Mechanism of surface modification of CeO in laser remelted alloy
نویسندگان
چکیده
The microstructures and properties of laser remelted alloy spray coatings were studied by means of wear testing, corrosion testing, microhardness testing, scanning electron microscopy, electron probe microanalysis and transmission electron microscopy. The results show that the wear and corrosion resistance of laser remelted alloy spray coatings is remarkably increased by the addition of CeO . The 2 mechanism of surface modification of CeO in the laser remelted alloy spray coatings is discussed. It is suggested that the rare earth can 2 refine the microstructure, strengthen and purify the grain boundary, and improve the morphology and distribution of eutectics and compounds. q 1998 Elsevier Science S.A. All rights reserved.
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