| 摘要 |
<p>PROBLEM TO BE SOLVED: To obtain a porous metal excellent in workability, formability, machinability, etc., by melting and solidifying a metal, having an eutectic point in the metal-gas phase diagram under a uniform pressure gas atmosphere under a pressurized gas atmosphere. SOLUTION: A metal having an eutectic point in the metal-gas phase diagram under a uniform pressure gas atmosphere, (e.g. Ag-O), is placed in a melting crucible 2 in a high pressure gas vessel of <=about 20atm. As the gas, hydrogen, oxygen, inert gas, etc., are used. This crucible 2 is heated under pressure by means of a high frequency coil 1 for melting to melt the metal, and the resultant molten metal is cast via an opening/closing valve 3 in a mold 4 cooled by means of a water cooling part 5, followed by solidification by cooling. By this method, a porous metal 6, useful for lightweight structural material, aerospace and aircraft material, catalyst material, etc., can be obtained.</p> |
