| 摘要 |
PURPOSE:To remove voids and contrive the improvement of the strength of a ceramic composition by a method wherein Si3N4 is further added in a suitable amount to a substance with Si added in a suitable amount to a composite ceramics made of TiC and Al2O3. CONSTITUTION:Si is added in 0.05-5pts.wt. to the 100pts.wt. of the composite ceramics made of TiC at 20-55wt% and the remnant Al2O3. Thereby, the strength of interface between TiC and Al2O3 particles increases. Next, Si3N4 is added thereto in 5-30pts.wt. The addition thereof leads the remarkable improvement of the wear resistance of this ceramic composition. Further, one or more kinds of Fe, Cr, and W are added thereto in 0.05-5pts.wt. This manner enables the crystals of Al2O3 and TiC particles to be stronger. |
