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NiB/Al_2O_3非晶态合金催化剂抗硫性能研究 被引量:6
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作者 张荣斌 李凤仪 石秋杰 《江西科学》 2002年第2期71-74,共4页
采用化学还原法制备了非晶态NiB合金及负载型非晶态NiB/Al2 O3合金 ,用浸渍法制备了Ni/Al2 O3催化剂。用ICP、BET、TPD及氢吸附等方法对催化剂进行了表征。以苯加氢为探针反应 ,以CS2 为毒物 ,对各催化剂的催化活性和抗硫性能进行了比... 采用化学还原法制备了非晶态NiB合金及负载型非晶态NiB/Al2 O3合金 ,用浸渍法制备了Ni/Al2 O3催化剂。用ICP、BET、TPD及氢吸附等方法对催化剂进行了表征。以苯加氢为探针反应 ,以CS2 为毒物 ,对各催化剂的催化活性和抗硫性能进行了比较。研究结果表明 ,非晶态合金由于有更高的活性镍面积而表现出更高的催化活性及抗硫性能 ,载体能改善非晶态合金的性能 ,并对毒物有一定的吸附作用。在非晶态合金表面有三种中心 ,CS2 优先中毒高温吸附中心。 展开更多
关键词 NIB AL2O3 非态合金 催化剂 抗硫性能 苯加氢
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镍-硼非晶态合金催化剂的ESR与DSC研究 被引量:2
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作者 张菊 郑小明 王立 《Chinese Journal of Catalysis》 SCIE CAS CSCD 北大核心 1995年第5期403-405,共3页
镍-硼非晶态合金催化剂的ESR与DSC研究张菊,郑小明(杭州大学催化研究所,杭州310028)王立(浙江大学高分子科学与工程学系,杭州310027)关键词非晶态,镍-硼合金,电子自族共振,示差扫描量热法非晶态合金是一... 镍-硼非晶态合金催化剂的ESR与DSC研究张菊,郑小明(杭州大学催化研究所,杭州310028)王立(浙江大学高分子科学与工程学系,杭州310027)关键词非晶态,镍-硼合金,电子自族共振,示差扫描量热法非晶态合金是一种新型的催化材料.用化学法制得的非... 展开更多
关键词 合金 ESR DSC 催化剂
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非晶态Ni-Si-B系合金在FeCl_3溶液中的腐蚀行为 被引量:1
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作者 余丽萍 李基永 刘让苏 《材料科学与工艺》 EI CAS CSCD 1999年第3期58-60,共3页
用失重法研究了几种NiSiB系合金在FeCl3 溶液中的腐蚀行为. 分别考查了腐蚀速率与材料组分、表面状态,溶液温度、浓度及pH 值的关系. 结果表明:随着Ni 含量增加,表面状态越粗糙,溶液浓度增加,温度升高,pH ... 用失重法研究了几种NiSiB系合金在FeCl3 溶液中的腐蚀行为. 分别考查了腐蚀速率与材料组分、表面状态,溶液温度、浓度及pH 值的关系. 结果表明:随着Ni 含量增加,表面状态越粗糙,溶液浓度增加,温度升高,pH 值降低,均将使腐蚀速率增加. 展开更多
关键词 合金 腐蚀 失重法 合金 三氯化铁
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几种非晶态Ni-B合金催化剂的物化和催化性能比较 被引量:3
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作者 胡长员 李凤仪 +1 位作者 张荣斌 华丽 《南昌大学学报(理科版)》 CAS 北大核心 2006年第6期564-568,573,共6页
用化学还原法制备非晶态N i-B合金和浸渍-化学还原法制备非晶态N i-B/A l2O3、N i-B/S iO2、N i-B/CNTs合金,研究了催化剂的乙炔选择加氢性能,并运用TEM、ICP、XPS、H2-TPD、CO化学吸附法对非晶态合金催化剂进行表征。结果表明,A l2O3、... 用化学还原法制备非晶态N i-B合金和浸渍-化学还原法制备非晶态N i-B/A l2O3、N i-B/S iO2、N i-B/CNTs合金,研究了催化剂的乙炔选择加氢性能,并运用TEM、ICP、XPS、H2-TPD、CO化学吸附法对非晶态合金催化剂进行表征。结果表明,A l2O3、S iO2、CNTs载体不同程度促进了N i-B合金的分散,提高了催化剂的活性镍表面积,其中以CNTs的效果最为突出。平均径粒为10 nm左右的N i-B粒子在CNTs表面均匀分散,使活性镍的表面积达30.6 m2/g,提高了氢的吸附量。此外,CNTs向非晶态N i-B合金中的N i转移电子,形成富电子的N i。N i-B/CNTs催化剂具有最好的乙炔加氢活性,N i-B催化剂乙烯选择性最差。 展开更多
关键词 Ni—B合金 负载 碳纳米管 乙炔选择加氢
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非晶态合金传感器
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作者 何圣静 《物理通报》 1989年第11期4-6,共3页
关键词 合金 传感器
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CoP非晶合金催化分解磷化氢制高纯磷的研究 被引量:3
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作者 梁培玉 韩长秀 +1 位作者 林徐明 张宝贵 《南开大学学报(自然科学版)》 CAS CSCD 北大核心 2006年第4期20-23,共4页
以次磷酸钠为还原剂、柠檬酸钠为配体,用化学还原法制备CoP非晶态合金.利用Co-P非晶态合金来催化分解磷化氢制备半导体级高纯黄磷,可以使磷化氢的实际分解温度从800~1000C降低到约470℃.得到的黄磷纯度为99.99%,磷化氢的实际分... 以次磷酸钠为还原剂、柠檬酸钠为配体,用化学还原法制备CoP非晶态合金.利用Co-P非晶态合金来催化分解磷化氢制备半导体级高纯黄磷,可以使磷化氢的实际分解温度从800~1000C降低到约470℃.得到的黄磷纯度为99.99%,磷化氢的实际分解率99.80%;黄磷中砷含量降至3μg/g以下,可以作为优质黄磷使用. 展开更多
关键词 Co-P合金 磷化氢 高纯磷
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纳米晶Fe-Si-B-Nb-Cu合金棒的软磁性能
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作者 玉燕 《金属功能材料》 CAS 2003年第2期42-42,共1页
关键词 铸造合金 纳米晶 Fe-Si-B-Nb-Cu合金 软磁性能
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新型超高强结构材料 被引量:1
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作者 宋广生 曾松岩 +1 位作者 蒋祖龄 李庆春 《宇航材料工艺》 CAS CSCD 北大核心 1994年第4期5-10,共6页
液淬非晶铝基Al-Ln-M系合金(Ln为稀土元素,M为过渡元素)不但塑性好而且还具有980MPa以上的拉伸断裂强度。最新研究表明,该系非晶铝基合金的拉伸断裂强度高达1560MPa。本文综述超高强非晶铝基合金的开发历程... 液淬非晶铝基Al-Ln-M系合金(Ln为稀土元素,M为过渡元素)不但塑性好而且还具有980MPa以上的拉伸断裂强度。最新研究表明,该系非晶铝基合金的拉伸断裂强度高达1560MPa。本文综述超高强非晶铝基合金的开发历程,成分组成,制备工艺,晶化温度和力学性能,拟为国内研究开发这类新型结构材料提供线索。 展开更多
关键词 合金 晶铝基合金 淬火 超高强度
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Electrochemical hydrogen storage properties of non-equilibrium Ti_(2-x)Mg_xNi alloys 被引量:1
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作者 李佳佳 周俊凤 +3 位作者 赵相玉 杨猛 马立群 沈晓冬 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2015年第11期3729-3735,共7页
Amorphous Ti2?xMgxNi (x=0?0.3) alloys were prepared by mechanical milling of elemental powders. Charge and discharge test, linear polarization (LP) and potential-step measurement were carried out to investigate the el... Amorphous Ti2?xMgxNi (x=0?0.3) alloys were prepared by mechanical milling of elemental powders. Charge and discharge test, linear polarization (LP) and potential-step measurement were carried out to investigate the electrochemical hydrogen storage properties of the alloys before and after heat treatment. The results show that the maximum discharge capacity of heat-treated Ti2?xMgxNi alloy can reach 275.3 mA·h/g, which is 100 mA·h/g higher than that of the amorphous Ti2?xMgxNi alloy. The heat-treated Ti1.9Mg0.1Ni alloy presents the best cycling stability with a high discharge capacity of 210 mA·h/g after 30 cycles. The results of LP and potential-step measurement of the Ti1.9Mg0.1Ni alloy show that the exchange current density increases from 101.1 to 203.3 mA/g and the hydrogen diffusion coefficient increases from 3.20×10?11 to 2.70×10?10 cm2/s after the heat treatment, indicating that the heat treatment facilitates both the charge-transfer and hydrogen diffusion processes, resulting in an improvement in electrochemical hydrogen storage properties of Ti2?xMgxNi (x=0?0.3) alloys. 展开更多
关键词 Ti2-xMgxNi alloy AMORPHOUS heat treatment exchange current density hydrogen diffusion coefficient
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Promoting Effects of Pt on the Catalytic Performance of Supported NiB Amorphous Alloy Catalysts for Benzene Hydrogenation 被引量:6
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作者 SONG Hua WU Xianchun +1 位作者 WANG Huaiyuan LI Feng 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2011年第4期698-702,共5页
A support(denoted AM) was prepared using pseudo-boehmite and mordenite.Ni-B and NiPtB amorphous catalysts were prepared on the support by the impregnation method followed by chemical reduction with a KBH4 solution.And... A support(denoted AM) was prepared using pseudo-boehmite and mordenite.Ni-B and NiPtB amorphous catalysts were prepared on the support by the impregnation method followed by chemical reduction with a KBH4 solution.And the catalysts were characterized by X-ray diffraction(XRD),environment scanning electron microscope(ESEM),inductively coupled plasma(ICP),H2-temperature programmed reduction(H2-TPR),differential thermal analysis(DTA),and BET.Benzene hydrogenation was used as a probe reaction to evaluate the effect of addition of small quantities of Pt on the NiB/AM catalyst.The results show that Pt can promote the reduction of NiO and the formation of active sites,leading to smaller catalyst particles and better dispersion of active metal particles on the support.The catalytic activity,sulfur resistance and thermal stability were remarkably improved by Pt doping of the NiB/AM catalyst. 展开更多
关键词 NiB amorphous alloy benzene hydrogenation Pt doping sulfur resistance
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Hydrotalcite-wrapped Co–B alloy with enhanced oxygen evolution activity 被引量:2
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作者 Xue Leng Kuang‐Hsu Wu +3 位作者 Bing‐Jian Su Ling‐Yun Jang Ian R. Gentle Da‐Wei Wang 《Chinese Journal of Catalysis》 CSCD 北大核心 2017年第6期1021-1027,共7页
Water oxidation is one of the most attractive techniques for intermittent renewable energy conversion and storage.The oxygen evolution electrocatalytic performance of an amorphous Co-B alloy and its derivatives were s... Water oxidation is one of the most attractive techniques for intermittent renewable energy conversion and storage.The oxygen evolution electrocatalytic performance of an amorphous Co-B alloy and its derivatives were studied.These materials were chemically synthesized by reducing a Co salt with NaBH4.The amorphous Co-B alloy showed good electrocatalytic activity in oxygen evolution but its stability was poor.A hydrotalcite‐wrapped Co-B alloy was synthesized by mild oxidation.The electrocatalytic activity of this material in the oxygen evolution reaction was better than that of a commercially available Ir/C catalyst. 展开更多
关键词 Amorphous alloy Oxygen evolution reaction ELECTROCATALYST
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Bulk Glassy Alloys: Historical Development and Current Research 被引量:9
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作者 Akihisa Inoue 《Engineering》 SCIE EI 2015年第2期185-191,共7页
This paper reviews the development of current research in bulk glassy alloys by focusing on the trigger point for the synthesis of the first bulk glassy alloys by the conventional mold casting method. This review cove... This paper reviews the development of current research in bulk glassy alloys by focusing on the trigger point for the synthesis of the first bulk glassy alloys by the conventional mold casting method. This review covers the background, discovery, characteristics, and applications of bulk glassy alloys, as well as recent topics regarding them. Applications of bulk glassy alloys have been expanding, particularly for Fe-based bulk glassy alloys, due to their unique properties, high glass-forming ability, and low cost. In the near future, the engineering importance of bulk glassy alloys is expected to increase steadily, and continuous interest in these novel metallic materials for basic science research is anticipated. 展开更多
关键词 bulk glassy alloys mold casting metallic materials structural relaxation
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Effect of Si and Ti on dynamic recrystallization of high-performance Cu-15Ni-8Sn alloy during hot deformation 被引量:13
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作者 Chao ZHAO Zhi WANG +5 位作者 De-qing PAN Dao-xi LI Zong-qiang LUO Da-tong ZHANG Chao YANG Wei-wen ZHANG 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2019年第12期2556-2565,共10页
Effect of Si and Ti on dynamic recrystallization(DRX)of Cu-15Ni-8 Sn alloy was studied using hot compression tests over deformation temperature range of 750-950℃and strain rate range of 0.001-10 s^-1.The results show... Effect of Si and Ti on dynamic recrystallization(DRX)of Cu-15Ni-8 Sn alloy was studied using hot compression tests over deformation temperature range of 750-950℃and strain rate range of 0.001-10 s^-1.The results show that the dynamic recrystallization behavior during hot deformation is significantly affected by the trace elements of Si and Ti.The addition of Si and Ti promotes the formation of Ni16Si7Ti6 particles during hot deformation,which promotes the nucleation of dynamic recrystallization by accelerating the transition from low-angle boundaries(LABs)to high-angle boundaries(HABs).Ni16Si7Ti6 particles further inhibit the growth of recrystallized grains through the pinning effect.Based on the dynamic recrystallization behavior,a processing map of the alloy is built up to obtain the optimal processing parameters.Guided by the processing map,a hot-extruded Cu-15 Ni-8Sn alloy with a fine-grained microstructure is obtained,which shows excellent elongation of 30%and ultimate tensile strength of 910 MPa. 展开更多
关键词 Cu-15Ni-8Sn alloy discontinuous dynamic recrystallization hot compression hot extrusion mechanical properties
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Influence of substituting Ni with Co on hydriding and dehydriding kinetics of melt spun nanocrystalline and amorphous Mg_2Ni-type alloys 被引量:2
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作者 张羊换 赵栋梁 +3 位作者 李保卫 马志鸿 郭世海 王新林 《Journal of Central South University》 SCIE EI CAS 2011年第2期303-309,共7页
In order to improve the hydriding and dehydriding kinetics of the Mg2Ni-type alloys,Ni in the alloy is substituted by element Co. The nanocrystalline and amorphous Mg2Ni-type Mg2Ni1-xCox (x=0,0.1,0.2,0.3,0.4) alloys w... In order to improve the hydriding and dehydriding kinetics of the Mg2Ni-type alloys,Ni in the alloy is substituted by element Co. The nanocrystalline and amorphous Mg2Ni-type Mg2Ni1-xCox (x=0,0.1,0.2,0.3,0.4) alloys were synthesized by melt-spinning technique. The structures of the as-cast and spun alloys were studied with an X-ray diffractometer (XRD) and a high resolution transmission electronic microscope (HRTEM). An investigation on the thermal stability of the as-spun alloys was carried out with a differential scanning calorimeter (DSC). The hydrogen absorption and desorption kinetics of the alloys were measured with an automatically controlled Sieverts apparatus. The results demonstrate that the substitution of Co for Ni does not alter the major phase of Mg2Ni but results in the formation of secondary phase MgCo2. No amorphous phase is detected in the as-spun Co-free alloy,but a certain amount of amorphous phase is clearly found in the as-spun Co-containing alloys. The substitution of Co for Ni exerts a slight influence on the hydriding kinetics of the as-spun alloy. However,it dramatically enhances the dehydriding kinetics of the as-cast and spun alloys. As Co content (x) increases from 0 to 0.4,the hydrogen desorption capacity increases from 0.19% to 1.39% (mass fraction) in 20 min for the as-cast alloy,and from 0.89% to 2.18% (mass fraction) for the as-spun alloy (30 m/s). 展开更多
关键词 Mg2Ni-type alloy MELT-SPINNING substituting NI Co structure HYDRIDING dehydriding KINETICS
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Dynamic indentation response of porous SiC/Ti-based metallic glass composite
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作者 Ben-peng WANG Lu WANG +3 位作者 Yun-fei XUE Yang-wei WANG Hai-feng ZHANG Hua-meng FU 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2016年第12期3154-3160,共7页
Porous SiC/Ti-based metallic glass composite (Ti-BMGC), a new kind of composite, has significant application prospectin the field of light armor. To evaluate the dynamic mechanical response of the composite, dynamic V... Porous SiC/Ti-based metallic glass composite (Ti-BMGC), a new kind of composite, has significant application prospectin the field of light armor. To evaluate the dynamic mechanical response of the composite, dynamic Vickers hardness andindentation-induced deformation behavior were investigated by comparison with that under static indentation. The dynamic hardnesswas measured by a modified split Hopkinson pressure bar (SHPB). The dynamic hardness is obviously greater than the statichardness. The brittleness parameter under dynamic indentation is also greater than that under static indentation. Although thedynamic indentation induced more severe deformation behavior than the static indentation, the deformation and fracturecharacteristics in the two loading cases are nearly the same, both exhibiting extensive cracks in the SiC phase and severe plasticdeformation in the metallic glass phase. 展开更多
关键词 COMPOSITE porous SiC metallic glass dynamic hardness deformation behavior
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A Pd-Fe-B/γ-Al2O3 Amorphous Alloy Catalyst for Hydrogenation of Chloronitrobenzene to Chloroaniline
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作者 Langsong Si Yajuan Zhao Xing Huang Dandan Li Yuxiang Wang 《Journal of Chemistry and Chemical Engineering》 2010年第9期28-33,共6页
A Pd-Fe-B/γ-Al2O3 amorphous alloy catalyst was prepared by impregnation and chemical reduction with borohydrine aqueous solution. The catalyst was characterized by X-ray diffraction(XRD), scanning electron microsc... A Pd-Fe-B/γ-Al2O3 amorphous alloy catalyst was prepared by impregnation and chemical reduction with borohydrine aqueous solution. The catalyst was characterized by X-ray diffraction(XRD), scanning electron microscope(SEM), differential scanning calorimetry(DSC) and elecdes design suite(EDS) and was used for catalytic hydrogenation of 5-nitro-2-chloro-2', 4'-dimethylbenzenesulfonanilide (NCD). The amorphous alloy catalyst shows significantly high activity and selectively for hydrogenation of NCD to 5-Amino-2-chloro- 2', 4'-dimethyibenzenesuifonanilide (ACD). 展开更多
关键词 Amorphous alloy catalytic hydrogenation Pd-Fe-B/γ-Al2O3 supported catalyst.
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Effect of melt spinning on gaseous hydrogen storage characteristics of nanocrystalline and amorphous Nd-added Mg_2Ni-type alloys
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作者 张羊换 袁泽明 +3 位作者 杨泰 祁焱 郭世海 赵栋梁 《Journal of Central South University》 SCIE EI CAS CSCD 2016年第11期2754-2762,共9页
Nanocrystalline and amorphous Mg-Nd-Ni-Cu quaternary alloys with a composition of(Mg_(24)Ni_(10)Cu_2)_(100-x)Nd_x(x=0, 5, 10, 15, 20) were prepared by melt spinning technology and their structures as well as gaseous h... Nanocrystalline and amorphous Mg-Nd-Ni-Cu quaternary alloys with a composition of(Mg_(24)Ni_(10)Cu_2)_(100-x)Nd_x(x=0, 5, 10, 15, 20) were prepared by melt spinning technology and their structures as well as gaseous hydrogen storage characteristics were investigated. The XRD, TEM and SEM linked with EDS detections reveal that the as-spun Nd-free alloy holds an entire nanocrystalline structure but a nanocrystalline and amorphous structure for the as-spun Nd-added alloy, implying that the addition of Nd facilitates the glass forming in the Mg_2Ni-type alloy. Furthermore, the degree of amorphization of the as-spun Nd-added alloy and thermal stability of the amorphous structure clearly increase with the spinning rate rising. The melt spinning ameliorates the hydriding and dehydriding kinetics of the alloys dramatically. Specially, the rising of the spinning rate from 0(the as-cast was defined as the spinning rate of 0 m/s) to 40 m/s brings on the hydrogen absorption saturation ratio(R_5~a)(a ratio of the hydrogen absorption quantity in 5 min to the saturated hydrogen absorption capacity) increasing from 36.9% to 91.5% and the hydrogen desorption ratio(R_(1 0)~d)(a ratio of the hydrogen desorption quantity in 10 min to the saturated hydrogen absorption capacity) rising from 16.4% to 47.7% for the(x=10) alloy, respectively. 展开更多
关键词 Mg2Ni-type alloy Nd addition melt spinning nanocrystalline and amorphous alloy hydrogen storage kinetics
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Development of soft magnetic amorphous alloys with distinctly high Fe content 被引量:1
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作者 PingBo Chen AnDing Wang +5 位作者 ChengLiang Zhao AiNa He Gang Wang ChunTao Chang XinMin Wang Chain-Tsuan Liu 《Science China(Physics,Mechanics & Astronomy)》 SCIE EI CAS CSCD 2017年第10期45-50,共6页
This paper reports on the preparation of Fe82.7-85.7Si2-4.9B9.2-11.2P1.5.2.7C0,8 soft magnetic amorphous alloys with a distinctly high Fe content of 93.5-95.5 wt.% by component design and composition adjustment. All a... This paper reports on the preparation of Fe82.7-85.7Si2-4.9B9.2-11.2P1.5.2.7C0,8 soft magnetic amorphous alloys with a distinctly high Fe content of 93.5-95.5 wt.% by component design and composition adjustment. All alloys can be readily fabricated into completely amorphous ribbon samples with good surface quality by the single copper roller melt-spinning method. These alloys show good bending ductility and excellent magnetic properties after annealing, i.e., low coercivity (He) of 3.3-5.9 A/m, high permeability (μe) of 5000-10000 and high flux saturation density (Bs) of 1.63-1.66 T. The mechanism of the good glass forming ability (GFA)and soft-magnetic properties are explored. The amorphous alloys with the high Fe content comparable to that of the desired high Si alloy can be promising candidates for the potential application in electric devices. 展开更多
关键词 metallic glasses alloy design ANNEALING magnetic properties shear band
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Experimental Study of Isopropanol Dehydrogenation over Amorphous Alloy Raney Nickel Catalysts 被引量:2
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作者 XIN Fang XU Min +1 位作者 LI Xun-Feng HUAI Xiu-Lan 《Journal of Thermal Science》 SCIE EI CAS CSCD 2013年第6期613-618,共6页
The dehydrogenation reaction of isopropanol occurring at low temperature is of great industrial importance. It is a key procedure in isopropanol/acetone/hydrogen chemical heat pump system. An experimental investigatio... The dehydrogenation reaction of isopropanol occurring at low temperature is of great industrial importance. It is a key procedure in isopropanol/acetone/hydrogen chemical heat pump system. An experimental investigation was performed to study the behavior of the liquid phase dehydrogenation of isopropanol over amorphous alloy Raney nickel catalysts. Un-promoted and promoted catalysts were used and their performances were compared under various catalyst amounts, acetone content in the reactant and reaction temperature ranging from 348 K to 355 K.It is found that there exists an optimum catalyst concentration which is about 0.34 g in 300 ml isopropanol. The temperature has evident effect on the reaction. The presence of activities of Fe-promoted catalyst decrease slightly compared to the un-promoted catalyst when the temperature are 348 K and 351 K. Besides, the reaction rate decreases almost linearly with the increase of acetone volume fraction in the reactant. 展开更多
关键词 Chemical heat pump Liquid-phase dehydrogenation ISOPROPANOL
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Oxidation of a Zr_(46)Cu_(46)Al_(7)Gd_(1)bulk metallic glass detected via optical characterizations
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作者 Weijie Xie Mingxing Li +4 位作者 Jiashu Cao Liwei Hu Chao Wang Wei-Hua Wang Yanhui Liu 《Science China Materials》 SCIE EI CAS CSCD 2021年第4期973-978,共6页
Oxidation of metallic glasses has been shown to be different from crystalline alloys due to the disordered atomic structures and far-from-equilibrium state,and quick characterization is required to reveal their early ... Oxidation of metallic glasses has been shown to be different from crystalline alloys due to the disordered atomic structures and far-from-equilibrium state,and quick characterization is required to reveal their early stage oxidation.In this study,we investigated the oxidation behavior of a Zr_(46)Cu_(46)Al_(7)Gd_(1)bulk metallic glass by measuring the changes of optical constants via spectroscopic ellipsometry.Characterizations with X-ray diffraction,scanning electron microscopy,and thermogravimetric analyzer confirmed that the changes of pseudo-optical constants reflected not only the onset temperature at which the alloys underwent obvious oxidation,but also the subtle oxidation which was tedious to characterize.Our study suggests a more efficient and accurate approach to understand the oxidation of metallic glasses with temperature,time and compositions. 展开更多
关键词 metallic glasses spectroscopic ellipsometry OXIDATION
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