P. Ren, Y. Yang, S. Zhu, F. Wang, Effect of Ti on the microstructure change and oxidation behavior of Ni+CrAlYHfSiN composite coatings, Corrosion Science, 150 (2019) 54-63.
发布日期: 2019-07-13 发布者: 郑洋 阅读: 49

Abstract

Two composite coatings are manufactured by reactive magnetron sputtering on superalloys. The effect of titanium on oxidation resistance and microstructural change of composite coatings were studied. Titanium in superalloys reacted with [N] ions in composite coating due to interdiffusion. The position of reaction zone was determined by the relative content of [N] ions and metallic aluminum in coating. Doping of titanium in alumina lead to a decrease of charged oxygen vacancies but Ti?Al forms in this process. The transportation of Ti?Al in oxide scale resulted in the formation of TiO2 and a higher oxidation rate of coating.