The effect of thermal oxidation on polycrystalline graphite studied by X-ray tomography

被引：46

作者：

Babout, L

Mummery, PM

Marrow, TJ

Tzelepi, A

Withers, PJ

机构：

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

[2] UMIST, Manchester M1 7HS, Lancs, England

[3] Berkeley Ctr, British Nucl Grp, Berkeley GL13 9PB, Glos, England

来源：

CARBON | 2005年 / 43卷 / 04期

基金：

英国工程与自然科学研究理事会;

关键词：

nuclear graphite; oxidation; density; microstructure; thermal conductivity;

D O I：

10.1016/j.carbon.2004.11.002

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The effect of thermal oxidation on PGA graphite samples was investigated by X-ray tomography. This technique allowed an investigation of the evolution of microstructure and local density to be carried out as a function of weight loss. The results show a localised oxidation process which progressively reveals the large coke particles with increasing overall weight loss. The local density measurements arising from the tomographs were used to estimate the weight loss distribution. The reliability of the values were checked by independent thermal conductivity measurements and volume weight loss calculations by immersion technique. (C) 2004 Elsevier Ltd. All rights reserved.

引用

页码：765 / 774

页数：10

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