Ceramic raw material composition, and a ceramic substrate circuit element

文件类型：PDF文档
文件大小：433K
There is provided a ceramic material composition advantageously used as a material for a ceramic substrate (1) containing a resistor (8) disposed therein, for example, an isolator. A ceramic material composition including 10 to 45 percent by weight of a BaO-TiO 2 -ReO 3/2 ceramic composition, the ceramic composition being represented by xBaO-yTiO 2 -zReO 3/2 (wherein x, y, and z each represent a mole percent, 8 ‰ x ‰ 18, 52.5 ‰ y ‰ 65, and 20 ‰ z ‰ 40, and x + y + z = 100; and Re represents a rare-earth element); 5 to 40 percent by weight of alumina; and 40 to 65 percent by weight of a borosilicate glass composition containing 4 to 17.5 percent by weight of B 2 O 3 , 28 to 50 percent by weight of SiO 2 , 0 to 20 percent by weight of Al 2 O 3 , and 36 to 50 percent by weight of MO (wherein MO represents at least one compound selected from CaO, MgO, SrO, and BaO), wherein the total content of the BaO-TiO 2 -ReO 3/2 ceramic composition and alumina is 35 percent by weight or more.