TY - JOUR
T1 - Preparation and properties of MgO-MgAl2O4 composite ceramic
AU - Zhang, Zhenyu
AU - Hu, Min
AU - Chen, Han
AU - Guo, Lucun
N1 - Publisher Copyright:
©, 2015, Chinese Ceramic Society. All right reserved.
PY - 2015/9/1
Y1 - 2015/9/1
N2 - The effects of the component of MgO-MgAl2O4 composite ceramic and the additive on the sintering, mechanical and thermal properties were investigated. The results show that the thermal expansion coefficient of the MgO-MgAl2O4 composite ceramic is the same as that of the anode-supported solid oxide fuel cell (SOFC) material--NiO/YSZ at Al2O3 content of 20%. The compound additives can improve the sintering, mechanical and thermal properties. When the mass ratio of CaO/SiO2 is 2%, the specimen has the lowest porosity and the highest flexural strength. However, the optimal thermal shock resistance occurs at the mass ratio of CaO/SiO2 of 8%. The thermal expansion coefficient of MgO-MgAl2O4 composite ceramic is not related to the addition of CaO/SiO2. There is little difference between the bond condition and the strength of the composite member with a content of 20% Al2O3 and 6% CaO/SiO2 after 20 times of air cooling circulation at 600℃ in the presence of NiO/YSZ.
AB - The effects of the component of MgO-MgAl2O4 composite ceramic and the additive on the sintering, mechanical and thermal properties were investigated. The results show that the thermal expansion coefficient of the MgO-MgAl2O4 composite ceramic is the same as that of the anode-supported solid oxide fuel cell (SOFC) material--NiO/YSZ at Al2O3 content of 20%. The compound additives can improve the sintering, mechanical and thermal properties. When the mass ratio of CaO/SiO2 is 2%, the specimen has the lowest porosity and the highest flexural strength. However, the optimal thermal shock resistance occurs at the mass ratio of CaO/SiO2 of 8%. The thermal expansion coefficient of MgO-MgAl2O4 composite ceramic is not related to the addition of CaO/SiO2. There is little difference between the bond condition and the strength of the composite member with a content of 20% Al2O3 and 6% CaO/SiO2 after 20 times of air cooling circulation at 600℃ in the presence of NiO/YSZ.
KW - Periclase-magnesium aluminate spinel
KW - Solid oxide fuel cell
KW - Structural materials
KW - Thermal expansion coefficient
UR - http://www.scopus.com/inward/record.url?scp=84943579075&partnerID=8YFLogxK
U2 - 10.14062/j.issn.0454-5648.2015.09.15
DO - 10.14062/j.issn.0454-5648.2015.09.15
M3 - 文章
AN - SCOPUS:84943579075
SN - 0454-5648
VL - 43
SP - 1266
EP - 1270
JO - Kuei Suan Jen Hsueh Pao/Journal of the Chinese Ceramic Society
JF - Kuei Suan Jen Hsueh Pao/Journal of the Chinese Ceramic Society
IS - 9
ER -