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COMPOSITION DEPENDENCE OF EFFECTIVE VACANCY FORMATION ENTHALPY IN COPPER-RICH BRASS AS DEDUCED FROM THRESHOLD TEMPERATURE FOR POSITRON TRAPPING IN VACANCIES

被引：20
作者：
SCHULTZ, PJ
JACKMAN, TE
FABIAN, J
WILLIAMS, EA
MACDONALD, JR
MACKENZIE, IK
机构：
来源：
CANADIAN JOURNAL OF PHYSICS | 1978年 / 56卷 / 08期
关键词：
Compendex;
D O I：
10.1139/p78-140
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The temperature dependence of the Doppler-broadened positron annihilation lineshape has been measured for 13 brass specimens with compositions varying from 0 to 48% by weight of Zn. The vacancy formation enthalpy deduced from these measurements shows a linear decrease of 22% with increasing Zn concentration through the alpha phase and a further 31% decrease on changing from fcc to bcc structure.
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页码：1077 / 1083
页数：7
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