Characteristics of TiAl-Doped DLC/TiAlN/TiN Multilayered Coatings Synthesized by Cathodic Arc Evaporation
The combinations of TiAl-doped DLC and TiAlN/TiN layers were designed to deposit on the tool steels using cathodic arc evaporation in a continuously single batch process. The economic advantage in depositing the combined coating in one production scale of PVD system is of practical importance. The TiAl-doped DLC as lubricant coatings were synthesized by using arc plasma sources mounted with Ti50Al50-target to emit high energy ion plasma to activate the decomposition of acetylene reactive gases. The results show that the TiAl-doped DLC and TiAlN/TiN combined coatings retained lower friction coefficient at approximately 0.15 during the steady-state sliding. The lubricity and wear resistance of TiAl-doped DLC/TiAlN/TiN coatings is then demonstrated to potentially be applied to the cutting tools with no lubricants.
Jang Hyun Sung, Chan Gyu Lee, Yong Zoo You, Young Kook Lee and Jae Young Kim
C. L. Chang et al., "Characteristics of TiAl-Doped DLC/TiAlN/TiN Multilayered Coatings Synthesized by Cathodic Arc Evaporation", Solid State Phenomena, Vol. 118, pp. 247-256, 2006