| 摘要 |
PURPOSE:To reduce the porosity of composite ceramics consisting of aluminum nitride and a boron compd. and to enhance the heat conductivity and mechanical strength. CONSTITUTION:This composite ceramics constitute 5-40% of area of a grain boundary phase based on at least one of compds. of groups IIa and IIIa metals of the periodic table and contg. aluminum nitride and a boron compd. in a dispersed state. |
