表面技术2011，Vol.40Issue(3)：1-4,4.
T91钢超音速电弧喷涂45CT涂层在90%Ar+10%H2O气氛中的循环氧化行为
The Cyclic Oxidation Behavior of Supersonic Arc Sprayed 45CT Coating on T91 Steel in 90％Ar-10％H2O
摘要
Abstract
45CT coating was prepared on T91 steel by supersonic arc spraying process. The cyclic oxidation tests of the coated samples were conducted in 90％ Ar+ 10％ H2O atmosphere at 800℃ and 850℃, respectively. The morphology, microstructures and composition of the coating and oxide scales were examined by XRD and SEM/EDS. It is shown that after oxidation at 800℃ the oxides formed on the coated samples are mainly composed of Cr2O3, NiCr2O4 and NiO, however Fe2O3 is detected after oxidation at 800℃. The coated samples exhibite good cyclic oxidation resistance at 800 ℃. When the coated samples oxidized at 850℃ many cracks are observed in the coatings, Fe diffuses outward through the cracks to form iron oxide, which leads to coating failure during oxidation.关键词
45CT涂层/水蒸气/循环氧化Key words
45CT coating/ water vapor/ cyclic oxidation分类
矿业与冶金引用本文复制引用
刘光明,汪海云,黄蜜,田继红,杜楠..T91钢超音速电弧喷涂45CT涂层在90%Ar+10%H2O气氛中的循环氧化行为[J].表面技术,2011,40(3):1-4,4.基金项目
无损检测技术教育部重点实验室项目(2007ZE56009) （2007ZE56009）
