15-15Ti钢表面AlN/SiC双层薄膜的制备及耐Pb-Bi溶液腐蚀性能  

Preparation of AlN/SiC bilayer thin films on 15-15Ti steel surface and corrosion resistance in Pb-Bi solution

作　　者：林志伟[1] 李合琴[1] 张静[1] 唐琼[1] 

机构地区：[1]合肥工业大学材料科学与工程学院,安徽合肥230009

出　　处：《材料热处理学报》2017年第11期114-119,共6页Transactions of Materials and Heat Treatment

基　　金：中国科学院战略性先导科技专项基金(XDA03040000)

摘　　要：采用磁控溅射法在15-15Ti不锈钢上沉积AlN/SiC双层薄膜,并在800℃氩气气氛中退火120 min。用XRD、AFM和SEM表征了薄膜的结构和形貌。测试了镀膜前后15-15Ti钢在500℃持续1000 h条件下在含氧质量分数为(0.76~1.39)×10-8%的铅铋溶液中的耐腐蚀性能。结果表明:未镀膜15-15Ti钢的腐蚀层厚度约为600 nm,并且钢发生了溶解腐蚀;而镀膜后的钢未发现铅铋合金的侵蚀现象,钢的耐腐蚀能力明显提高。AlN/SiC bilayer films were deposited on 15-15 Ti austenitic stainless steel surface by magnetron sputtering,and then the films were annealed at 800 ℃ for 120 min under argon atmosphere. The structure and morphology of the films were characterized by means of XRD,AFM and FESEM. The corrosion resistance of the steel without and with the films immerged in Pb-Bi solution with oxygen content of（ 0. 76-1. 39） × 10^-8 mass% at 500 ℃ for 1000 h was tested. The results show that the corrosion layer thickness of the 15-15 Ti steel without the films is about 600 nm,and the steel is subject to dissolving corrosion. However,the erosion is not observed in the steel with AlN/SiC bilayer films,and the corrosion resistance of the steel with Al N/Si C bilayer films is improved obviously.

关 键 词：15-15Ti钢 铅铋合金 AlN/SiC双层薄膜 磁控溅射 耐腐蚀性能 

分 类 号：TG174.44[金属学及工艺—金属表面处理]