Sliding wear behaviour of alumina coatings prepared from mechanically milled powders
作者： P.A. Manojkumar , A.S. Gandhi , M. Kamaraj , A.K. Tyagi
DOI: 10.1016/J.WEAR.2014.02.008
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摘要: Abstract There is a need for coatings to resist not only wear but also chemical attack and excessive heat. Alumina were applied type 304 stainless steel using the detonation gun method with high energy ball milled powder having an 83 nm average crystallite size. Coatings varying amounts of partially melted (PM) re-solidified (RS) alumina obtained by adjusting heat input gun-substrate distance. Deposition conditions which enhance formation thinner splats nano-particulate found improve sliding resistance when mated under reciprocating test conditions. The observed lower rate was due absence brittle deformation layers friction coefficient. mechanism correlated their microstructures hardness data from polished cross-sections.
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