| 摘要 |
PROBLEM TO BE SOLVED: To modify non-dense metal powder of high heat shrinkage into dense metal powder of low heat shrinkage without causing much changes in the particle size and particle size distribution and to provide metal powder suited to the formation of a ceramic capacitor inner electrode. SOLUTION: In the process for the treatment of metal powder for improving the density of the metal powder, heat treatment is applied to the metal powder at a temperature not higher than the melting temperature after a coating of the oxide, hydroxide, or carbonate of an alkaline earth metal is formed on the surface of the particles of the metal powder. The resultant heat treated article is subjected to leaching treatment with acid and then to the separation of solid to collect the metal powder. It is desirable that Ag powder, Ni powder, Cu powder, Pd powder, or Ag-Pd powder for ceramic capacitor inner electrode is used as the metal powder.
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