Lee, Dong Bok Jang, Dong-Hoon Kim, Bong-Su Kim, Kwang-Joong Park, Sung Lee, Jong-Ho Lee, Hae-Weon Lee, Jae Chun 2024-01-20T08:32:06Z 2024-01-20T08:32:06Z 2022-01-25 2014-11 1533-4880 https://pubs.kist.re.kr/handle/201004/126145 Alkali/alkaline-earth borosilicate glass alumina composites containing 10 vol% Al2O3 were prepared for use as solid oxide fuel cell sealants. The effect of heat treatment and Al2O3 addition on the viscosities and electrical conductivities was investigated to improve cyclic sealing performance. Upon a 48-h heat treatment, the viscosity of the glass alumina composites at 750 degrees C was approximately four orders of magnitude higher than that of the base glass owing to the crystallization of the glass in the presence of Al2O3. Heat treatment increased the electrical conductivities of both the base glass and the glass alumina composites. The electrical conductivities of glass alumina composites in the range from 400 degrees C to 550 degrees C were three times higher than those of the base glass regardless of heat treatment. This increase in the conductivities and viscosities by heat treatment was attributed to the devitrification and structural densification of the sealing glass and the partial dissolution of the Al2O3 filler in alkali/alkaline-earth borosilicate sealing glass. English American Scientific Publishers Effect of Alumina Nanofiller on Properties of Heat-Treated Glass Composite Sealants Article 10.1166/jnn.2014.9931 1 Journal of Nanoscience and Nanotechnology, v.14, no.11, pp.8472 - 8475 Journal of Nanoscience and Nanotechnology 14 11 8472 8475 N scie scopus 000344126500064 2-s2.0-84908551814 Chemistry, Multidisciplinary Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Physics, Condensed Matter Chemistry Science & Technology - Other Topics Materials Science Physics Article OXIDE FUEL-CELLS BEHAVIOR SOFC Glass Composites Viscosity Electrical Conductivity Alumina Filler