Reactions of Al-PTFE under Impact and Quasi-Static Compression

被引：22

作者：

Feng, Bin ^{[1
]}

Fang, Xiang ^{[1
]}

Li, Yu-chun ^{[1
]}

Wu, Shuang-zhang ^{[1
]}

Mao, Yi-ming ^{[1
]}

Wang, Huai-xi ^{[1
]}

机构：

[1] PLA Univ Sci & Technol, Coll Field Engn, Nanjing 210007, Jiangsu, Peoples R China

来源：

ADVANCES IN MATERIALS SCIENCE AND ENGINEERING | 2015年 / 2015卷

关键词：

EVOLUTION; FRACTURE;

D O I：

10.1155/2015/582320

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Conventionally, the Al-PTFE is thought to be inert under quasi-static or static loads. However, here we reported an initiation phenomenon of Al-PTFE under quasi-static compression. Quasi-static tests suggest that reacted Al-PTFE samples had much higher toughness than unreacted samples. Dynamic test showed that the energy level needed to initiate the material was similar for quasi-static compression (88-100 J) and dynamic impact (77-91 J). The difference in density indicates that unreacted Al-PTFE has a higher crystallinity, which leads to the lower toughness. SEM images show numerous PTFE fibrils in unreacted composites which made the sample harder to crack and initiate.

引用

页数：6

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