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Title: Sintering of cubic boron nitride under high pressures and temperatures in the presence of boron carbide as the binding material
Authors: Singhal, S K
Singh, B P
Issue Date: Aug-2005
Publisher: CSIR
IPC Code: C01B35/08, C01B31/36
Abstract: Sintering of cubic boron nitride (cBN) was carried out by subjecting fine powders of cBN to high pressures and temperatures (P = 50-60 kb, T = 1200-1500°C ) in the presence of boron carbide as the main binding material together with a small amount of aluminium nitride. The composites were characterized by X-ray diffraction, scanning electron microscopy, FTIR, Raman Spectroscopy and microhardness measurements. Best composites with a maximum microhardness of about 3700 kg/mm2 were obtained at around 50 kb, 1450°C using 75 wt% of cBN in the mixture. No peaks due to hexagonal boron nitride were observed in the XRD patterns.
Page(s): 325-330
ISSN: 0975-1017 (Online); 0971-4588 (Print)
Appears in Collections:IJEMS Vol.12(4) [August 2005]

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