| 摘要 |
PROBLEM TO BE SOLVED: To stabilize yield at the time of compacting and to stabilize production yield when a CaO-TiO2 -NiO non-magnetic substrate for a magnetic head is produced. SOLUTION: Granulated powder having 0.3-4.0wt.% water content is produced using a binder and powder obtd. by weighing powders of CaCO3 , TiO2 and NiO by a prescribed amt. each, wet-mixing them, calcining and pulverizing the resultant mixture. The granulated powder is compacted and fired to produce the objective non-magnetic substrate having a compsn. consisting of 15-45mol% CaO, 40-80mol% TiO2 and 5-30mol% NiO. |
