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Effect of the cBN content and sintering temperature on the transverse rupture strength and hardness of cBn/diamond cutting tools

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Author(s): Kır Durmuş | Islak Serkan | Çelik Halis | Çelik Ertuğrul

Journal: Science of Sintering
ISSN 0350-820X

Volume: 44;
Issue: 2;
Start page: 235;
Date: 2012;
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Keywords: cBN/diamond cutting tools | Hot-pressing | TRS

ABSTRACT
The aim of this work was to investigate the effect of cBN content and sintering temperature on the transverse rupture strength (TRS) of cBN/diamond cutting tools produced by hot pressing. The segments containing different cBN content were manufactured under 35 MPa pressure at 600, 650 and 700°C with a 3 minutes sintering time. The TRS of segments were determined using three-point bending test. Microstructure and phase composition of fracture surface of segments were determined by scanning electron microscopy (SEM), and X-ray diffraction (XRD) analysis. The obtained results show that the TRS of the segments with cBN were higher than that of the segments with diamond.
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