Effect of CrTiAlN Coatings on High-Temperature Oxidation Behavior of H13 Steel
CrTiAlN hard coatings have been deposited on H13 steel for improving the oxidation resistance by Closed Field Unbalanced Magnetron Sputter Ion Plating (CFUMSIP).The phase components,surface and section morphology of H13 steel before and after oxidation were analyzed by XRD and SEM.The results showed that the columnar crystal film possesses three major parts,i.e.,the internal Cr bonding layer,the intermediate CrN transition layer,the external CrTiAlN gradient coating.The selective oxidation of Cr element was found on the surface of uncoated H13 steel while oxidation,but a continuous protective layer was not formed because of low Cr content,finally a lot of alpha Fe2O3 particles took place on the surface of H13 steel owing to the oxidation of the matrix element.O element can diffuse much more easily through the coating and oxide scales at 800 ℃,and spallation and cracks were not found during the oxidation.These results indicated that the CrTiAlN coating have excellent high-temperature oxidation resistance at 800 ℃.
H13 steel CFUMSIP CrTiAlN coatings High-temperature oxidation
Hao Zhang Shuwang Duo Xiaoyan Fei Xiangmin Xu Tingzhi Liu Yubin Wang
Jiangxi Key Laboratory of Surface Engineering,Jiangxi Science & Technology Normal University,Nanchang 330013,China
国际会议
景德镇
英文
343-346
2012-10-15（万方平台首次上网日期，不代表论文的发表时间）