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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 17    No. 3    June 2007

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Difference in particle characteristics and coating properties between spraying metallic and ceramic powder cored wires
FANG Jian-yun(方建筠), LI Zhuo-xin(栗卓新), JIANG Jian-min(蒋建敏), SHI Yao-wu(史耀武)

College of Materials Science and Engineering, Beijing University of Technology, Beijing 100022,China

Abstract:The sprayed particles of metallic and cermet wires were collected to analyze the atomization state of the particles in arc spraying forming, the microstructure and properties of metallic and ceramic coatings were investigated and compared. Particle size analyzer was used for quantifying particle size. The XRD, SEM and optical microscope(OM) were used to analyze the phase composition and microstructure of the particles and coatings. From the experimental results, some difference of particle characteristics was established between the spraying metallic and ceramic cored wires, and the microstructure and properties of coatings depend strongly on the particles behaviors. The result shows that Fe-TiB2/Al2O3 composite coating has a high potential for abrasive wear applications.

 

Key words: metallic powder; ceramic powder; cored wire; arc spraying; particle characteristic

ISSN 1672-7029
CN 43-1423/U

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