Al2O3基复相陶瓷涂层
(辽宁工程技术大学 材料科学与工程学院，阜新 123000)
摘 要: 采用SHS反应火焰喷涂技术，把Al-CuO系铝热剂引入到喷涂材料中，在AZ91D表面制备了Al2O3基复相陶瓷涂层。结果表明：SHS反应热喷涂层综合性能明显优于传统热喷涂层，传统热喷涂层的热震次数、开气孔率、耐蚀性和耐磨性分别为14次、17.4%、基体的24倍和8.5倍；而反应热喷涂层则分别为40次、15.2%、基体的37倍和10.6倍。若辅以Ni-Al合金打底，喷后重熔工艺可使反应喷涂层的综合性能进一步提高。
关键字: AZ91D镁合金；SHS反应热喷涂；陶瓷涂层
（College of Materials Science and Engineering, Liaoning Technical University, Fuxin12300, China）
Abstract:With SHS reaction flame spraying, Al2O3-based multiphase ceramic coating was prepared on AZ91D by introducing Al-CuO thermite into spraying materials. The results indicate that, the comprehensive properties of reaction spraying coatings are better than those of traditional ones. The thermal-shock times of traditional spraying coating is 14, the open porosity is 17.4%, the corrosion resistance and wear resistance are 24 and 8.5 times of those of the substrate, respectively, while those of the reaction ones are 40, 15.2%, 37 and 10.6, respectively. If adding Ni-Al alloy as the render and remelting after spraying, the comprehensive properties of reaction spraying coatings can be improved further.
Key words: AZ91D magnesium alloy; SHS reaction thermal spraying; ceramic coating
