Microstructural characterization and wear behaviour of High Velocity Oxy-Fuel sprayed Cr3C2-25NiCr coating

Cr3C2-25NiCr coating was deposited by high velocity oxy-fuel spray (HVOF) process. The microstructural and mechanical characterization of coating was carried out. The wear rate increased with applied load and maximum wear rate and lower coefficient of friction (COF) was observed at higher loads. The...

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Bibliographic Details
Main Authors: Vashishtha, Nitesh, Sapate, S.G., Jyoti Sahariah, Bikram, Bagde, Pranay
Format: Conference Proceeding
Language:English
Subjects:
fracture Introduction
Friction
HVOF coating
sliding
tribofilm
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Summary:Cr3C2-25NiCr coating was deposited by high velocity oxy-fuel spray (HVOF) process. The microstructural and mechanical characterization of coating was carried out. The wear rate increased with applied load and maximum wear rate and lower coefficient of friction (COF) was observed at higher loads. The friction and wear response of the coating was rationalized with respect to mechanism of wear and composition of tribo oxides. The lower COF observed at higher loads was due to formation of tribooxide film, which acted as lubricant. The carbide fracture, carbide pull out, delamination cracking and splat fracture were important mechanisms of materials removal
ISSN:2214-7853
2214-7853
DOI:10.1016/j.matpr.2018.06.089