Journal
TRIBOLOGY INTERNATIONAL
Volume 178, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.triboint.2022.108069
Keywords
Diamalloy3001; Wear; HVOF; CoCrMoSi alloy
Categories
Ask authors/readers for more resources
CoMoCrSi alloys with intermetallic Laves phases exhibit high hardness and excellent wear resistance. Diamalloy3001 coatings deposited using HVOF spraying process showed low wear rates at room temperature due to the formation of tribolayers composed of Co, Cr, and Mo oxides. However, at elevated temperatures, detachment of tribolayers and formation of cavities increased the wear rates.
CoMoCrSi alloys exhibit high hardness and excellent wear resistance due to the presence of intermetallic Laves phases in a metallic Co-matrix. In this study, we deposited Diamalloy3001 coatings using high velocity oxy-fuel (HVOF) spraying process and evaluated their tribology at temperatures 25 degrees C, 200 degrees C and 350 degrees C. At room temperature, formation of tribolayers composed of oxides of Co, Cr, and Mo resisted localized shear deformation and resulted in low wear rates. At elevated temperatures, detachment of the tribolayers, and formation of cavities during reciprocating sliding resulted in high wear rates. Electron channel contrast imaging (ECCI) of the worn subsurface showed that at elevated temperatures, oxidation of splat boundaries led to interparticle debonding during wear and decreased the stability of the tribolayers.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available