BigPatents India

The present invention relates to low density foam ceramic with non porous strut having porosity greater than 92%, improved mechanical strength, and pore size in the range of 8 to 30 ppi and a process for preparation of the said foam ceramic by mixing carbohydrate resin to ceramic powder slurry, obtaining ceramic power filled resin, drying it in air oven at a temperature ranging from 60 degree centigrade to 120 degree centigrade , cutting the foamed ceramic thus obtained into a desired shape, debinderising of foamed ceramic by heating up to 600 degree centigrade to remove the organics, followed by sintering up to a temperature of 1700 degree centigrade , holding at this temperature for a period of 1hr to 4 hr to obtained the required low density foam ceramic with non porous strut.