title: Synthesis of advanced aluminide intermetallic coatings by low-energy Al-ion radiation.
abstract: Metals that work at high temperatures (for instance, superalloys in gas-turbines) depend on thermally grown oxide (TGO, commonly alumina) to withstand corrosion attack. Nickel Aluminide (NiAl) as one superior alumina TGO former plays an important role in protective coatings for turbine blades in gas-turbine engines used for aircraft propulsion and power generation. Lowering TGO growth rate is essentially favored for offering sustainable protection, especially in thermal barrier coatings (TBC). However, it can only be achieved currently by a strategy of adding the third element (Pt or reactive elements) into NiAl during traditional diffusion- or deposition-based synthesis of the coating. Here we present a highly flexible Al-ion radiation-based synthesis of advanced NiAl coatings, achieving low TGO growth rate without relying on the third element addition. Our results expand the strategy for lowering TGO growth rate and demonstrate potentials for ion radiation in advancing materials synthesis.
authors.affiliation: Institute of Metal Research, Chinese Academy of Sciences, 62 Wencui Road, 110016 Shenyang, China.
authors.forename: Mingli
authors.initials: M
authors.lastname: Shen
authors.affiliation: Institute of Metal Research, Chinese Academy of Sciences, 62 Wencui Road, 110016 Shenyang, China.
authors.forename: Yan
authors.initials: Y
authors.lastname: Gu
authors.affiliation: Institute of Metal Research, Chinese Academy of Sciences, 62 Wencui Road, 110016 Shenyang, China.
authors.forename: Panpan
authors.initials: P
authors.lastname: Zhao
authors.affiliation: Institute of Metal Research, Chinese Academy of Sciences, 62 Wencui Road, 110016 Shenyang, China.
authors.forename: Shenglong
authors.initials: S
authors.lastname: Zhu
authors.affiliation: Institute of Metal Research, Chinese Academy of Sciences, 62 Wencui Road, 110016 Shenyang, China.
authors.forename: Fuhui
authors.initials: F
authors.lastname: Wang