Patent ID: 8039086

Claim:
A bonding material composition comprising two or more fillers and a matrix, the fillers including: at least one or more fillers selected from the group consisting of cordierite, beta-spodumene, amorphous silica, aluminum titanate, and zirconium phosphate; at least one or more fillers selected from the group consisting of silicon carbide, alumina, quartz, aluminum nitride, B 4 C, mullite, SiAlON, silicon nitride, zirconia, cordierite, aluminum titanate, zirconium phosphate, boron nitride, talc, mica, and glass flake, wherein the fillers are 10-95% by volume of the bonding material composition, the matrix is 5-90% by volume of the bonding material, and a volume ratio of a first filler of the two or more fillers to a second filler of the two or more fillers is 5:95 to 95:5; and at least one of the fillers and the matrix is selected so as to have a Young's Modulus after hardening not less than 20% of that of articles to be bonded, and an average linear coefficient of thermal expansion after hardening not more than 70% of that of the articles to be bonded.