金属间化合物TiAl在各种溶液和熔盐中阴极充氢时,当阴极电流大于临界值后就将发生严重的腐蚀现象,这种阴极腐蚀速率随阴极电流增大而线性增加,在恒电位下阴极腐蚀速率远比阳极溶解速率要高,在酸性溶液中阴极腐蚀速率最高,碱性溶液中次之,盐溶液中最小;酸中阴极腐蚀机理和碱及盐中的不同,腐蚀产物也不同。加入氢复合毒化剂能促进阴极腐蚀,熔盐中阴极腐蚀速率随充氢时间增长而增大。 Intermetallic TiAl in a variety of solutions and molten salt in the cathode charge, when the cathode current is greater than the critical value after the serious corrosion phenomenon will occur, this cathode corrosion rate increases with the cathode current increases linearly, at constant potential The cathodic corrosion rate is much higher than the anodic dissolution rate, the highest cathodic corrosion rate in acidic solution, the second in alkaline solution, and the smallest in salt solution. The cathodic corrosion mechanism in acid is different from that in alkali and salt, and the corrosion products are also different. Hydrogen composite poisoning agent can promote cathodic corrosion, and the cathodic corrosion rate in molten salt increases with the increase of hydrogen charging time.