Norton Company

Saint-gobain/norton Industrial Ceramics Corporation

David Rostoker

Carole J Markhoff-Matheny

John Hay

Eugene Zador

Ernest A Coleman

Sitaramaiah Ravipati

Wesley R Kaczmarek

A novel polishing slurry for particularly hard materials such a silicon carbide has been found. The slurry comprises diamond particles with a median particle size of around a micron and alpha alumina particles with a median size of from about 20 to about 200 nanometers.

Polishing material

Vitrified bonded abrasive bodies prepared from sol-gel sintered aluminous grit particles and a vitreous (glass) bond exhibit improved abrasive performance by coating the surfaces of the grit particles with a metal oxide, preferably by means of an organofunctional metal-containing surfactant having a metal content of at least about 10 weight percent.

Vitrified bonded finely milled sol gel aluminous bodies

Vitrified bonded abrasive bodies prepared from sol gel sintered aluminous grit particles and a vitreous (glass) bond exhibit improved abrasive performance by treating the surfaces of the grit particles so as to give them silica-enriched surfaces.

Vitrified bonded sol gel sintered aluminous abrasive bodies

Coated abrasive material for fine finishing applications including second fining ophthalmic application, having patterned surface coating of abrasive grains dispersed in radiation-cured adhesive binder. The patterned surface coating is defined by a plurality of formations of such abrasive/binder each having an inner bottom edge defining an area devoid of coated abrasive, a top edge defining a somewhat larger area devoid of coated abrasive and an inner wall connecting the top and bottom edges.

Patterned coated abrasive for fine surface finishing

Nitrified bonded sol gel sintered aluminous abrasive bodies

Particles of agglomerates of abrasive particles held in a porous glassy matrix are produced by mixing abrasive grits with known porous-glass forming compositions. In the resulting product the abrasive grits are held encapsulated within the thin walls of the porous body and tend to concentrate at the periphery of the body.

Growing community of inventors

Sturbridge, MA, United States of America

David Rostoker