| 摘要 |
PURPOSE:To provide the titled lightweight material consisting of Cu, O and N, Ti, Sb or Zn and having a high rate of electric spark machining and superior mechanical strength. CONSTITUTION:This material for an electrode for electric spark machining consists of Cu, O and at least one among N, Ti, Sb and Zn and has superior characteristics such as a high rate of electric spark machining. The material has a structure contg. Cu2O and/or CuO and at least one among TiN, TiO2, Sb2O3 and AnO in a Cu-O solid soln. as the matrix. The amount of at least one among TiN, TiO2, Sb2O3 and ZnO in the Cu-O solid soln. is required to be 0.01-20wt.%. The total amount of O in the Cu-O solid soln. and O present as Cu2O and/or CuO is 0.01-0.15%, preferably about 0.05-0.15%. The material can be manufactured by powder metallurgical processing, dispersion plating, melting or other method.
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