Microcracks in nuclear graphite and highly oriented pyrolytic graphite (HOPG)

被引：78

作者：

Wen, Keyun ^{[1
]}

Marrow, James ^{[1
]}

Marsden, Barry ^{[1
]}

机构：

[1] Univ Manchester, Mat Performance Ctr, Manchester M1 7HS, Lancs, England

来源：

JOURNAL OF NUCLEAR MATERIALS | 2008年 / 381卷 / 1-2期

基金：

英国工程与自然科学研究理事会;

关键词：

D O I：

10.1016/j.jnucmat.2008.07.012

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Microcracks with varied length and width are observed in nuclear grade graphite and highly oriented pyrolytic graphite (HOPG) by transmission electron microscopy. In situ observations show that these cracks tend to close up on heating the sample. The crystal dimensional change from in situ electron-irradiation also causes the closure of the cracks. Although some of the cracks may be identifiable as accommodation porosity (i.e. Mrozowski cracks), others appear to have already formed prior to carbonization and graphitization. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：199 / 203

页数：5

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