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利用直流磁控溅射在316奥氏体不锈钢表面制备高含铝奥氏体不锈钢涂层,采用增重法、SEM、EDS和XRD研究了高含铝合金涂层对316奥氏体不锈钢在850℃下抗高温氧化性能的影响.结果表明,施加涂层显著提高了316不锈钢的抗氧化性能.其原因是高含铝合金涂层表面形成了由A12O3、Fe(Cr,A1)2O4和Cr2O3组成的连续致密的氧化膜,而316奥氏体不锈钢表面形成的是由Fe2O3、Cr2O3、FeCr2O4和少量NiCr2O4组成的疏松且不连续的氧化膜.“,”To improve the high-temperature oxidation resistance of austenitic stainless steels,the high-Al austenitic stainless alloy coatings were deposited on the surfaces of 316 austenitic stainless steel using the direct current magnetron sputtering.Cyclic oxidation tests were performed at 850 ℃ in air.The effect of the alloy coatings on the oxidation resistance of 316 austenitic stainless steel was studied by SEM,EDS and XRD.The oxidation resistance of 316 austenitic stainless steels with coatings was much better than that without coatings.The formation of a continuous and dense film on the surfaces of alloy coatings consisting of Al2O3,Fe(Cr,Al)2O4 and NiCrO3 is responsible for its excellent oxidation resistance.The poor oxidation resistance of 316 stainless steel can be ascribed to the formation of a rough and loose film on the surfaces consisting of Fe2O3,Cr2O3,FeCr2O4 and NiCr2O4.