中文摘要：

磁控管噼啪声免职被用来与一样的作文在铸石金底层上生产 Ti-48Al-8Cr-2Ag 涂层。热腐蚀被执行在熔融(Na， K ) 在 900 deg C 的 _2SO_4 和 Na_2SO_4+NaCl。劈啪作响的 nanocrystalline 涂层显示出许多 betterhot 腐蚀抵抗在熔融(Na， K ) 由于连续、紧缩的 Al_2O_3 规模的形成的 _2SO_4。TiAlCrAg 合金的 nanocrystallization 延长脱离腐蚀的孵化并且在熔融的 Na_2SO_4 +NaCl 改进 TiAlCrAg 合金的热腐蚀的抵抗。相关腐蚀机制被讨论。

英文摘要：

Magnetron-sputter deposition was used to produce Ti-48Al-8Cr-2Ag coating on a cast alloy substrate with the same composition. Hot corrosion was carried out in molten （Na,K）2SO4 and Na2SO4＋NaCl at 900 ℃. The sputtered nanocrystalline coating shows much better hot-corrosion resistance in molten （Na,K）2SO4 as a result of the formation of a continuous and compact Al2O3 scale. The nanocrystallization of TiAlCrAg alloy prolongs the incubation of breakaway corrosion and improves the hot-corrosion resistance of TiAlCrAg alloy in molten Na2SO4＋NaCl. The relevant corrosion mechanism was discussed.