Durability of graphite-fiber-reinforced PMR-15 composites aged at elevated temperatures

被引：0
|
作者：
Bowles, KJ [1 ]
机构：
[1] NASA, Lewis Res Ctr, Div Mat, Polymers Branch, Cleveland, OH 44135 USA
来源：
JOURNAL OF COMPOSITES TECHNOLOGY & RESEARCH | 1999年 / 21卷 / 03期
关键词：
composites; polymer matrix; carbon fiber; durability; compression properties; thermal aging;
D O I：
暂无
中图分类号：
TB33 [复合材料];
学科分类号：
摘要：
Earlier work that reported relationships between compression properties and elevated-temperature aging duration and weight losses also pointed out the apparent influence of surface layer formation and growth on the retention of compression properties during extended aging times. Since that time, further studies have focused on evaluating the growth of the surface layer. The composition and features of this layer were found to change as the aging temperature changed. Microcracks and small voids initiated and advanced inward at all temperatures. Visible oxidation at the surface occurred only at temperatures above 260 degrees C. Relationships between layer thickness, aging time, and temperature were evaluated and empirically formulated. Then, the compression properties were graphically related to the surface layer thickness with excellent correlation.
引用
收藏
页码：127 / 132
页数：6
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