Production of aluminum nitride sintered body

Abstract

Abstract PURPOSE:To obtain an aluminum nitride sintered body which has excellent heat conductivity and is dense by molding aluminum nitride powder added with glass powder contg. alkaline earth metallic oxide and boron oxide and thereafter sintering the molded body. CONSTITUTION:The aimed sintered body is obtained by adding 0.1-10wt.% glass powder contg. alkaline earth metallic oxide and boron oxide as a sintering adjuvant to aluminum nitride powder and molding the mixture and thereafter sintering the molded body at >=1650 deg.C in the nonoxidative atmosphere. The utilized aluminum nitride powder is preferably high purity and fine powder. The above-mentioned glass contains alkaline earth metallic oxide and boron oxide as the component and furthermore substance contg. aluminum oxide is preferably utilized. The composition rate of the respective components is preferably regulated to 20-56mol% alkaline earth metallic oxide, 30-80mol% boron oxide and 0-38 mol% aluminum oxide.

Inventors

• 👤 Kiyoshi Saito
• 👤 清 斉藤
• 👤 Yoshikazu Uchiumi
• 👤 良和 内海
• 👤 Masatomi Okumura
• 👤 奥村　正富

Bibliographic Details