| 摘要 |
<p>The method for making porous metals includes the steps of heating a of a powder-shaped salt and metal powder at a temperature lower than a melting temperature of the salt and higher than a melting temperature of metal powder, to thereby melt the metal powder, pressing and molding the mixture so that the fusion metal is filled into the powder-shaped salt, and erupting the salt from the plastic body to thereby obtain porous metal. The porous metal having a simple process and a reduced production cost, has an advantageous competitiveness over any prior methods for use in a sound-absorbing material or a line material of a heat exchanger, in view of a high pore ratio and a specific surface area.</p> |
