TY - JOUR
T1 - Oxidation behaviour and high temperature strength of alumina-silicon carbide nanocomposites
AU - Kennedy, T.
AU - Brown, J.
AU - Doyle, J.
AU - Hampshire, S.
PY - 1996
Y1 - 1996
N2 - The processing of Al2O3-SiC nanocomposites has been examined in detail. It has been found that processing in water as opposed to organic solvents leads to a more reproducible nanocomposite. High strengths at room temperature have been obtained with the addition of only 5 vol% nanometric SiC in nanometric α-Al2O3, densified by hot pressing. In the current study, the high temperature strength of alumina-silicon carbide nanocomposite materials prepared in this way has been measured at 1150, 1250 and 1350°C. Oxidation in air and corrosion experiments in a flue gas composed of 80.8% N2, 15% CO2, 4% O2 and 0.2% S2, were also conducted at these temperatures. Al2O3-5 vol% SiC nanocomposite maintained strengths of greater than 550MPa at temperatures up to 1250°C. The gain in mass per unit area during oxidation in air was very low, even after 96 hours at 1350°C.
AB - The processing of Al2O3-SiC nanocomposites has been examined in detail. It has been found that processing in water as opposed to organic solvents leads to a more reproducible nanocomposite. High strengths at room temperature have been obtained with the addition of only 5 vol% nanometric SiC in nanometric α-Al2O3, densified by hot pressing. In the current study, the high temperature strength of alumina-silicon carbide nanocomposite materials prepared in this way has been measured at 1150, 1250 and 1350°C. Oxidation in air and corrosion experiments in a flue gas composed of 80.8% N2, 15% CO2, 4% O2 and 0.2% S2, were also conducted at these temperatures. Al2O3-5 vol% SiC nanocomposite maintained strengths of greater than 550MPa at temperatures up to 1250°C. The gain in mass per unit area during oxidation in air was very low, even after 96 hours at 1350°C.
KW - High Temperature Strength
KW - Nanocomposites
KW - Oxidation
KW - Silicon Carbide-Alumina
UR - http://www.scopus.com/inward/record.url?scp=0029763678&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:0029763678
SN - 1013-9826
VL - 113
SP - 65
EP - 70
JO - Key Engineering Materials
JF - Key Engineering Materials
ER -