| 摘要 |
<p>A porous ceramic mainly comprising silicon carbide or nitride, having strength, heat resistance and thermal shock resistance superior to the conventional products, containing many micropores wherein the pore diameter is 1 νm or less and the porosity is 35% or above, and having a flexural strength of 100 MPa or above. The production process comprises mixing a silicon oligomer capable of yielding silicon carbide or nitride by firing with powdery silicon carbide, silicon nitride or other ceramic each having an average particle diameter of 1.0 νm or less, forming the resultant mixture, and sintering the formed mixture in a suitable atmosphere at 1,200 °C or above.</p> |
