Syntheses, Structure, Properties, and Prospective Application of Gas-Eutectic Porous Materials

摘要

The paper summarizes published data and also deals with technology, structure, applications, and properties of gasars - new porous materials based on gas-eutectic reaction in metal-gas systems. The method consists of melting a material in any gas atmosphere containing hydrogen, oxygen, nitrogen or those mixes and solidifying under controlled thermodynamic and kinetic conditions. The materials produced by this method, have a monolithic matrix and pores of proper geometric shapes, providing to gasars higher strength, plasticity, thermal and electrical conductivities as compared with those of other porous materials. Gasar is recommended for prospective application as filters, bearings, metal-matrix composites and etc.