以SUS430不锈钢粉末和具有钙钛矿结构的La0.8Sr0.2FeO3(LSF)陶瓷粉末为原料,通过粉末冶金方法制得了SUS430/LSF双层复合试样.对烧结SUS430不锈钢和LSF试样的密度和相组成进行了测试;通过氧化增重法测算了SUS430不锈钢及SUS430/LSF双层结构材料的氧化速率常数;采用四探针法对SUS430不锈钢及SUS430/LSF双层结构材料的面比电阻进行了测试;并对氧化前后材料的微观组织进行了观测.结果表明,采用本实验方法可以在烧结不锈钢基体表面制得致密的LSF涂层;在循环氧化过程中,LSF涂层与不锈钢基体结合牢固.SUS430/LSF双层结构材料在空气中于800 ℃氧化150 h后,氧化速率常数为2.81×10-15 g2·cm-4·s-1,比SUS430不锈钢降低了一个数量级以上,而其面比电阻则由SUS430不锈钢的74.65 mΩ·cm2降为15.55 mΩ·cm2.
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