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1引言宇航及汽车工业采用耐用高应力部件的前题是这些部件应具有足够的耐磨性和耐热性。近十年来迅速发展的热喷射工艺提供了调整所需表面特性的可能性。氧化物陶瓷作为镀层材料特别引人注目，因为与金属材料相比，它具有密度小、热阻大、耐高温性好，而且耐磨强度高。目前用以
1 Introduction The precondition for the durable and high-stress parts used by aerospace and automotive industries is that these parts should have adequate wear resistance and heat resistance. The rapid development of thermal spraying processes over the past decade has provided the possibility of adjusting the desired surface properties. Oxide ceramics are particularly attractive as coating materials because of their low density, large thermal resistance, high temperature resistance, and high wear resistance as compared to metallic materials. Currently used