Abstract
The aim of this study was to investigate the effect of sintering temperature and boron carbide content on wear behavior of diamond cutting segments. For this purpose, the segments contained 2, 5 and 10 wt.% B4C were prepared by hot pressing process carried out under a pressure of 35 MPa, at 600, 650 and 700 ?C for 3 minutes. The transverse rupture strength (TRS) of the segments was assessed using a three-point bending test. Ankara andesite stone was cut to examine the wear behavior of segments with boron carbide. Microstructure, surfaces of wear and fracture of segments were determined by scanning electron microscopy (SEM-EDS), and X-ray diffraction (XRD) analysis. As a result, the wear rate decreased significantly in the 0-5 wt.% B4C contents, while it increased in the 5-10 wt.% B4C contents. With increase in sintering temperature, the wear rate decreased due to the hard matrix.
Highlights
Diamond cutting tools are commonly used for cutting, drilling, grinding, and polishing natural stone [1]
The amount of pores decreased at a high sintering temperature, which lead to high speed solid-state diffusion [14]
The amount of pores decreased at high sintering temperature which leads to high speed solid-state diffusion
Summary
Diamond cutting tools are commonly used for cutting, drilling, grinding, and polishing natural stone [1]. The study reported that WC controlled the weight loss of the matrix with abrasion and increased the wear resistance. There was a 14% rate of increase at the hardness level that has a controlling effect on the rate of wear with the addition of SiC. In this investigation, the effect of boron carbide content, known to be the hardest material with the best mechanical properties after diamond and cubic boron nitride [7,8,9,10], and the sintering temperature on the bending strength and wear behavior of diamond cutting segments were studied
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