| 摘要 |
PURPOSE:To obtain a low-temperature sintering ceramic having low sintering temperature to enable sintering together with an electrode material such as Cu, Ni and Ag, by combining a glass layer and a number of crystal particles including aluminum nitride crystal particles having aluminum oxide layer on the surface. CONSTITUTION:Aluminum nitride powder is mixed with pure water, boiled and separated by suction filtration to obtain aluminum nitride powder having aluminum oxide layer on the surface. The aluminum nitride powder coated with aluminum oxide is mixed with specific amounts of CaO-B2O3-SiO2 glass powder, polyvinyl butyral resin, DBP, acetone and oleic acid and stirred in a ball mill to obtain a homogeneous slurry. The objective low-temperature sintering ceramic composed of AlN crystal particles 1 having Al2O3 layer 2 and a glass layer 3 can be produced by heat-treating and calcining the slurry. The ceramic exhibits thermal conductivity close to that of high-temperature sintering alumina substrate in addition to the above-mentioned characteristics. |
