采用超音速活性电弧喷涂技术在Q235钢基体表面制备PS45/CuAl8伪合金复合涂层,将该涂层在600℃和800℃进行循环氧化,采用XRD、SEM和精密天平等乎段对涂层的显微结构进行表征,研究了涂层的循环氧化性能.结果表明:PS45/CuAl8伪合金复合涂层主要由Al203,Cr203、α-Cu和γ-Ni同溶体组成,组织致密,颗粒成扁平状且扁平化程度高、分布均匀.经高温循环氧化后在涂层表面形成了一层致密的Al203+Cr203+Ni(Al,Cr)204薄膜,避免了A1203薄膜的剥落,从而降低了涂层氧化速率,提高了基体的抗高温循环氧化性能.
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