DEUTERIUM PERMEATION IN POLYCRYSTALLINE NICKEL PREIMPLANTED WITH NICKEL AND HELIUM-IONS

被引：0
|
作者：
SHI, SQ
THOMPSON, DA
SMELTZER, WW
机构：
[1] MCMASTER UNIV,DEPT MAT SCI & ENGN,HAMILTON L8S 4L7,ONTARIO,CANADA
[2] MCMASTER UNIV,DEPT ENGN PHYS,HAMILTON L8S 4L7,ONTARIO,CANADA
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 1992年 / 158卷 / 01期
基金：
加拿大自然科学与工程研究理事会;
关键词：
D O I：
10.1016/0921-5093(92)90136-O
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The interaction between deuterium and irradiation defects in nickel is studied using the gas-phase permeation technique. Irradiation defects were introduced using 90 keV Ni+ ions with fluences of 10(14)-10(17) ions cm-2, or 30 keV He-4+ ions with fluences of 10(15)-5 x 10(16) ions cm-2. Permeation results show that crystalline defects such as dislocation loops produce no measurable effect on deuterium permeation in the temperature range 370-570 K. By comparison, helium defects decrease the apparent diffusivity by four to six orders of magnitude, indicating a strong trapping effect for deuterium. These results are discussed using a simple trapping model.
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页码：71 / 78
页数：8
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