AZ91D镁合金表面激光熔覆铜基非晶复合涂层的组织研究Microstructure of Cu-based amorphous composite coatings on AZ91D magnesium alloy by laser cladding

J. Mater. Sci. Technol. ›› 2009, Vol. 25 ›› Issue (04): 492-498.

AZ91D镁合金表面激光熔覆铜基非晶复合涂层的组织研究Microstructure of Cu-based amorphous composite coatings on AZ91D magnesium alloy by laser cladding

黄开金

华中科技大学材料学院

收稿日期:2008-05-13 修回日期:2008-12-31 出版日期:2009-07-28 发布日期:2009-10-10
通讯作者: 黄开金

Microstructure of Cu-based Amorphous Composite Coatings on AZ91D Magnesium Alloy by Laser Cladding

Kaijin Huang^1,2)†, Changsheng Xie²⁾, T.M. Yue³⁾

1) State Key Laboratory of Advanced Welding Production Technology, Harbin Institute of Technology, Harbin 150001, China
2) State Key Laboratory of Materials Processing and Die & Mould Technology, Huazhong University of Science and Technology, Wuhan 430074, China
3) Department of Industrial and Systems Engineering, Hong Kong Polytechnic University, Hung Hom, Hong Kong, China

Received:2008-05-13 Revised:2008-12-31 Online:2009-07-28 Published:2009-10-10
Contact: Kaijin Huang
Supported by:
the Open Fund of the State Key Laboratory of Advanced Welding Production Technology in Harbin Institute of Technology, China
the Open Fund of the State Key Laboratory of Materials Processing and Die & Mould Technology in Huazhong University of Science and Technology, China

摘要/Abstract

摘要：

为了提高AZ91D镁合金表面耐磨性,采用激光熔覆技术在其表面分别熔覆了Cu47Ti34Zr11Ni8 和 Cu47Ti34Zr11Ni8+20 wt.% SiC的粉末,制备出铜基非晶复合涂层.采用XRD, SEM, EDS和TEM技术研究了该涂层的组织.研究结果表明,涂层主要由非晶和不同的金属间化合物组成.本文详细解释了非晶相的形成和SiC颗粒的作用.

关键词: 激光熔覆;铜基非晶复合涂层;碳化硅颗粒;AZ91D镁合金

Abstract:

To improve the sliding wear resistance of AZ91D magnesium alloy, Cu-based amorphous composite coatings made of Cu₄₇Ti₃₄Zr₁₁Ni₈ and Cu₄₇Ti₃₄Zr₁₁Ni₈+20 wt pct SiC powders were fabricated on AZ91D magnesium alloy by laser cladding, respectively. SEM (scanning electron microscopy), EDS (energy dispersive X-ray spectroscopy), XRD (X-ray diffraction) and TEM (transmission electron microscopy) techniques were employed to study the phases of the coatings. The results show that the coatings mainly consist of amorphous phase and different intermetallic compounds. The reason of formation of amorphous phase and the function of SiC particles were explained in details.

Key words: Laser cladding, Cu-based amorphous composite coating, SiC particle, AZ91D magnesium allo

黄开金. AZ91D镁合金表面激光熔覆铜基非晶复合涂层的组织研究Microstructure of Cu-based amorphous composite coatings on AZ91D magnesium alloy by laser cladding[J]. J. Mater. Sci. Technol., 2009, 25(04): 492-498.

Kaijin Huang,Changsheng Xie,T.M. Yue. Microstructure of Cu-based Amorphous Composite Coatings on AZ91D Magnesium Alloy by Laser Cladding[J]. J Mater Sci Technol, 2009, 25(04): 492-498.

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