Microstructure and performance of WC-10Co-4Cr coating with ultrafine / nanocrystalline structures - 文章详情页

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EI Scopus

摘要：

The　WC-10Co-4Cr　composite　powder　was　synthesized　firstly.　Then　the　composite　powder　was　agglomerated　to　prepare　the　thermal　spraying　feedstock.　The　ultrafine/nanostructured　WC-10Co-4Cr　coating　was　prepared　by　high　velocity　oxygen　fuel　(HVOF)　thermal　spraying.　The　phase　constitution,　elemental　distribution　and　microstructure　of　the　coating　were　characterized　by　the　X-ray　diffraction　(XRD)　and　transmission　electron　microscope　(TEM),　respectively.　The　wear　resistance　and　corrosion　resistance　of　the　prepared　composite　coating　were　tested.　The　results　show　that　the　main　phases　of　the　coating　include　WC,　binding　phase　with　partial　amorphous　structure,　with　a　little　W2C　and　Co(Cr)　coexisting.　The　distributions　of　Co　and　Cr　elements　from　the　phase　boundary　to　the　eutectic　area　then　to　Co　zone　were　analyzed　quantitatively.　The　mechanisms　for　the　formation　of　the　microstructure　and　effects　of　Cr　on　the　performance　of　the　composite　coating　are　proposed.

关键词：

Chromium compounds Cobalt Composite coatings Corrosion resistance Corrosion resistant coatings HVOF thermal spraying Microstructure Sprayed coatings Transmission electron microscopy Wear resistance

作者机构：

[ 1 ] [Wang, Xuezheng]College of Materials Science and Engineering, Key Laboratory of Advanced Functional Materials, Education Ministry of China, Beijing University of Technology, Beijing; 100124, China
[ 2 ] [Wang, Haibin]College of Materials Science and Engineering, Key Laboratory of Advanced Functional Materials, Education Ministry of China, Beijing University of Technology, Beijing; 100124, China
[ 3 ] [Song, Xiaoyan]College of Materials Science and Engineering, Key Laboratory of Advanced Functional Materials, Education Ministry of China, Beijing University of Technology, Beijing; 100124, China
[ 4 ] [Liu, Xuemei]College of Materials Science and Engineering, Key Laboratory of Advanced Functional Materials, Education Ministry of China, Beijing University of Technology, Beijing; 100124, China
[ 5 ] [You, Deqiang]College of Materials Science and Engineering, Key Laboratory of Advanced Functional Materials, Education Ministry of China, Beijing University of Technology, Beijing; 100124, China
[ 6 ] [Yang, Tao]College of Materials Science and Engineering, Key Laboratory of Advanced Functional Materials, Education Ministry of China, Beijing University of Technology, Beijing; 100124, China

通讯作者信息：

宋晓艳
[song, xiaoyan]college of materials science and engineering, key laboratory of advanced functional materials, education ministry of china, beijing university of technology, beijing; 100124, china

电子邮件地址：

xysong@bjut.edu.cn

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