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

页码：2019 / 2024

页数：6

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