等离子喷涂制备铁基复合陶瓷涂层的研究

以铝粉和氧化铁粉作原料,采用等离子反应合成技术制备出了金属颗粒增韧的FeAl2O4-Al2O3-Fe复合陶瓷涂层。研究分析了复合涂层的组织及其性能。结果表明：等离子反应合成得到了以层状基体相FeAl2O4与硬质相Al2O3为骨架,球状Fe相弥散分布于基体相上的复合涂层。复合涂层的断裂韧性和结合强度明显优于普通Al2O3涂层,特别是复合涂层的具有较高的耐磨性能。

Study on Fabrication of Fe-based Composite Ceramic Coatings by Plasma Spraying

Using aluminum powders and ferric oxide powders as raw materials, the FeAl2O4-Al2O3-Fe composite ceramic coatings were fabricated by adopting plasma spraying reactive synthetic technique. The microstructure and performance of the composite coatings were studied and analyzed. The results indicated that, the microstructure of the composite coatings is with the bedded matrix phase FeAl2O4 and the horniness phase Al2O3 as bone and the spherical Fe phase is distributed in the bedded coatings. The fracture toughness and bond strength of composite coatings excel that of Al2O3 coatings by plasma spraying, In particular, the coating has higher wear resistance compared with conventional alumina coatings.