Sol gel abrasive containing reduced titania and process for its preparation

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 dri...

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Bibliographische Detailangaben
Hauptverfasser:	GEISE, MATTHEW R, SEIDER, ROBERT J
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ADHESIVES ARTIFICIAL STONE CEMENTS CERAMICS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE DYES LIME, MAGNESIA MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS PAINTS POLISHES REFRACTORIES SLAG TREATMENT OF NATURAL STONE
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Beschreibung
Zusammenfassung:	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 DEG C to about 1500 DEG 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 DEG 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.