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Oxidation Behavior of the Nickel-Based Superalloy DZ125 at 980℃ 被引量:6
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作者 Ye-Bing Hu Li Zhang +3 位作者 Cong-Qian Cheng Peng-Tao Zhao guang-ping guo Jie Zhao 《Acta Metallurgica Sinica(English Letters)》 SCIE EI CAS CSCD 2017年第9期857-862,共6页
The isothermal oxidation behavior of the nickel-based superalloy DZ125 was investigated at 980 ~C through SEM/EDX and XRD. The weight loss process exhibited three periods--initial, transient and steady stages, which c... The isothermal oxidation behavior of the nickel-based superalloy DZ125 was investigated at 980 ~C through SEM/EDX and XRD. The weight loss process exhibited three periods--initial, transient and steady stages, which corre- spond to the formation of three layers on the surface. The outer layer was composed of NiO, whereas the intermediate layer mainly consisted of spinels and was accompanied with Ta-rich oxide. Alumina was evident as the inner continuous layer close to the substrate. The first formation of alumina was responsible for the initial stage of weight loss, and the formation of NiO and intermediate layer may dramatically affect on the transient and steady stage, respectively. The oxide scales effect on growth mechanism was discussed. 展开更多
关键词 Nickel-based SUPERALLOY OXIDATION ALUMINA
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