A method of preparing preferred abrasive grain includes: preparing a dispersion including alpha alumina oxide monohydrate and zirconia sol therein; converting the dispersion to base grit material; and sintering the base grit to form abrasive grains. The presence of the zirconia sol within the dispersion...http://www.google.se/patents/US5551963?utm_source=gb-gplus-sharePatent US5551963 - Abrasive grain containing alumina and zirconia
