Laser cladded AlCuFe+Sn quasicrystalline composite coatings  

作　　者：冯莉萍 邵天敏 金永吉 E.Fleury D.H.Kim 陈大融 魏悦广 

机构地区：[1]State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, China [2]State Key Laboratory of Non-Linearity Mechanics, Insititute of Mechanics, Chinese Academy of Sciences, Beijing 100080, China [3]Korea Institute of Science and Technology, Seoul 130-650, Korea [4]Center for Noncrystalline Materials, Yonsei University, Seoul 120-749, Korea

出　　处：《中国有色金属学会会刊：英文版》2005年第2期432-436,共5页Transactions of Nonferrous Metals Society of China

基　　金：Project(50075042) supported by the National Natural Science Foundation of China; Project(2003034143) supported bythe Postdoctoral Foundation of China

摘　　要：Al-Cu-Fe+Sn quasicrystalline(QC) composite coatings with different volume fractions of Sn, i.e.(12%,) (20%) (and 30%,) were prepared by laser cladding technique. The effects of soft phase Sn and processing parameters on the microstructure, microhardness and frictional behavior of the coatings were investigated. The results show that after laser cladding, i-phase existing in the powder is decomposed and element Sn reacts with Cu, forming β-CuSn. The volume fraction of Sn addition has less obvious effect on the microstructure, microhardness and friction performance than that of plasma sprayed coatings. The best performance in terms of microhardness and friction are (obtained) for the coating containing 20% Sn additions prepared with the laser power of 950 W and scanning velocity of 3 mm/s.Al-Cu-Fe+Sn quasicrystalline(QC) composite coatings with different volume fractions of Sn, i.e.(12%,) (20%) (and 30%,) were prepared by laser cladding technique. The effects of soft phase Sn and processing parameters on the microstructure, microhardness and frictional behavior of the coatings were investigated. The results show that after laser cladding, i-phase existing in the powder is decomposed and element Sn reacts with Cu, forming β-CuSn. The volume fraction of Sn addition has less obvious effect on the microstructure, microhardness and friction performance than that of plasma sprayed coatings. The best performance in terms of microhardness and friction are (obtained) for the coating containing 20% Sn additions prepared with the laser power of 950 W and scanning velocity of 3 mm/s.

关 键 词：激光覆层 电镀工艺 铝铜铁锡复合材料 摩擦性质 

分 类 号：TG174.4[金属学及工艺—金属表面处理]