| 摘要 |
PURPOSE:To enable adaptation to a wide range of coefft. in thermal expansion of various magnetic heads made of an amorphous magnetic body, etc., and to improve specular finishability by specifying the amts. of NiO, BaO and TiO and ratio of BaO to TiO2. CONSTITUTION:This porcelain compsn. for a magnetic head consists of, by mol, 40-85% NiO, 7.5-30% BaO and 7.5-30% TiO2 in <=1.2 ratio of BaO to TiO2, is adaptable to a wide range of coefft. in thermal expansion of various magnetic heads made of an amorphous magnetic body, etc., and has superior specular finishability and satisfactory porosity. |
