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Characterisation of wear particles from biomedical carbon/carbon composites with different preforms in hip joint simulator 被引量:4

不同预制体炭/炭复合材料在髋关节模拟试验机中的磨损颗粒表征(英文)
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摘要 A hip joint simulator was employed to predict the clinical wear behaviour of carbon/carbon (C/C) composites with needled carbon cloth preform and carbon felt preform. Wear particles generated from the two kinds of C/C composites were isolated and characterised by the size distribution and morphology. The evolvement of wear particles in the hip joint simulator was proposed. The results show that the wear particles from two kinds of C/C composites have a size ranging from submicron to tens of micrometers. The wear particles have various morphologies including broken fiber, fragment fiber, slice pyrolytic carbon and spherical pyrolytic carbon. C/C composites with needled carbon cloth preforms have larger size range and more broken fiber particles and slice pyrolytic carbon particles in comparison with C/C composites with carbon felt preforms. The evolvement of pyrolytic carbon particles is caused by surface regularization, whereas, the evolvement of carbon fiber particles is related to stress direction in the hip joint simulator. 采用髋关节模拟试验机检测穿刺碳布预制体和碳毡预制体炭/炭复合材料的磨损行为。分离提取产生的磨损颗粒,检测颗粒形貌和尺寸分布并提出颗粒的演化过程。结果表明:炭/炭复合材料磨损颗粒的尺寸分布在亚微米至数十微米之间,颗粒形貌呈现破损纤维状、纤维碎片状、片状和球状。穿刺碳布预制体炭/炭复合材料比碳毡预制体炭/炭复合材料的磨损颗粒尺寸分布范围更广泛,磨损颗粒中的破损碳纤维状和片状形貌较多。热解碳颗粒的演变主要是其表面的规则化过程,而碳纤维颗粒的演变主要与髋关节模拟试验机提供的应力方向有关。
出处 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2012年第10期2562-2568,共7页 中国有色金属学报(英文版)
基金 Projects (50832004, 51202194) supported by National Natural Science Foundation of China Project (11-BZ-2012) supported by the Research Fund of the State Key Laboratory of Solidification Processing (NWPU), China Project (T201107) supported by Shenzhen Key Laboratory of Special Functional Materials, Shenzhen University, China Project (B08040) supported by 111 Project of China
关键词 carbon/carbon composites particle shape BIO-TRIBOLOGY hip joint 炭复合材料 颗粒形状 生物摩擦 髋关节
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