Effect of feedstock diamond powder property on microstructure and mechanical properties of polycrystalline diamond compacts. (February 2023)

• Record Type: Journal Article
• Authors: Ni, Peishen; Zhao, Zhe; Yang, Wenxin; Deng, Xin; Wu, Shanghua; Qu, Zhi; Jin, Feng
• Is Part Of: International journal of refractory metals & hard materials. Volume 111(2023)
• Publication Date: 2023-02
• Subjects: Polycrystalline diamond compact -- Specific surface area -- Wear resistance -- Residual stress -- HPHT process; 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.2023.106102
• Languages: English
• ISSNs: 0263-4368

Abstract

Abstract: Polycrystalline diamond compact (PDC) is used widely for machining, petroleum drilling, and mining. Up until now, the effect of feedstock diamond powder property, especially the specific surface area of diamond powder, has rarely been investigated on the mechanical property of PDCs. In this study, diamond powders with different specific surface areas have been employed for the synthesizing of PDCs using high-pressure high-temperature (HPHT) process. The research shows that the microstructure, residual stress, and especially the wear resistance of PDCs were significantly affected by the specific surface area of diamond powders. Compared with the ordinary diamond powders, the diamond powders with higher specific surface area promote the formation of diamond-diamond bonding more significantly during HPHT process and contribute to the noticeably higher wear resistance of PDCs. Highlights: Higher specific surface area of diamond powder promotes more diamond-diamond bonding. Higher specific surface area of diamond powder leads to more compressive stress of PDCs. Higher specific surface area of diamond powder improves wear resistance of PDCs. Diamond powders with higher specific surface area should be highly valued for PDCs.