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Wear and corrosion properties of laser cladded Cu47Ti34Zr11Ni8/SiC amorphous composite coatings on AZ91D magnesium alloy

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【作者】 黄开金； 闫里； 王存山； 谢长生； 周昌荣；

【Author】 HUANG Kai-jin1,2,3,4,YAN Li1,WANG Cun-shan3,XIE Chang-sheng1,ZHOU Chang-rong4 1.State Key Laboratory of Materials Processing and Die&Mould Technology,Huazhong University of Science and Technology,Wuhan 430074,China;2.State Key Laboratory of Advanced Welding Production Technology,Harbin Institute of Technology,Harbin 150001,China;3.State Key Laboratory of Materials Modification by Laser,Ion and Electron Beams,Dalian University of Technology,Dalian 116024,China;4.Guangxi Key Laboratory of Information Materials,Guilin University of Electronic Technology,Guilin 541004,China

【机构】 State Key Laboratory of Materials Processing and Die&Mould Technology,Huazhong University of Science and Technology； State Key Laboratory of Advanced Welding Production Technology,Harbin Institute of Technology； State Key Laboratory of Materials Modification by Laser,Ion and Electron Beams,Dalian University of Technology； Guangxi Key Laboratory of Information Materials,Guilin University of Electronic Technology；

【摘要】 To improve the wear and corrosion properties of AZ91D magnesium alloys,Cu-based amorphous composite coatings were fabricated on AZ91D magnesium alloy by laser cladding using mixed powders of Cu47Ti34Zr11Ni8 and SiC.The wear and corrosion behaviours of the coatings were investigated.The wear resistance of the coatings was evaluated under dry sliding wear condition at room temperature.The corrosion resistance of the coatings was tested in 3.5%(mass fraction) NaCl solution.The coatings exhibit excellent wear resistance due to the recombined action of amorphous phase and different intermetallic compounds.The main wear mechanisms of the coatings and the AZ91D sample are different.The former is abrasive wear and the latter is adhesive wear.The coatings compared with AZ91D magnesium alloy also exhibit good corrosion resistance because of the presence of the amorphous phase in the coatings.

【Abstract】 To improve the wear and corrosion properties of AZ91D magnesium alloys,Cu-based amorphous composite coatings were fabricated on AZ91D magnesium alloy by laser cladding using mixed powders of Cu47Ti34Zr11Ni8 and SiC.The wear and corrosion behaviours of the coatings were investigated.The wear resistance of the coatings was evaluated under dry sliding wear condition at room temperature.The corrosion resistance of the coatings was tested in 3.5%(mass fraction) NaCl solution.The coatings exhibit excellent wear resistance due to the recombined action of amorphous phase and different intermetallic compounds.The main wear mechanisms of the coatings and the AZ91D sample are different.The former is abrasive wear and the latter is adhesive wear.The coatings compared with AZ91D magnesium alloy also exhibit good corrosion resistance because of the presence of the amorphous phase in the coatings.

【关键词】 magnesium alloy； AZ91D alloy； laser cladding； wear； corrosion； amorphous phase；
【Key words】 magnesium alloy； AZ91D alloy； laser cladding； wear； corrosion； amorphous phase；
【基金】 Project(AWPT08-10)supported by the Open Fund of the State Key Laboratory of Advanced Welding Production Technology in Harbin Institute of Technology,China;Project(mmlab0706)supported by the Open Fund of the State Key Laboratory of Materials Modification by Laser,Ion and Electron Beams in Dalian University of University,China;Project(0710908-05-K)supported by the Research Funds of the Guangxi Key Laboratory of Information Materials in Guilin University of Electronic Technology,China
  • 【文献出处】 Transactions of Nonferrous Metals Society of China ,中国有色金属学报(英文版) , 编辑部邮箱 ,2010年07期
  • 【分类号】TG174.44
  • 【被引频次】23
  • 【下载频次】212
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