CHEMICALLY DISORDERED NI3AL SYNTHESIZED BY HIGH-VACUUM EVAPORATION

被引：46
|
作者：
HARRIS, SR
PEARSON, DH
GARLAND, CM
FULTZ, B
机构：
[1] Division of Engineering and Applied Science, California Institute of Technology, Pasadena, California, 91125
来源：
JOURNAL OF MATERIALS RESEARCH | 1991年 / 6卷 / 10期
关键词：
D O I：
10.1557/JMR.1991.2019
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Films of chemically disordered fcc Ni3Al were synthesized by the vacuum evaporation of Ni3Al onto room temperature and liquid nitrogen temperature substrates. X-ray diffractometry and transmission electron microscopy showed the material to be single phase with an average grain size of about 4 nm. The formation of the equilibrium L1(2) ordered phase occurred simultaneously with grain growth at temperatures above 350-degrees-C. Differential scanning calorimetry provided ordering enthalpies of 7 kJ/mole and 9 kJ/mole for material evaporated onto room temperature and liquid nitrogen temperature substrates, respectively.
引用
收藏
页码：2019 / 2024
页数：6
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