C - Chemistry – Metallurgy – 09 – K
Patent
C - Chemistry, Metallurgy
09
K
C09K 3/14 (2006.01) C04B 35/111 (2006.01) C04B 35/119 (2006.01) C04B 35/624 (2006.01)
Patent
CA 2256856
A method for forming a sol gel abrasive which comprises forming a gelled dispersion wherein the solids content in the dispersion comprises from 92 to 99 weight percent alumina or alumina precursor and 1 to 8 weight percent of a titanium oxide or titanium oxide precursor. The gelled dispersion is dried to form a dried gel and is heated to a temperature of from about 1225°C to about 1500°C. The heating is done in a gas atmosphere in a reducing environment to create a reduced titanium oxide in the finished abrasive product. The temperature range for a ten minute heating time may be determined by the formula °C = 1425 ~75-20Tc where Tc is concentration of titanium oxide in weight percent solids. The product of the invention is a sol gel abrasive containing a reduced titanium oxide. The invention also includes the novel sol gel grain made by the method of the invention.
Geise Matthew R.
Seider Robert J.
Gowling Lafleur Henderson Llp
Washington Mills Electro Minerals Corporation
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