| 摘要 |
PROBLEM TO BE SOLVED: To provide metal powder having regulated oxygen concentration for controlling the surface wettability of the metal powder, the viscosity in melting the metal powder, the sinterability of the metal powder particles, etc., owing to the increased oxygen concentration of the metal powder. SOLUTION: In the metal powder with regulated oxygen concentration, oxygen is forcedly supplied to an atomization medium when manufacturing the metal powder by gas atomization to regulate oxygen content in the gas-atomized metal powder to 300-3,000 ppm. Further, in the metal powder with regulated oxygen concentration, heat treatment is applied to the above metal powder to regulate oxygen content in the metal powder to 3,000-10,000 ppm.
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