TY - JOUR
T1 - High-temperature properties of a silicon nitride/boron nitride nanocomposite
AU - Kusunose, Takafumi
AU - Sung, Rak Joo
AU - Sekino, Tohru
AU - Sakaguchi, Shugi
AU - Niihara, Koichi
N1 - Funding Information:
This study was supported by Industrial Technology Research Grant Program in 2001 from New Energy and Industrial Technology Development Organization (NEDO) of Japan and the Tokuyama Science Foundation in 2003.
PY - 2004/5
Y1 - 2004/5
N2 - Hexagonal graphitic BN (h-BN) is interesting as a second phase for high-temperature structural ceramics because it has the same crystal structure as graphite, for which fracture strength and Young's modulus increase with increased temperature. In this study, high-temperature mechanical properties of Si3N4/BN nanocomposite were evaluated to clarify the effect of fine h-BN particles at elevated temperatures. As a result, we found that high-temperature strength and hardness of the nanocomposite were maintained up to high temperatures; also, its Young's modulus increased gradually, concomitant with elevated temperatures up to 1400 °C. Finally, these properties were compared with those of monolithic Si3N4 and Si3N4/BN microcomposite.
AB - Hexagonal graphitic BN (h-BN) is interesting as a second phase for high-temperature structural ceramics because it has the same crystal structure as graphite, for which fracture strength and Young's modulus increase with increased temperature. In this study, high-temperature mechanical properties of Si3N4/BN nanocomposite were evaluated to clarify the effect of fine h-BN particles at elevated temperatures. As a result, we found that high-temperature strength and hardness of the nanocomposite were maintained up to high temperatures; also, its Young's modulus increased gradually, concomitant with elevated temperatures up to 1400 °C. Finally, these properties were compared with those of monolithic Si3N4 and Si3N4/BN microcomposite.
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U2 - 10.1557/JMR.2004.0192
DO - 10.1557/JMR.2004.0192
M3 - Article
AN - SCOPUS:3142783011
VL - 19
SP - 1432
EP - 1438
JO - Journal of Materials Research
JF - Journal of Materials Research
SN - 0884-2914
IS - 5
ER -