| 摘要 |
PURPOSE:To obtain a method for synthesizing powder to be sintered which can desirably obtain fine powder having a narrow particle size distribution and a small irregularity in characteristics by synthesizing it by using zirconia, partially stabilized zirconia or alumina as an adding material. CONSTITUTION:CoO and NiO or NiO are used as basic composition. When nonmagnetic board material powder for a magnetic head containing 100% of the basic composition and 0.1-7wt.% of zirconia or partially stabilized zirconia is manufactured through the steps of mixing starting material, temporarily baking it and pulverizing it as unit operations, only the basic composition part is pulverized. During a period from immediately before a pulverizing ending time to a pulverizing ending time, after the pulverizing is finished or in the case of slurry forming of the powder for subsequent molding, the board material powder for the head in which the zirconia or the partially stabilized zirconia having a mean particle size of 0.05-3mum is added is manufactured by this method. |
