WEAR PROPERTY OF PLASMA-SPRAYED COATING LAYERA IN Cr$_2$O$_3$
Pakr, J.M.;Lee, S.W.;Kim, Byong-Kee;Lee, Dong-Won;
Department of Materials Engineering, Sun Moon University;Korean Institute of Machery and Materials, Department of Materials Processing;
Wear property of plasma spray coating in $Cr_2O_3$ powder manufatured of spray dry method on the aluminum substrate was inspected for the application of piston-ring of automotive enginel. The plama spray coatings were varied with feed rate and particle size. Used the ball-on disc type tribometer, wear volume, friction, surface rougness were investigated. The delamination of the coating layer were observed with SEM. Also the cross-section of wear track were investigated, using optical microscopy. As a result of experiment, wear mechanism was addressed in the various coating process.
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