TY - JOUR
T1 - Synthesis of dense forms of B-C-N system using chemical-vapor-deposition/high-pressure process
AU - Onodera, A.
AU - Matsumoto, K.
AU - Mirai, T.
AU - Goto, T.
AU - Motoyama, M.
AU - Yamada, K.
AU - Kohzuki, H.
N1 - Funding Information:
This work was supported by the grant in aid for scientific research No. 01470068 from the Ministry of Education, Science, and Culture, Japan.
PY - 2001
Y1 - 2001
N2 - Composites made up of boron, carbon, and nitrogen were studied using a combination of chemical vapor deposition (CVD) and high pressure (HP) techniques. The CVD/HP process comprised deposition of Cx(BN)1-x composites where x = 0.03 or 0.8, followed by heat treatment of the deposited samples under pressures from 6 to 10 GPa using an octahedral-anvil apparatus. Also a sample prepared by nitriding of boron and carbon to compose x = 0.5 was studied up to 16 GPa. A diamond-type solid solution was obtained after the C0.8(BN)0.2 sample was treated at 10 GPa and 1600 °C or at 8 GPa and 1700 °C whereas the C0.03(BN)0.97 and C0.5(BN)0.5 samples exhibited decomposition into carbon and BN under all the P, T conditions studied. Sintered compacts consisting primarily of the cubic BN and carrying hardness with a maximum value of 54 GPa were obtained from C0.03(BN)0.97.
AB - Composites made up of boron, carbon, and nitrogen were studied using a combination of chemical vapor deposition (CVD) and high pressure (HP) techniques. The CVD/HP process comprised deposition of Cx(BN)1-x composites where x = 0.03 or 0.8, followed by heat treatment of the deposited samples under pressures from 6 to 10 GPa using an octahedral-anvil apparatus. Also a sample prepared by nitriding of boron and carbon to compose x = 0.5 was studied up to 16 GPa. A diamond-type solid solution was obtained after the C0.8(BN)0.2 sample was treated at 10 GPa and 1600 °C or at 8 GPa and 1700 °C whereas the C0.03(BN)0.97 and C0.5(BN)0.5 samples exhibited decomposition into carbon and BN under all the P, T conditions studied. Sintered compacts consisting primarily of the cubic BN and carrying hardness with a maximum value of 54 GPa were obtained from C0.03(BN)0.97.
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U2 - 10.1023/A:1004832807084
DO - 10.1023/A:1004832807084
M3 - Article
AN - SCOPUS:0034832126
SN - 0022-2461
VL - 36
SP - 679
EP - 684
JO - Journal of Materials Science
JF - Journal of Materials Science
IS - 3
ER -