Comparison of the wear behaviors of advanced and conventional cemented tungsten carbides. (February 2019)

• 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 79(2019)
• Page Start: 18
• Page End: 22
• Publication Date: 2019-02
• Subjects: Dry sliding wear -- WC-15%Al2O3 -- Cemented carbide -- Wear behavior; 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.2018.10.019
• Languages: English
• ISSNs: 0263-4368

Abstract

Abstract: In this study, the wear behaviors of an advanced WC-15%Al2 O3 composite (WA15) were compared with a commercially available WC-8%Co cemented carbide (YG8). In order to evaluate and compare their anti-wear performance, the ball-on-flat dry sliding wear tests were conducted under different loads using a reciprocating tribometer. The cross sectional profiles of the wear scar on both materials were drawn using a surface profilometer. The volume loss and the wear rates were calculated depend on the cross sectional area (CSA) of the wear scar. The load-dependent wear results suggested that the anti-wear performance of WA15 was superior to YG8. The examination of worn surfaces from field emission scanning electron microscopy showed that the wear mechanisms of surface damage were mainly brittle fracture and plastic deformation. Highlights: Wear loss and wear mechanisms were compared. The critical load causing wear transition was found. WC-15%Al2 O3 exhibited better anti-wear performance.