.67Ln0.33Mn0.33Ti0.6703 for several rare earth elements showed a semiconducting property with the activation energy of 0.4 eV. Some of these compounds of the strontium system show the antiferromagnetic properties below 10 K. 展开更多
关键词 perovskite crystal structure X-ray diffraction alkaline earth rare earth manganese titanium oxide
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TUNGSTEN ELECTRODES CONTAINING THREE TYPES OF RARE EARTH OXIDES 被引量:5
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作者 Nie, Zuoren Zhou, Meiling +3 位作者 Chen, Ying Fan, Xiaowu Zhang, Jiuxing Zuo, Tieyong 《中国有色金属学会会刊:英文版》 EI CSCD 1999年第1期38-41,共4页
INTRODUCTIONWithincreasingdemandstothepropertyofweldingelectrodeandbeterknowledgeofThWelectrodematerial’sra... INTRODUCTIONWithincreasingdemandstothepropertyofweldingelectrodeandbeterknowledgeofThWelectrodematerial’sradioactivity,somes... 展开更多
关键词 rare earth oxides TUNGSTEN electrode welding RIM Y 2O 3+La 2O 3+CeO 2
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Morphology, chemical compositions and size distribution of rare earth oxides in pure iron 被引量:4
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作者 ShengiunZhang BoSong +2 位作者 XihuaLiu QingLin BiyanWang 《Journal of University of Science and Technology Beijing》 CSCD 2003年第2期30-33,共4页
The pure iron was melted and deoxidized by metallic Al and rare earth elements La, Ce and Y respectively at 1600℃ in a vertical resistance furnace. The morphology, chemical composition and size distribution of the in... The pure iron was melted and deoxidized by metallic Al and rare earth elements La, Ce and Y respectively at 1600℃ in a vertical resistance furnace. The morphology, chemical composition and size distribution of the inclusions in deoxidized liquid iron have been investigated by using of SEM and image-analysis techniques. The investigated results show that the deoxidation products in molten iron are complex inclusions of rare earth oxide or A12O3 combined with FeO finely distributed. The proper holding time and rapid cooling rate can make inclusions finer. La, Y and Al are more effective than Ce for obtaining finely distributed inclusions. 展开更多
关键词 rare earth element oxides liquid iron size distribution
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Effects of Rare Earth Oxides on Viscosity,Thermal Expansion,and Structure of Alkali-Free Boro-Aluminosilicate Glass 被引量:2
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作者 侯延升 YUAN Jian +3 位作者 康俊峰 CUI Jingjing CHENG Jinshu CUI Jing 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2017年第1期58-62,共5页
Effects of rare earth oxides(Y2O3,La2O3,and Er2O3) on the viscosity,thermal expansion,and structure of alkali-free boro-aluminosilicate glasses were investigated by the rotating crucible viscometer,dilatometry and F... Effects of rare earth oxides(Y2O3,La2O3,and Er2O3) on the viscosity,thermal expansion,and structure of alkali-free boro-aluminosilicate glasses were investigated by the rotating crucible viscometer,dilatometry and FT-IR absorption spectra.The results showed that the melting temperature of alkali-free boroaluminosilicate glasses decreased from 1 697.55 to 1 662.59,1 674.37 and 1 640.87 ℃ with the introduction of 1 mol%La2O3,Y2O3 and Er2O3,respectively.However,the glass transition temperature Tg,dilatometric softening temperature T_d and coefficient of thermal expansion of alkali-free boro-aluminosilicate glasses increased when adding the rare-earth oxides.At high temperatures,incorporating rare earth oxides into glass resulted in the peak at about 1 085 cm^-1 towards lower wavenumber and the absorption band in the region of 850-1 260 cm^-1 broader,which indicated that rare earths acted as network modifiers and increased the numbers of non-bridging oxygen in the glass melts.However,the rare earths had an opposite effect and accumulated the glass structure at low temperatures near Tg. 展开更多
关键词 VISCOSITY STRUCTURE boro-aluminosilicate rare earth oxides
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Effects of various rare earth oxides on morphology and size of oxide dispersion strengthening(ODS)-W and ODS-Mo alloy powders 被引量:3
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作者 He ZHANG Zhi-bo LI +3 位作者 Xiao-chun DENG Ben CHEN Guo-hua ZHANG Kuo-Chih CHOU 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2022年第8期2665-2680,共16页
Ultrafine oxide dispersion strengthening(ODS)-Mo and ODS-W alloy powders containing different types of oxide nanoparticles were successfully synthesized by spraying method(solid−liquid mixing method)combined with the ... Ultrafine oxide dispersion strengthening(ODS)-Mo and ODS-W alloy powders containing different types of oxide nanoparticles were successfully synthesized by spraying method(solid−liquid mixing method)combined with the reductions with carbon black and hydrogen in sequence.It is concluded that the solution concentration and type of rare earth oxide have no effect on the grain size of ODS-Mo alloy powder,but have obvious effect on that of ODS-W alloy powder.The higher the concentration of rare earth solution is,the smaller the average grain size of ODS-W alloy powder is.Furthermore,compared with doping with CeO_(2),the grain sizes of reduction products of La_(2)O_(3) and Y_(2)O_(3) doped WO_(3) are relatively larger.Compared with the undoped case,there is almost no change for grain size of ODS-Mo alloy powder,while the grain size of ODS-W alloy powder becomes much larger.This is probably due to the appearance of the composite oxide(such as La_(2)WO_(6))formed by the reaction between tungsten oxide and rare earth oxides,which promotes the heterogeneous nucleation and growth of tungsten grains during the reduction process of ODS-W,while there is no complex oxide composed of molybdenum and rare earth oxides in the reduction process of ODS-Mo. 展开更多
关键词 grain size rare earth oxide oxide dispersion strengthened alloy W MO
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Application of Rare Earth Oxides in Diesel Exhaust Purification Catalysts 被引量:1
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作者 Zhang Zhaoliang Yu Pengfei Wang Shilong Li Chunfeng Dai Hua 《Journal of Rare Earths》 SCIE EI CAS CSCD 2004年第z1期194-196,共3页
Diesel oxide catalysts and soot combustion catalysts were reported in this paper.The former was manufactured in mass last year, and enhanced performance is under development now.The later is screened out and further r... Diesel oxide catalysts and soot combustion catalysts were reported in this paper.The former was manufactured in mass last year, and enhanced performance is under development now.The later is screened out and further research is under way.The best soot combustion catalyst could ignite soot combustion even at 350 ℃, which is within the range of temperatures reached in diesel exhaust, and shows the catalytic combustion velocity nearly one time faster compared with non-catalytic combustion of soot, which is of benefit to rapid regeneration of diesel particulate filter, thus it might be an excellent practicable catalyst. 展开更多
关键词 DIESEL oxidATION CATALYST SOOT combustion CATALYST PEROVSKITE rare earths
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Electronic and Optical Properties of Rare Earth Oxides: <i>Ab Initio</i>Calculation 被引量:1
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作者 Sezen Horoz Sevket Simsek +1 位作者 Selami Palaz Amirullah M. Mamedov 《World Journal of Condensed Matter Physics》 2015年第2期78-85,共8页
In this work, we have investigated the electronic and optical properties of the technologically important rare earth oxide compounds—X2O3 (X: Gd, Tb) using the density functional theory within the GGA. The band struc... In this work, we have investigated the electronic and optical properties of the technologically important rare earth oxide compounds—X2O3 (X: Gd, Tb) using the density functional theory within the GGA. The band structure of X2O3 have been calculated along high symmetry directions in the first brillouin zone. The real and imaginary parts of dilectric functions and the other optical responses such as energy-loss function, the effective number of valence electrons and the effective optical dielectric constants of the rare earth sesquioxides (Gd2O3 and Tb2O3) were calculated. 展开更多
关键词 rare earth oxides Ab INITIO CALCULATION Electronic Structure Optical Properties
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Blue-Light Emission from Undoped and Rare Earth-Doped Wide Bandgap Oxides
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作者 郝建华 何国庚 +1 位作者 黄雄武 吴锐 《Journal of Rare Earths》 SCIE EI CAS CSCD 2006年第6期728-731,共4页
Rare earth-doped oxide thin-film phosphors may emerge as an alternate choice for the blue phosphor, due to their chemical and thermal stability in high vacuum and absence of corrosive gas emission under electron bomba... Rare earth-doped oxide thin-film phosphors may emerge as an alternate choice for the blue phosphor, due to their chemical and thermal stability in high vacuum and absence of corrosive gas emission under electron bombardment. The blue phosphors in this study were activated in air at temperatures suitable for glass substrates, which have been used in a number of applications. The effects of rare earth ions and oxide hosts on the blue-light-emitting properties of phosphors are discussed. In addition, novel blue-light emission was observed in certain typical undoped wide bandgap oxides. The luminescence of the oxides depends on the growth and annealing conditions under different atmospheres, suggesting that it is associated with the presence of oxygen vacancies. Radiative processes related to oxygen vacancies were also presented. 展开更多
关键词 wide bandgap LUMINESCENCE rare earths oxidE blue light rare earths
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Oxides Catalysts of Rare Earth and Transient Metal for Catalytic Oxidation of Benzene
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作者 Liang Kun Li Rong Chen Jianjun Ma Jiantai 《Journal of Rare Earths》 SCIE EI CAS CSCD 2004年第z1期191-193,共3页
The catalysts of CeO2 and the mixture of CeO2 and CuO were prepared, and the activities of these catalysts for completely oxidizing benzene were studied.The results show that the optimal proportion of CeO2/CuO is 6: 4... The catalysts of CeO2 and the mixture of CeO2 and CuO were prepared, and the activities of these catalysts for completely oxidizing benzene were studied.The results show that the optimal proportion of CeO2/CuO is 6: 4.The highest temperature at which benzene was completely oxidized on these catalysts at different airspeed was measured.Compared these catalysts with the noble metal used, our catalysts had superiority in the resources and the industrial cost besides good activities. 展开更多
关键词 oxides CATALYSTS of rare earth BENZENE complete oxidation rare earths
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Status of Research on Application of High Purity Rare Earth Oxides in Solid Oxide Fuel Cells
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作者 Ma Zhihong Qiu Jufeng 《Journal of Rare Earths》 SCIE EI CAS CSCD 2004年第z1期287-294,共8页
The solid oxide fuel cell (SOFC) is a high-efficient and environmentally friendly power generation system.The rare earth oxide materials are used extensively in the manufacturing of SOFC components.In particular, the ... The solid oxide fuel cell (SOFC) is a high-efficient and environmentally friendly power generation system.The rare earth oxide materials are used extensively in the manufacturing of SOFC components.In particular, the CeO2doped with Gd2O3 or Sm2O3, lanthanide perovskite oxides are indispensable and key materials for developing the intermediate temperature SOFC.The research and development status of application of high purity rare earth oxides in SOFC was overviewed.The rare earth oxide-based and -doped materials were discussed for the SOFC components.Concerning the rare earth oxides applicable to SOFC, several topics were also pointed out for further researching and developing. 展开更多
关键词 INORGANIC MATERIALS CHEMISTRY oxidE CERAMICS solid oxidE fuel cell component MATERIALS rare earths
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Studies on Gas Sensitive Materials of γ-Fe_2O_3 Doped with Rare Earth Oxides
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作者 徐甲强 曾桓兴 +1 位作者 沈瑜生 王弘 《Journal of Rare Earths》 SCIE EI CAS CSCD 1992年第2期125-129,共5页
Fine powders of γ-Fe_2O_3,doped with Y_2O_3,CeO_2,Eu_2O_3 or Tb_2O_3 have been prepared by the chemical co-precipitation method.The sensitivity of gas sensation has been measured with respect to the relative resist- ... Fine powders of γ-Fe_2O_3,doped with Y_2O_3,CeO_2,Eu_2O_3 or Tb_2O_3 have been prepared by the chemical co-precipitation method.The sensitivity of gas sensation has been measured with respect to the relative resist- ance change in the ceramic matrix upon introduction of inflammable gases.The structure of the materials has been studied with X-ray diffraction spectroscopy(XRD),electron diffraction spectroscopy( ED) and transmis- sion electron microscopy(TEM).The addition of rare earth oxides,which improves ceramic microstructure of γ-Fe_2O_3,improves gas sensitivity of γ-Fe_2O_3.The stability can be increased because of the increase of phase transition temperature.In addition,the selectivity of gas sensation of γ-Fe_2O_3 can be improved because of the variation of rare earth oxides. 展开更多
关键词 Gamma hematite(γ-Fe_2O_3) Ceramic microstructure rare earth oxides Gas sensitive materials
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Electron Donating Property and Catalytic Activity ofPerovskite-type Mixed Oxides (ABO_3) Consisting of Rare Earth and 3d Transition Metals
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作者 S.Sugunant and V.Meera(Dept. of Applied Chemistry, Cochin University of Science and Technology, Kochi-682022, India) 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 1995年第3期229-231,共3页
The catalytic activity of Perovskite-type mixed oxides (LaCoO3, PrCoO3 and SmCoO3) for the reduction of cyclohexanone to cyclohexanol with 2-propanol (Meerwein-PonndorfVerley reduction) has been studied. The data have... The catalytic activity of Perovskite-type mixed oxides (LaCoO3, PrCoO3 and SmCoO3) for the reduction of cyclohexanone to cyclohexanol with 2-propanol (Meerwein-PonndorfVerley reduction) has been studied. The data have been correlated with the surface electron donor properties of these mixed oxides 展开更多
关键词 Activity type ABO3 Consisting of rare earth and 3d Transition Metals Electron Donating Property and Catalytic Activity ofPerovskite-type Mixed oxides
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SPECTRAL VARIATION AND CHARACTERISTICS OF LOW VALENCY RARE EARTH IONS IN COMPLEX OXIDESⅢ.EFFECT OF THE CRYSTAL ENVIRONMENT AND CHEMICAL FACTORS ON LUMINESCENCE PROPERTIES OF EUROPIUM (Ⅱ) ION
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作者 孙家跃 石春山 李有谟 《Journal of Rare Earths》 SCIE EI CAS CSCD 1990年第2期110-116,共7页
In this paper,the influence of crystal-field on the Luminescence properties of Eu^(2+) in complex oxides are studied theoretically by using purely electrostatic model,the dependence of the 4f^65d levels on Eu-O bond d... In this paper,the influence of crystal-field on the Luminescence properties of Eu^(2+) in complex oxides are studied theoretically by using purely electrostatic model,the dependence of the 4f^65d levels on Eu-O bond distance is given.Quantum chemistry calculation shows that the splitting extent of 4f^65d energy band in cubic or in octahedral fields will be inversely proportional to R^5,where R is the distance of Eu^(2+) to oxygen ligand.The value of R affects slightly the location of the centre of 4f^65d energy band.According to the exper- imental spectrum data,we have discussed the influence of the host chemical composition,the replaced sites of Eu^(2+) and degree of covalency of Eu-O bond on luminescence properties of Eu^(2+).Some regularity of fluorescence spectrum was observed. In alkali-alkaline earth-phosphates,the splitting extent of 4f^65d band (△E) becomes smaller as the Eu-O bond distance (R) increases.In Na_(3-x)(PO_4)_(1-x)(SO_4)_x and Na_(2-x)CaSi_(1-x)P_xO_4 hosts,d-d emission peak of Eu^(2+) will shift to shorter wavelength with the increase of x's value. The crystal structure data show that Eu^(2+) in K_2Mg_2(SO_4)_3 is affected more strongly by crystal-field and covalancy than in KMgF_3,so K_2Mg_2(SO_4)_3:Eu^(2+) emits blue light (E_(em)~m=400nm) and KMgF_3:Eu^(2+) produces ultraviolet fluorescence. 展开更多
关键词 Eu SPECTRAL VARIATION AND CHARACTERISTICS OF LOW VALENCY rare earth IONS IN COMPLEX oxides EFFECT OF THE CRYSTAL ENVIRONMENT AND CHEMICAL FACTORS ON LUMINESCENCE PROPERTIES OF EUROPIUM ION
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Synthesis and X-Ray Diffraction Study of All Rare-Earth Series Oxides REE_2Ti_2O_7
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作者 LI Guowu XIONG Ming HU Meinan 《矿物学报》 CAS CSCD 北大核心 2013年第S1期44-44,共1页
The pyrochlore supergroup natural minerals are the oxides for formula A2-xB2O7. In this formula, A typically is Ca, Na, TR, Ba, Fe and Mn cation. B is Ta, Ti, Nb, W, Sb. The pyrochlore supergroup is divided into five ... The pyrochlore supergroup natural minerals are the oxides for formula A2-xB2O7. In this formula, A typically is Ca, Na, TR, Ba, Fe and Mn cation. B is Ta, Ti, Nb, W, Sb. The pyrochlore supergroup is divided into five groups basis of the atomic proportions of the B-site atoms Nb, Ta, Sb, Ti, and W. They are pyrochlore, microlite, roméite, betafite, and elsmoreite, respectively. Some of these minerals containing rare-earth elements species or synthetic oxides have important applications in materials, as for optical materials, light catalyst materials, magnetoelectric materials and radioactive waste treatment etc. 展开更多
关键词 PYROCHLORE betafite rare-earth oxides SYNTHESIS crystal chemistry.
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Mechanism of effect of rare earth oxides on high temperature corrosion resistance of weld metal
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作者 李志勇 王宝 张汉谦 《中国有色金属学会会刊:英文版》 CSCD 2006年第A02期328-331,共4页
关键词 焊接金属 稀土氧化物 高温腐蚀 耐蚀性 焊接电弧
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High Performance Silicon Nitride-based Composite Materials with Rare-earth Oxides Additives
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作者 黄莉萍 《High Technology Letters》 EI CAS 1996年第2期72-75,共4页
In the present paper,a silicon nitride-based composite processed with rare-earth oxidesadditives is presented.Its bend strength can be maintained at a value as high as 1000 MPafrom 1000 to 1370℃ and the fracture toug... In the present paper,a silicon nitride-based composite processed with rare-earth oxidesadditives is presented.Its bend strength can be maintained at a value as high as 1000 MPafrom 1000 to 1370℃ and the fracture toughness measures 9-10 MPa·m<sup>1/2</sup>.The static fa-tigue behavior at 1370℃ of this material is also encouraging.Besides,two another α′/β′sialon composites doped with rare-earth oxides are also described.The effects of processingparameters on the microstructure and the properties of the materials are discussed in somedetails. 展开更多
关键词 Silicon NITRIDE Composite rare-earth oxidE SIALON Static fatigue
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Effect of Rare Earth Oxides on Catalysts Mo-Te System
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作者 贺仁近 江洪波 +1 位作者 钟邦克 王祥珍 《Journal of Rare Earths》 SCIE EI CAS CSCD 1991年第2期116-120,共5页
Surface compositions,structures,and acidities of the Mo-Te-Fe-Ni catalysts added with La_2O_3,CeO_2, Pr_6O_(12),Nd_2O_3 and Sm_2O_3 were measured and related with the activities of the catalysts for selective oxidatio... Surface compositions,structures,and acidities of the Mo-Te-Fe-Ni catalysts added with La_2O_3,CeO_2, Pr_6O_(12),Nd_2O_3 and Sm_2O_3 were measured and related with the activities of the catalysts for selective oxidation of olefins.It was found that adding rare earth elements to the Mo-Te catalysts increases obviously their selectivities to methacrolein(MAL),and the yield percentage of MAL changes periodically with the increase of atomic numbers of rare earth elements added,and the highest yield was obtained with the catalyst containing CeO_2.The addition of CeO_2 to 9-component Mo-Te catalyst increases not only the activity of the catalyst, but also its thermostability remarkably.The mechanism of rare earth elements in the catalysts was discussed. 展开更多
关键词 Mo-Te catalysts rare earth oxides oxidATION ISOBUTENE Methacroiein
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Rare earth alloy nanomaterials in electrocatalysis 被引量:1
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作者 Yifei Li Xilin Yuan +5 位作者 Ping Wang Lulin Tang Miao He Pangen Li Jiang Li Zhenxing Li 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2023年第8期574-594,I0014,共22页
With the rapid development of society and economy, the excessive consumption of fossil energy has led to the global energy and environment crisis. In order to explore the sustainable development of new energy, researc... With the rapid development of society and economy, the excessive consumption of fossil energy has led to the global energy and environment crisis. In order to explore the sustainable development of new energy, research based on electrocatalysis has attracted extensive attention in the academic circle. The main challenge in this field is to develop nano-catalysts with excellent electrocatalytic activity and selectivity for target products. The state of the active site in catalyst plays a decisive role in the activity and selectivity of the reaction. In order to design efficient and excellent catalysts, it is an effective means to adjust the electronic structure of catalysts. Electronic effects are also called ligand effects. By alloying with rare earth(RE) elements, electrons can be redistributed between RE elements and transition metal elements, achieving accurate design of the electronic structure of the active site in the alloy. Because of the unique electronic structure of RE, it has been paid attention in the field of catalysis. The outermost shell structure of RE elements is basically the same as that of the lower shell, except that the number of electrons in the 4f orbital is different, but the energy level is similar, so their properties are very similar. When RE elements form compounds, both the f electrons in the outermost shell and the d electrons in the lower outer shell can participate in bonding. In addition, part of the 4f electrons in the third outer shell can also participate in bonding.In order to improve the performance of metal catalysts, alloying provides an effective method to design advanced functional materials. RE alloys can integrate the unique electronic structure and catalytic behavior of RE elements into metal materials, which not only provides an opportunity to adjust the electronic structure and catalytic activity of the active component, but also enhances the structural stability of the alloy and is expected to significantly improve the catalytic performance of the catalyst. From the perspective of electronic and catalytic activity, RE elements have unique electronic configuration and lanthanide shrinkage effect. Alloying with RE elements will make the alloy have more abundant electronic structure, activity, and spatial arrangement, effectively adjusting the reaction kinetics of the electrochemical process of the catalyst. In this paper, the composition,structure, synthesis of RE alloys and their applications in the field of electrocatalysis are summarized, including the hydrogen evolution reaction, the oxygen evolution reaction, the oxygen reduction reaction, the methanol oxidation reaction, the ethanol oxidation reaction, and other catalytic reactions. At the same time, the present challenges of RE alloy electrocatalytic materials are summarized and their future development direction is pointed out. In the field of electrocatalysis, the cost of catalyst is too high and the stability is not strong. Therefore, the testing process should be related to the actual application, and the test method should be standardized, so as to carry forward the field of electrocatalysis. 展开更多
关键词 rare earth Alloy nanomaterials ELECTROCATALYSIS Preparation methods Hydrogen evolution reaction Oxygen reduction reaction Methanol oxidation reaction Ethanol oxidation reaction
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Laser cladding in-situ carbide particle reinforced Fe-based composite coatings with rare earth oxide addition 被引量:21
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作者 吴朝锋 马明星 +3 位作者 刘文今 钟敏霖 张红军 张伟明 《Journal of Rare Earths》 SCIE EI CAS CSCD 2009年第6期997-1002,共6页
Particulate reinforced metal matrix composite(PR-MMC) has excellent properties such as good wear resistance,corrosion resistance and high temperature properties.Laser cladding is usually used to form PR-MMC on metal s... Particulate reinforced metal matrix composite(PR-MMC) has excellent properties such as good wear resistance,corrosion resistance and high temperature properties.Laser cladding is usually used to form PR-MMC on metal surface with various volume fractions of ceramic particles.Recent literatures showed that laser melting of powder mixture containing carbon and carbide-forming elements,was favorable for the formation of in-situ synthesized carbide particles.In this paper,rare earth oxide(RE2O3) was added into t... 展开更多
关键词 laser cladding particle reinforced rare earth oxide nucleation rare earth carbide
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