3m Innovative Properties Company

Larry D Monroe

Ahmet Celikkaya

Darren T Castro

Grant E Greske

Abrasive particles include: 0.50 to 5.00 weight percent of seed particles for alpha-alumina formation selected from the group consisting of alpha-FeOseed particles, alpha-AlOseed particles, and combinations thereof; 0.50 to 5.00 weight percent of MgO; 0.02 to 0.40 weight percent of LiO or a molar equivalent amount of at least one alkali metal oxide selected from the group consisting of: NaO; KO; combinations of NaO and LiO; combinations of KO and LiO; combinations of NaO and KO; and combinations of LiO, NaO, and KO; and 91.08 to 99.48 weight percent of AlO. Methods of making the abrasive particles and abrasive articles incorporating them are also disclosed.

Abrasive particles, abrasive articles, and methods of making and using the same

Sintered alpha alumina-based abrasive particles comprising alpha alumina, Gd O , and ZnO, and methods of making the same. The abrasive particles can be incorporated, for example, into a variety of abrasive articles, including bonded abrasives, coated abrasives, nonwoven abrasives, and abrasive brushes.

Alpha alumina-based abrasive grain. The abrasive grain can be incorporated into abrasive products such as coated abrasives, bonded abrasives, non-woven abrasives, and abrasive brushes.

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Maplewood, MN, United States of America

Larry D Monroe