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.
出处
《中国有色金属学会会刊：英文版》
EI
CSCD
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
