Application of a high magnetic field in the carbonization process to increase the strength of carbon fibers

被引：56

作者：

Sung, MG

Sassa, K

Tagawa, T

Miyata, T

Ogawa, H

Doyama, M

Yamada, S

Asai, S

机构：

[1] Nagoya Univ, Grad Sch Engn, Dept Mat Proc Engn, Chikusa Ku, Nagoya, Aichi 4648603, Japan

[2] Nagoya Univ, Grad Sch Engn, Dept Mat Sci & Engn, Chikusa Ku, Nagoya, Aichi 4648603, Japan

[3] Toho Tenax Co Ltd, Corp & Planning Div, Bunkyo Ku, Tokyo 1130033, Japan

[4] Teikyo Univ Sci & Technol, Dept Sci & Engn, Uenohara, Yamanashi 4090193, Japan

来源：

CARBON | 2002年 / 40卷 / 11期

关键词：

carbon fibers; carbonization; scanning electron microscopy; defects; fracture;

D O I：

10.1016/S0008-6223(02)00059-3

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：

Carbon fibers produced from PAN (polyacrylonitrile) as a precursor are generally subjected to the three heat treatment processes of stabilization and carbonization followed by graphitization. Stabilized fibers were carbonized in a high magnetic field of 5 T imposed parallel to the fiber axis at a temperature of 1445 K and graphitized without a magnetic field at 2273 K. The tensile strength of these treated fibers is increased by 14% in comparison with those of no magnetic treatment. The reason why the imposition of the magnetic field could improve the strength of the fibers has been studied through microscopic observation of the fiber surface as well as a statistical analysis by use of Weibull distributions. (C) 2002 Published by Elsevier Science Ltd.

引用

页码：2013 / 2020

页数：8

共 14 条

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