| 摘要 |
PURPOSE:To easily and efficiently produce a high strength porous SiC sintered body having uniform pore diameter and pore distribution and useful as a microwave-absorbing heating element, a high grade porous lightweight furnace material, etc. CONSTITUTION:The surfaces of org. spheres are coated with a powdery mixture of 75-99wt.% SiC with 25-1wt.% glass and the coated spheres are press-molded and fired. By this method, a molded body contg. uniformly distributed org. spheres can be formed and a high strength porous SiC sintered body having uniform pore distribution as well as uniform pore diameter and also having narrow density distribution is obtd. By combination with the glass, the sinterability of the SiC is improved and the strength of the resulting sintered body is further enhanced. When the sintered body is used as a microwave- absorbing heating element, heating to a uniform temp. is attained by satisfactory heating property. |
