Use electrostatic die/di wall lubricating conversion the metal ceramic device and the manner

摘要

PROBLEM TO BE SOLVED: To provide a metal composite part having high final density in environmental safety by frictional-electrically charging a lubricant to a specific electric charge-mass ratio and electrostatically attracting it to the surface of a die wall. ;SOLUTION: A lubricant is frictional-electrically charged to an electric charge-mass ratio higher than 0.2 μC/g, and the resultant charged lubricant is electrostatically attracted to the surface of a die wall specifying a cavity. This cavity is filled with a metal powder composition, and this metal powder composition is compacted to manufacture an unsintered green compact. Because the environmental danger due to the use of a dispersed dry lubricant containing volatile solvent can be removed and the necessity of the incorporation of internal lubricant can be obviated, the metal composite part having high final density and strength can be obtained.;COPYRIGHT: (C)1996,JPO