Mechanical properties of Ti(C(0.7)N(0.3)) film produced by plasma electrolytic carbonitriding of Ti6Al4V alloy

作者：Li, Xin-Mei; Han, Yong^*

来源：Applied Surface Science, 2008, 254(20): 6350-6357.

DOI：10.1016/j.apsusc.2008.03.172

• plasma electrolytic carbonitriding
• Ti(C(0.7)N(0.3)) thick film
• Ti6Al4V
• adhesion
• wear-resistance

Porous nanocrystalline Ti(C(0.7)N(0.3)) film on Ti6Al4V substrate was prepared by plasma electrolytic carbonitriding (PECN). The film was characterized and analyzed by using a variety of analytical techniques, such as XRD, SEM, EDX, TEM, FESEM, Rockwell C indenter, scratch tester, Vickers microhardness tester and ring-on-block tribometer. The results showed that the film was about 15 mu m thick and its hardness was Hv 2369 at a load of 0.2 N. The adhesion of the film was characterized by Lc and Pc value, and was found to be about 42 N and more than 800 N, respectively. The friction coefficients and wear volume loss of the PECN-treated samples sliding against a steel counterpart were much less than those of the untreated Ti6Al4V. The film possessed a good wear-resistance and antifriction under oil-lubricated condition due to its high hardness, adhesion and fracture toughness. Also, the porous surface morphology of the Ti(C(0.7)N(0.3)) film contributed to the enhanced tribological resistance by promoting the formation of lubricant film and entrapping wear debris.

• 出版日期2008-8-15
• 单位西安交通大学