Spark plasma sintering of Co–WC cubic boron nitride composites
B Yaman, H Mandal - Materials Letters, 2009 - Elsevier
B Yaman, H Mandal
Materials Letters, 2009•Elsevier25 vol.% cubic boron nitride (cBN) added tungsten carbide (WC) powders containing 6 wt.%
Co (WC–6Co) were densified by spark plasma sintering (SPS) technique under different
experimental conditions and the effect of cBN addition on the microstructure, mechanical
properties and thermal conductivity were investigated. Over 99.5% theoretical density was
achieved for WC–6Co–cBN composites sintered at 1300° C, under 75 MPa pressure for 7.5
min. Under these conditions, cBN→ hBN phase transformation was not observed.
Co (WC–6Co) were densified by spark plasma sintering (SPS) technique under different
experimental conditions and the effect of cBN addition on the microstructure, mechanical
properties and thermal conductivity were investigated. Over 99.5% theoretical density was
achieved for WC–6Co–cBN composites sintered at 1300° C, under 75 MPa pressure for 7.5
min. Under these conditions, cBN→ hBN phase transformation was not observed.
25 vol.% cubic boron nitride (cBN) added tungsten carbide (WC) powders containing 6 wt.% Co (WC–6Co) were densified by spark plasma sintering (SPS) technique under different experimental conditions and the effect of cBN addition on the microstructure, mechanical properties and thermal conductivity were investigated. Over 99.5% theoretical density was achieved for WC–6Co–cBN composites sintered at 1300 °C, under 75 MPa pressure for 7.5 min. Under these conditions, cBN→hBN phase transformation was not observed.
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