METHOD CAPABLE OF MANUFACTURING OPEN-CELL TYPE METAL FOAM USING METAL HAVING HIGHER FUSION POINT BY SINTERING PROCESS AND MANUFACTURING CERAMIC FOAM SUCH AS SiC AND ALUMINA IN CASE OF APPLICATION OF VARIOUS BINDERS INSTEAD OF LIQUID URETHANE RESIN

摘要

PURPOSE: To provide a method for manufacturing open-cell type metal foam by metal powder sintering process, wherein the method is capable of easily manufacturing open-cell type metal foam due to less facility cost and simpler operation process compared with conventional casting, powder metallurgy and plating processes. CONSTITUTION: The method for manufacturing open-cell type metal foam by metal powder sintering process comprises the steps of: preparing a mixed slurry by adding polyvinyl alcohol to metal powder; drying the mixed slurry inserted into polyurethane foam after putting cut polyurethane foam into the mixed slurry such that the mixed slurry is inserted into polyurethane foam; dipping the mixed slurry contained polyurethane foam into liquid phase urethane resin, uniformly coating the metal powder on the liquid phase urethane resin coated polyurethane foam, and drying the metal powder covered polyurethane foam; putting the metal powder coated polyurethane foam containing the mixed slurry into a furnace, and burning the metal powder coated polyurethane foam at 500 deg.C for 30 minutes; and sintering a remained shape of the burnt metal powder coated polyurethane foam in an electric furnace.