Development of porous castings

Abstract

T h e development of porous castings has become attractive to newlineresearchers in recent years both in scientific and industrial applications In newlinepast any kind of pore in the metal was considered defective but same class of newlinematerials with pores are now getting importance due to their unique newlinecombination of physical and mechanical properties such as high stiffness low newlinespecific weight unusual acoustic properties high impact absorption capacity newlineand good electrical insulating properties newlineSince inception several processes have been developed to introduce newlinelarge size pores almost uniformly distributed in metallic materials The newlinestability of cell structure during foaming process has also been a concern newline newline