Abstract: Experimental study on molybdenum base pseudo-alloy coating and its friction and wear performance is carried out. Through the analysis of microstructure of the coating, the result showed that blending the molybdenum powders, self melting powders and alumina powelers followed by plasma-spraying the wear-resisting and anti-friction molybdenum base pseudo-alloy coating could be formed. Phases of it distributed homogeneously and bonded well, which was a typically strengthened model-Multicelluler wear-resisting surface between soft phases and hard phases. This research may contribute to provide bases to develop face functional coating working under boundary lubrication conditions.

Key words: Coating, Melting-wear, Pseudo-alloy, Thermal-spraying, Dynamic metamodel, Kriging , Minimize lower confidence bound, Trust region