炭/炭复合材料人工髋关节磨损颗粒研究  

Wear Particles of Carbon/Carbon Composite Artificial Hip Joints

作　　者：张磊磊[1] 胡涛[1,2] 李贺军[1] 卢锦花[1] 沈学涛[1] 曹伟锋[1] 王斌[1] 

机构地区：[1]西北工业大学材料学院,西安710072 [2]第四军医大学西京医院心血管内科,西安710032

出　　处：《无机材料学报》2010年第4期349-353,共5页Journal of Inorganic Materials

基　　金：国家自然科学基金(50972120);"111"工程(B08040)

摘　　要：分离提取了炭/炭复合材料在髋关节模拟试验机中形成的磨损颗粒.采用激光粒度仪考察了磨损颗粒的尺寸分布,借助扫描电镜分析了磨损颗粒的形貌特征,采用三维轮廓仪检测了磨损颗粒的厚度规律.结果表明,炭/炭复合材料磨损颗粒的尺寸分布在0.3~93.9μm之间,其形貌和厚度依据颗粒尺寸呈现规律性的分布,大尺寸（〉30μm）颗粒基本是破损的碳纤维,厚度稳定;中尺寸（3~30μm）颗粒的外形不规则,边界轮廓复杂,厚度分布范围广泛;小尺寸（〈3μm）颗粒呈现圆片形或球形,厚度分布在亚微米级别.同时根据实验结果,揭示了炭/炭复合材料磨损颗粒在磨擦过程中的演变过程.The carbon/carbon composite wear particles generated from a hip joint simulator were separated.The size,morphology and thickness of the particles were tested by laser particle size analyzer,scanning electron microscope and 3-D profiler,respectively.The results show that the particles are 0.3-93.9μm in size and the morphology and the thickness of the particles distributes regularly according to their sizes.The particles whose sizes are larger than 30μm are carbon fibers with a constant thickness.The particles whose thicknesses are in a broad range with medium size（3-30μm） show irregular morphology and complex boundary.The particles whose thicknesses are in the range of sub-micrometers are less than 3μm in size and have a spherical or circular shape.Based on the experimental results,the evolvement of the wear particles in the wear process is explained.

关 键 词：炭/炭复合材料 磨损颗粒 假体 人工髋关节 

分 类 号：TB332[一般工业技术—材料科学与工程]