Manufacturing process for sintered ceramic body for cutting tools
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United States of America Patent
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May 21, 1985
Grant Date -
N/A
app pub date -
Jul 18, 1980
filing date -
Jul 20, 1979
priority date (Note) -
Expired
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Abstract
A sintered ceramic body for cutting tools having a residual porosity of not exceeding 0.2% by volume and mean crystal grain size of not exceeding 2.mu. is obtained by sintering a mixture substantially consisting of 70-95% by volume alumina and the balance of titanium nitride and Zr-containing component(s) such as Zr, ZrC and/or ZrN wherein the volumetric ratio of TiN/Zr-containing component(s) ranges 95/5-50/50 under the pressure application of 50-3000 Kg/cm.sup.2. The sintering may be carried out by hot pressing or HIP process.
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