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《Materials Review》 2018-S1
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Research Status of Erosion Failure Behavior of HVOF Sprayed Cermet Coatings

LIU Xiaobin;KANG Jiajie;YUE Wen;FU Zhiqiang;ZHU Lina;WANG Chengbiao;School of Engineering and Technology,China University of Geosciences(Beijing);National International Joint Research Center of Deep Geodrilling Equipment,China University of Geosciences(Beijing);Key Laboratory of Deep Geodrilling Technology,Ministry of Land and Resources,China University of Geosciences(Beijing);  
High velocity oxygen fuel technology has the advantages of high particle velocity,good coating quality,fast deposition speed,good material selectivity and high bonding strength with the substrate.Erosion is one of the main failure mode of the hydraulic turbine parts,ship propeller,mud pump and drill pipe.The cermet coating prepared by HVOF technique can significantly improve the erosion resistance of metal parts.The research status of erosion failure behavior of HVOF spraying cermet coating were reviewed.The influence of external factors such as erosion particle size,impact velocity,angle as well as the internal factors such as porosity,bonding strength between coating and substrate,powder particle size and the carbide particle size on the erosion failure mechanism of HVOF sprayed cermet coating was summarized.It was pointed out that the influence mechanism of external conditions and performance parameters of the coatings on the erosion failure behavior is one of the key directions for future research.
【Fund】: 国家自然科学基金航天先进制造技术研究联合基金培育项目(U1537108);国家自然科学基金面上项目(41772389);; 北京市自然科学基金面上项目(3172026;3182032)
【CateGory Index】: TG174.4
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