镀Cu短碳纤维增强Cu基复合材料的性能  

Electroless Plating Copper Short Carbon Fiber Reinforced Copper Based Composites

作　　者：朱明明[1] 李卫[2] 

机构地区：[1]暨南大学材料系 [2]暨南大学耐磨材料工程研究中心

出　　处：《特种铸造及有色合金》2013年第5期462-465,共4页Special Casting & Nonferrous Alloys

基　　金：国家-广东联合基金重点资助项目(U1034002)

摘　　要：研究了碳纤维表面镀Cu的前处理和化学镀的工艺、条件等参数,采用SEM和XRD对镀Cu短碳纤维的形貌和成分进行了分析。通过粉末冶金制备了短碳纤维增强Cu基复合材料,研究了短碳纤维体积分数对复合材料的密度、硬度和电导率等的影响。结果表明,采用380℃灼烧30min为较佳的碳纤维除胶工艺;与超声分散和磁力搅拌相比,采用电动搅拌时短碳纤维分散性好,且化学镀Cu镀层均匀致密。随着镀Cu短碳纤维含量的增加,复合材料的密度和电导率呈现下降的趋势,硬度呈现先提高后降低的趋势,其中在镀Cu短碳纤维含量达12.5%时,Cu基复合材料硬度值最高;镀Cu的短碳纤维Cu基复合材料的物理性能优于未镀Cu的短碳纤维复合材料。The surface treatment of the carbon fiber before plating and the processing parameters of electroless plating surface were investigated, and the morphology and composition of copper-coated carbon fibers were observed by SEM （scanning electron microscopy） and XRD （X-ray diffraction）. The short carbon fiber reinforced copper matrix composites were prepared by powder metallurgy. The influences of the short carbon fiber volume fraction on the density, hardness and electrical conductivity of the composites prepared were analyzed. The results show that the satisfied degumming process of carbon fiber can be obtained with burning at 380 ℃ for 30 min. Compared with ultrasonic dispersion or magnetical stirring, electric stirring exhibits the better effects in the dispersity of short carbon fiber, which can realize the uniform dense electroless deposition. With the increase of the short carbon fiber volume fraction, the density and electrical conductivity of the composites are decreased, and the hardness of the composites is increased at first and then decreased. With the content of copper-coated carbon fibers of 12.5 %, the hardness of the composites prepared reaches up to the maximum value. The physical properties of copper based composites with the copper-coated carbon fibers are superior to that of ones without copper-coated carbon fibers.

关 键 词：短碳纤维 CU基复合材料 化学镀Cu 电导率 硬度 密度 

分 类 号：TB333[一般工业技术—材料科学与工程]