SiCp/Al复合材料微弧氧化膜的组织结构及性能  

Microstructure and properties of micro-arc oxidation film on SiCp/Al matrix composites

作　　者：杜春燕[1] 黄树涛[2] 于晓琳[2] 王全兆[3] 赵晖[1] DU Chunyan;HUANG Shutao;YU Xiaolin;WANG Quanzhao;ZHAO Hui(School of Material Science and Engineering,Shenyang Ligong University,Shenyang 110159,China;School of Mechanical Engineering,Shenyang Ligong University,Shenyang 110159,China;Institute of Metal Research,Chinese Academy of Science,Shenyang 110016,China)

机构地区：[1]沈阳理工大学材料科学与工程学院,沈阳110159 [2]沈阳理工大学机械工程学院,沈阳110159 [3]中国科学院金属研究所,沈阳110016

出　　处：《复合材料学报》2020年第8期1960-1968,共9页Acta Materiae Compositae Sinica

基　　金：辽宁省特聘教授资助项目。

摘　　要：采用微弧氧化技术对SiC体积分数分别为17vol%和55vol%的两种SiCp/Al复合材料进行处理。分析了两种材料微弧氧化膜的组织、形貌、相组成,测定了膜层的粗糙度、显微硬度、结合力,考察了膜层的耐磨和耐蚀性。结果表明:SiC的含量对SiCp/Al复合材料微弧氧化膜的表面形貌、粗糙度、相组成、结合力及摩擦磨损性能均有影响。17vol%SiCp/2009Al复合材料的微弧氧化膜较55vol%SiCp/6061Al复合材料更平整,微孔大小更均匀。55vol%SiCp/6061Al复合材料的微弧氧化膜的粗糙度(3.308μm)比17vol%SiCp/2009Al复合材料(2.140μm)大,表面熔融物堆积更多。两种材料的微弧氧化膜中均含有Al、Si、O、C、W等元素。55vol%SiCp/6061Al复合材料的微弧氧化膜中Mullite(SiO2-Al2O3)相、α-Al2O3相、β-Al2O3相较多。17vol%SiCp/2009Al复合材料的微弧氧化膜的结合(38.55 N)较55vol%SiCp/6061Al(11.5 N)复合材料好。55vol%SiCp/6061Al复合材料的微弧氧化膜摩擦系数较大,磨损较严重。微弧氧化处理能有效改善两种SiCp/Al复合材料的耐蚀性。Two kinds of SiCp/Al composites with volume fraction of silicon carbide(17 vol%and 55 vol%)were treated by micro-arc oxidation.The microstructure,morphology,phase composition of micro-arc oxidation film on the two materials were analyzed.The roughness,microhardness,bonding force of films were measured.The wear and corrosion resistance of films were investigated.The results show that the content of SiC has an effect on the surface morphology,roughness,phase composition,bonding force and wear resistance of SiCp/Al composites.The micro-arc oxidation film of 17 vol%SiCp/2009 Al composite is flatter than the 55 vol%SiCp/6061 Al composite,and the pore size is more uniform.The micro-arc oxidation films of both materials contain elements such as Al,Si,O,C,and W.The roughness of the 55 vol%SiCp/6061 Al composite micro-arc oxidation film(3.308μm)is larger than that of the17 vol%SiCp/2009 Al composite(2.140μm),and has more surface melt.The micro-arc oxidation film of55 vol%SiCp/6061 Al composite has more mullite phase,α-Al2 O3 phase andβ-Al2O3 phase.The combination of microarc oxidation film and matrix of 17 vol%SiCp/2009 Al composite(38.55 N)is better than that of 55 vol%SiCp/6061 Al composite(11.5 N).The micro-arc oxidation film of 55 vol%SiCp/6061 Al composite has large friction coefficient and serious wear.The corrosion resistance of SiCp/Al composites is improved by micro-arc oxidation treatment.

关 键 词：铝基复合材料 微弧氧化 氧化膜 组织结构 结合力 耐磨性 耐蚀性 

分 类 号：TB331[一般工业技术—材料科学与工程]