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材料工程  2013 

C/C复合材料表面硬度对抗氧化性能的影响

DOI: 10.3969/j.issn.1001-4381.2013.10.017, PP. 98-102

Keywords: C/C复合材料,肖氏硬度,防氧化处理

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Abstract:

C/C复合材料使用后由于氧化表面硬度有不同程度的下降。经再次防氧化处理后,测试了表面硬度及抗氧化性能。结果表明氧化后C/C复合材料试样的表面肖氏硬度为HS70时,再次防氧化处理后,其表面硬度增至HS80,在700℃恒温静态氧化条件下,氧化失重率分别为0.44%/15h,1.2%/22h,其抗氧化性能最强。表面硬度为HS40的C/C复合材料试样,距表层1mm深度范围内其硬度均低于基底,再次防氧化处理后其硬度值从HS40增至HS60,其700℃抗氧化性能最差,氧化失重率分别为3.93%/15h,6.52%/22h。

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