Oxidation and corrosiOn behavior of titanium aluminum nitride coatings by arc ion plating

• Published in: Transactions of Nonferrous Metals Society of China Vol. 16; no. A02; pp. 75 - 80
• Main Author: 李明升 冯长杰 张志峰 王福会
• Format: Journal Article
• Language: English
• Published: State Key Laboratory for Corrosion and Protection,Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China%State Key Laboratory for Corrosion and Protection,Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China 01.09.2006; Jiangxi Key Laboratory of Surface Engineering,Jiangxi Science and Technology Normal University, Nanchang 330013, China
• Subjects: 抗氧化性能; 电弧离子电镀法; 耐腐蚀性; （Ti,Al）N镀层; arc ion plating; (Ti,Al)N; oxidation-resistance; corrosion-resistance
• ISSN: 1003-6326

Composite metastable TiN and Ti1-xAlxN coatings with different Al content were deposited on 1Cr11Ni2W2MoV stainless steel for aero-engine compressor blades by arc ion plating. The results show that all coatings have a B1NaCl structure and the preferred orientation changes from （111） to （220） with increasing Al content; the lattice parameter of Ti1-xAlxN decreases with the increase of Al content. The oxidation-resistance of （Ti,Al）N coatings is significantly improved owing to the formation of Al-riched oxide on the surface of the coatings. The nitride coatings can significantly improve the corrosion-resistance of 1Cr11Ni2W2MoV stainless steel under the synergistic of water vapor and NaCI, and the corrosion-resistance becomes better when the Al content increases, because not only the quick formation of thin alumina layer prevents the further corrosion but also the formation of alumina seals the pinholes or defects in the coatings, which prevents the occurrence of localized nodules-like corrosion.