标题：Influence of Al2O3-Y2O3 and Ce-Al-Ni amorphous alloy on physical properties of laser synthetic composite coatings on titanium alloys
作者：Li, Jianing; Yu, Huijun; Gong, Shuili; Chen, Chuanzhong; Weng, Fei; Ding, Li; Pan, Yaokun; Shan, Feihu
作者机构：[Li, Jianing; Chen, Chuanzhong; Pan, Yaokun] Shandong Univ, Sch Mat Sci & Engn, Minist Educ, Key Lab Liquid Solid Struct Evolut & Proc Mat, Jinan 2500 更多
通讯作者地址：[Yu, HJ]Shandong Univ, Sch Mech Engn, Minist Educ, Key Lab High Efficiency & Clean Mech Mfg, Jingshi Rd 17923, Jinan 250061, Peoples R China.
来源：SURFACE & COATINGS TECHNOLOGY
关键词：Metal-matrix composites (MMCs); Surface properties; Surface treatments;; Lasers; Coatings
摘要：An amorphous-nanocrystal reinforced composite coating was fabricated on Ti-6A1-4V titanium alloy by laser cladding (LC) of the Al3Ti-TiB2-(Ni-coated WC)-Al2O3-Y2O3 mixed powders. Test results indicate that the lots of the nanoscale particles (NP), nanorods and amorphous phases were produced in such coating. Amorphous/ nanocrystalline interface owns a high bonding energy, which may retard the growth of nanocrystals in a certain extent. With Ce-Al-Ni amorphous addition, amorphous surrounded nanopolycrystals (ASNPs) were produced after the LC process. Although coarser microstructure was obtained with productions of ASNPs, the Ce-Al-Ni addition played an important amorphization effect on such LC coating, which was beneficial in increasing wear resistance of the LC coating. (C) 2014 Elsevier B.V. All rights reserved.