In situ synthesized high volume fraction WC reinforced Ni-based coating by laser cladding

被引：125
作者：
Shu, Da [1 ,2 ,3 ]
Li, Zhuguo [1 ]
Zhang, Ke [1 ]
Yao, Chengwu [1 ]
Li, Dayong [2 ]
Dai, Zhenbang [1 ]
机构：
[1] Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, Shanghai Key Lab Mat Laser Proc & Modificat, Shanghai 200240, Peoples R China
[2] Shanghai Jiao Tong Univ, Sch Mech Engn, Inst Precise Forming & Knowledge Based Engn, Shanghai 200240, Peoples R China
[3] Anhui Polytech Univ, Sch Mech & Automot Engn, Wuhu 241000, Anhui, Peoples R China
来源：
MATERIALS LETTERS | 2017年 / 195卷
基金：
中国国家自然科学基金;
关键词：
Laser processing; Metallic composites; High volume fraction reinforcement; WC; Solidification; In situ; COMPOSITE COATINGS; WEAR-RESISTANCE; MICROSTRUCTURE;
D O I：
10.1016/j.matlet.2017.02.076
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
An in situ synthesized high volume fraction WC reinforced Ni-based composite coating was fabricated on a mild steel substrate by using a high power diode laser. Three kinds of single-layer coatings of different amounts of W+C powder and Ni60 powder and a five-layer coating with different amounts of W+C and Ni60 powders in each layer were prepared. This work showed that the multilayer coating possesses the highest hardness among all coatings, and the maximum hardness of the coatings was about 3.7 times more than that of the substrate. The gradient coating technology combined with the feature that WC particles were liable to sink in the bottom of coating were employed as a new idea for preparing the composite coating free of pores and cracks. (C) 2017 Elsevier B.V. All rights reserved.
引用
收藏
页码：178 / 181
页数：4
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