Tribological Behavior of Ti(C, N)-Based and Functionally Gradient Ti(C, N)-Based Cermets

Abstract:

Ti(C, N)-based cermet and functionally gradient Ti(C, N)-based cermet were prepared by vacuum sintering and post surface heat-treatment in nitrogen, respectively. Tribological behaviors of obtained cermets were comparatively studied. Dry sliding wear and cutting test were conducted against quenched medium carbon steel. It was found that a graded structure formed and the surface hardness of functionally gradient Ti(C, N)-based cermet was improved. Friction coefficients of both cermets decreased with the increase of the sliding speed. The friction coefficient of Ti(C, N)-based cermet was lower than that of functionally gradient Ti(C, N)-based cermet at the conditions of higher sliding speed and higher load. The cutting test demonstrated that Ti(C, N)-based cermet exhibited better cutting performance and higher wear resistance than the cemented carbide YT15, cermet TN20 and functionally gradient Ti(C, N)-based cermet, while the functionally gradient Ti(C, N)-based cermet exhibited a similar performance as YT15 and TN20.

• Periodical: Advanced Materials Research (Volumes 97-101)
• Pages: 1097-1103
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.97-101.1097
• Online since: March 2010
• Authors: Zeng Min Shi, Ping Feng, Wen Jun Liu, Yong Zheng, Jian Li
• Keywords: Cutting, Functionally Gradient Structure, Ti(c,n)-based Cermet, Tribological Behaviour

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