Al2O3基復相陶瓷涂層
(遼寧工程技術大學 材料科學與工程學院，阜新 123000)
摘 要: 采用SHS反應火焰噴涂技術，把Al-CuO系鋁熱劑引入到噴涂材料中，在AZ91D表面制備了Al2O3基復相陶瓷涂層。結果表明：SHS反應熱噴涂層綜合性能明顯優(yōu)于傳統(tǒng)熱噴涂層，傳統(tǒng)熱噴涂層的熱震次數、開氣孔率、耐蝕性和耐磨性分別為14次、17.4%、基體的24倍和8.5倍；而反應熱噴涂層則分別為40次、15.2%、基體的37倍和10.6倍。若輔以Ni-Al合金打底，噴后重熔工藝可使反應噴涂層的綜合性能進一步提高。
關鍵字: AZ91D鎂合金；SHS反應熱噴涂；陶瓷涂層
（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
