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POS1.54 Studies of HVOF Coatings by Improved (Ti,Mo)(C,N)–Ni Powder

Wednesday, May 23, 2012
Lanier Grand Ballroom (Hilton Americas Houston )
Dr. Junya Kitamura , Fujimi Incorporated, Kakamigahara, Gifu Pref., Japan
Fumihiro Kasahara , Fujimi Incorporated, Kakamigahara, Gifu Pref., Japan
Junya Yamada , Fujimi Incorporated, Kakamigahara, Gifu Pref., Japan
Kazuto Sato , Fujimi Incorporated, Kakamigahara, Gifu Pref., Japan
Lutz-Michael Berger , Toyohashi University of Technology, Toyohashi, Japan
Prof. Petri Vouristo , Tampere University, Tampere, Finland
(Ti,Mo)(C,N)-Ni , one of advanced TiC based spray powders, consists of core-rim-structured hard phase embedded in metal Ni binder phase. (Ti,Mo)(C,N)-Ni coatings prepared by HVOF shows interesting properties of low friction as well as high wear resistance under high temperature around 400-800 degree C, compared to other conventional WC and CrC based coatings. Influence of powder properties on spray ability and coating properties has been studied in this study. It has been found that grain size of carbide affects deposition efficiency in HVOF spray process. Microstrucure, hardness and wear properties of (Ti,Mo)(C,N)-Ni coatings have been also investigated to find out optimized powder properties for HVOF.
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