Effect of the additive VC on tribological properties of WC-Al2O3 composites. (September 2018)

• Record Type: Journal Article
• Authors: Su, Qingde; Zhu, Shigen; Ding, Hao; Bai, Yunfeng; Di, Ping
• Is Part Of: International journal of refractory metals & hard materials. Volume 75(2018)
• Page Start: 111
• Page End: 117
• Publication Date: 2018-09
• Subjects: WC-Al2O3 composites -- Grain growth inhibitor -- Friction behavior -- Wear resistance; Heat resistant alloys -- Periodicals; Refractory materials -- Periodicals; Metallography -- Periodicals; Alliages réfractaires -- Périodiques; Matériaux réfractaires -- Périodiques; Métallographie -- Périodiques; Heat resistant alloys; Metallography; Refractory materials; Periodicals; Electronic journals; 669.73
• DOI: 10.1016/j.ijrmhm.2018.04.005
• Languages: English
• ISSNs: 0263-4368

Abstract

Abstract: To investigate the impact of vanadium carbide on the tribological properties of WC-Al2 O3 composites, non-lubrication reciprocating ball-on-flat sliding wear experiments were conducted against two different balls of YG6 and Si3 N4 with a load of 80 N and a sliding speed of 0.1 m/s. The friction coefficient evolution and the values, the cross-sectional morphology of the wear tracks, and the wear rates were obtained. A significant improvement on the friction and wear behavior was found with the addition of inhibitor. The examination of worn surface from field emission scanning electron microscope revealed the wear mechanisms, which examined the effect of inhibitor for improving the tribological behaviors. Highlights: The friction coefficient is reduced, and vibration is weakened. The wear resistance is improved. The wear mechanisms transfer from brittle fracture to mild abrasion.