Sintered composite abrasive materials, a process for its production and its use
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United States of America Patent
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Mar 16, 1993
Grant Date -
N/A
app pub date -
Nov 8, 1991
filing date -
Dec 7, 1990
priority date (Note) -
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Abstract
Sintered composite abrasive material useful in abrasives (grinding wheels, abrasive discs and paper, etc.) and cutting tools, comprising an .alpha.-Al.sub.2 O.sub.3 matrix of sub-micron crystallite size made by sol-gel processing with a dispersed phase therein of mechanically resistant material, preferably essentially isotropic grains, added directly to the sol or gel stage of matrix formation.
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