... furnace, and using a special broken treatment technique.3. Semi-brittle corundum is characterized by high temperature resistance, corrosion ... apparent porosity and stable thermal stability. Main performance:1. Semi-brittle fused alumina has good roughness and self – sharpening. ... are superior to brown, white, zirconia, monocrystalline.3. Semi-brittle corundum is applied in coarse grinding that can ...