Method for manufacturing metal powder

A method for manufacturing a highly-crystallized metal powder comprising:

• preparing a raw material powder containing two or more metal elements, which are constituents of an alloy powder to be produced, at a substantially constant compositional ratio in individual particles of the raw material powder;
• collecting the raw material powder;
• dispersing the collected raw material powder in a carrier gas;
• ejecting the carrier gas having the raw material powder dispersed therein into a reaction vessel through a nozzle under the condition V/S>600, where V is the flow rate of the carrier gas per unit time (liter/min) and S is the cross-sectional area of the nozzle opening part (cm2);
• and
• producing the metal powder in the form of the alloy powder by heating the raw material powder at a temperature which is higher than the decomposition temperature of the raw material powder and not lower than (Tm−200)° C. where Tm (° C.) is the melting point of the alloy to be produced, in a state where the raw material powder is dispersed in the gas phase in the reaction vessel at a concentration of 10 g/liter or less.