Effects of graphite addition on the microstructure and properties of laser cladding Zr-Al-Ni-Cu amorphous coatings

被引：39
|
作者：
Wang, Yanfang [1 ,2 ]
Li, Gang [3 ]
Shi, Zhiqiang [1 ,2 ]
Liu, Mingxing [1 ,2 ]
Zhang, Xiuyun [1 ,2 ]
Liu, Yi [4 ]
机构：
[1] China Univ Petr Huadong, Dept Mat Sci & Engn, Qingdao 266580, Peoples R China
[2] China Univ Petr Huadong, State Key Lab Heavy Oil Proc, Qingdao 266580, Peoples R China
[3] Liaoning Tech Univ, Coll Mat Sci & Engn, Fuxin 123000, Peoples R China
[4] Xuzhou Inst Technol, Jiangsu Key Lab Large Engn Equipment Detect & Con, Xuzhou 221111, Peoples R China
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2014年 / 610卷
关键词：
Laser cladding; Amorphous; Coating; Microstructure; Properties; GLASS-FORMING ABILITY; BULK METALLIC-GLASS; CORROSION-RESISTANCE; COMPOSITE COATINGS; ALLOY;
D O I：
10.1016/j.jallcom.2014.05.009
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Laser cladding amorphous coating process is an important route to improve surface performances of crystalline substrate. In this study, Zr-Al-Ni-Cu amorphous composite coatings with some graphite additions were produced by laser cladding powders of alloying elements on a Ti substrate. The microstructures and phases formed in the coating were identified by X-ray diffraction (XRD), Scanning Electron Microscopy (SEM) and Transmission Electron Microscope (TEM). XRD and TEM analyses reveal the existence of the amorphous structure. Some intermetallic compounds phases (Cu,Ni)(10)Zr-7 and Zr3Al2 phases were also founded in the coatings. Addition of graphite in the coating can refine the microstructure, improve the microhardness and lower the friction coefficient of the coating. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：713 / 717
页数：5
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