0293163-A2 is referenced by 78 patents and cites 4 patents.

Ceramic abrasive grits are formed by an impregnation process that involves preparing an alumina hydrate sol, drying the sol to form a porous solid, crushing the solid to produce particles, calcining the dried particles, preparing a mixture of an additive metal oxide or its precursor in a liquid vehicle, impregnating the mixture into the calcined particles, drying the impregnated particles, calcining the dried impregnated particles, and firing the particles to produce ceramic abrasive grits. The concentration of the modifying additive metal is greater at or near the surface of the grit than at the interior of the grit.

Title
Abrasive grits formed of ceramic, impregnation method of making the same and products made therewith.
Application Number
EP19880304678 19880524
Publication Number
0293163 (A2)
Application Date
May 24, 1988
Publication Date
November 30, 1988
Inventor
Wood William P C O Minnesota M
Assignee
Minnesota Mining & Mfg
US
IPC
C09K 03/14
C04B 35/10
C01F 07/02
C09K 03/14
C04B 41/81
C04B 41/45
C04B 35/622
C04B 35/111
C04B 35/10
C01F 07/00
B24D 11/00
B24D 03/00
C09K 03/14
C04B 41/81
C04B 41/45
C04B 35/624
C04B 35/111
C04B 35/10
C01F 07/44
C01F 07/02
B24D 11/00
B24D 03/00
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