| 摘要 |
PURPOSE:To obtain an electrode for electrolytic lapping excellent in the durability and corrosion-proof property, by means of using sintering bodies containing the powder of IV group, V group or a transition element of IV group or boride of lanthanum. CONSTITUTION:A designated electrode is obtained by means of sintering at 700- 1500 deg.C in vacuum from several minutes to several hr., after the press-forming, by means of adding 1-20wt% of the powders of clay minerals of a feldspar etc. a glass frit, or a low melting pt. metal against the powder of a boride on the powder of the boride of Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W or La as a binding agent. In a case when a binding agent is not used, a common powder metallurgy forming method is used, and a sintering body is obtained at about 1700-2300 deg.C in vacuum by a hot press. |
