为研究强氧化环境中，显微结构和相组成对Fe基非晶/纳米晶复合涂层的腐蚀腐蚀性能的影响，采用大气等离子喷涂(APS)技术，在1Cr18Ni9Ti不锈钢基体上喷涂制得具有不同微结构和相组成的Fe基非晶/纳米晶的复合涂层。采用XRD、SEM、TEM和DSC等检测方法对涂层的组织和相组成、晶化行为、晶化程度、内部的孔隙等微观结构进行表征。采用电化学法研究具有不同微结构和相组成的涂层在30%H2O2 (质量分数，下同)溶液中的腐蚀行为，探讨Fe基非晶/纳米晶复合涂层在强氧化环境中的腐蚀机理。研究表明，Mo3Si和Fe5Si3相的形成使得涂层耐腐蚀性能明显降低。
In order to investigate the effect of microstructure and phase composition on the corrosion resistance of Fe based amorphous and nanocrystalline coating in strong oxidative solution, suitable samples were prepared through the control of process parameter during air plasma spraying(APS) progress. A FeCrNiMoBPSiC powder was deposited onto the stainless steel (1Cr18Ni9Ti) substrate via APS. XRD, SEM, TEM and DSC were performed to investigate the characteristics of the coatings in composition of the phases, the rate and progress of crystalline, and porosity inner the coatings. In order to investigate the effect of microstructure and composition of the phases on the corrosion resistance of the coatings in 30%(mass percent) H2O2 solution, electrochemical workstation was applied. The results showed that the corrosion resistance of the coating decreases significantly for the formation of Mo3S and Fe5Si3.
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