TY - JOUR
T1 - Spark plasma sintering of cBN(core)/SiO 2 (shell) powder prepared by rotary chemical vapor deposition
AU - Zhang, Jianfeng
AU - Katsui, Hirokazu
AU - He, Zhenhua
AU - Goto, Takashi
PY - 2014/9
Y1 - 2014/9
N2 - SiO 2 nanolayer coated cubic boron nitride (cBN), cBN(core)/SiO 2 (shell) powder, was prepared by rotary chemical vapor deposition. The cBN/SiO 2 powder was densified by spark plasma sintering at 1873K for 0.3ks. The hexagonal boron nitride (hBN) phase was not observed in the cBN-SiO 2 composites, indicating that the SiO 2 nanolayer depressed the phase transformation from cBN to hBN. The relative density of cBN-SiO 2 increased with increasing SiO 2 content (CSiO2). The highest hardness of the cBN-SiO 2 composite was 17.5GPa at CSiO2=38 wt% and a load of 0.98N.
AB - SiO 2 nanolayer coated cubic boron nitride (cBN), cBN(core)/SiO 2 (shell) powder, was prepared by rotary chemical vapor deposition. The cBN/SiO 2 powder was densified by spark plasma sintering at 1873K for 0.3ks. The hexagonal boron nitride (hBN) phase was not observed in the cBN-SiO 2 composites, indicating that the SiO 2 nanolayer depressed the phase transformation from cBN to hBN. The relative density of cBN-SiO 2 increased with increasing SiO 2 content (CSiO2). The highest hardness of the cBN-SiO 2 composite was 17.5GPa at CSiO2=38 wt% and a load of 0.98N.
KW - Cubic boron nitride (cBN)
KW - Rotary chemical vapor deposition
KW - Spark plasma sintering
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U2 - 10.1016/j.jascer.2014.04.001
DO - 10.1016/j.jascer.2014.04.001
M3 - Article
AN - SCOPUS:84934764118
VL - 2
SP - 204
EP - 209
JO - Journal of Asian Ceramic Societies
JF - Journal of Asian Ceramic Societies
SN - 2187-0764
IS - 3
ER -