By FENG Benzheng YANG Deqing Institute of Precious Metals
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Kunming
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650221
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Yunnan
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China.Physics Department
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Yunnan University
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Kunming
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China.To whom correspondence should be addressed.
材料科学技术（英文）
The work functions before and after crystallization of two glassy alloys,Pd_(83.5)Si_(16.5) and Cu_(70)Ti_(30) have been measured by means of the con- tact potential difference method in the secondary electron field at room temperature under 10~(-5) Pa vacuum.The results show that the work functions...
关键词:
work function
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NING Yuantao Institute of Precious Metals
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Kunming
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China Associate Professor
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Institute of Precious Metals
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Kunming
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Yunnan
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China
金属学报(英文版)
A criterion of the metastable extension of solid solubility was proposed.When the eutectic concentration arm ratio parameter of an alloy,J>10,the hypereutectic extension and the metastable solid solubility limit beyond eutectic concentration may be obtained.When J≤10, the hypoeutectic extension m...
关键词:
eutectic system
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NING Yuantao LI Yongnian Kunming Institute of Precious Metals
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Kunmmg
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China Professor
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Kunming Institute of Precious Metals
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Kunming
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Yunnan
,
China
金属学报(英文版)
The internal oxidation behavior of Pd-40Ag-1M(M=Zr,Y)alloy wires has been studied in air at 800—1200℃.The relationship between the internal oxidation depth ξ and the reaction time t can be expressed as ξ= Kt~n,where n=0.5—0.75.The higher the temperature,the larger the value of n is.The active elemen...
关键词:
Pd-40Ag alloy
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NING Yuantao LI Yongnian Kunming Institute of Precious Metals
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China Ning Yuantao
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Professor
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Institute of Precious Metals
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Kunming
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Yunnan
,
China
金属学报(英文版)
The influence of rare-earth elements,La,Ce,Pr,Nd,Sm,Eu,Gd,Dy,Ho,Er and Yb on the thermal stability of PdSi_(16.5) glass was studied systematically by means of DSC.All rare-earth elements,especially heavy ones,increase obviously the thermal stability parameters,including T_θ(T_g ,T_x ,T_g),T_(rg) and...
关键词:
thermal stability
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NING Yuantao ZHOU Xinming DAI Hong Institute of Precious Metals
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Kunming
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Yunnan
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China
金属学报(英文版)
The splat folis of Al-RE(RE=Y,La,Ce,Pr,Nd,Sm,Eu,Gd,Tb,Dy,Er and Yb) binary alloys of 0.04—0.06 mm thickness were made by are-melting and hammer-anvil technique,the.cooling rate is in 10~6 K/s order of magnitude.The metastable extended solid solubilities of these RE elements have been evaluated by me...
关键词:
rapid solidification
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