（Ti、AI）N、TiN镀层的冷热疲劳性能研究

STUDY ON THERMAL FATIGUE OF(Ti,Al)N,TiN COATINGS

研究了多弧离子镀（Ｔｉ，Ａｌ）Ｎ镀层的冷热疲劳性能并与ＴｉＮ镀层进行了比较，结果表明，（Ｔｉ，Ａｌ）Ｎ镀层具有高的热疲劳抗力和高温抗氧化能力，在７００℃以下的热循环过程中，镀层的热疲劳过程是由热应力的作用下膜层的开裂及基体材料的氧化所引起的，试件的表面质量对镀层的热疲劳性能有重要的影响。

Thermal fatigue property of(Ti,Al)N,TiN platting prerared by Multi Arc Ion Platting was studied.The results show that(Ti,Al)N possesses higher oxidation resistance and thermal fatigue prorerty,The thermal failure process of(Ti,Al)N under 700℃ was caused by cracking of coating layer and oxidation of matrix metal,The smoothness of matrix metal is an important factor for the thermal fatigue behaviour of coatings.