COATED ABRASIVE ARTICLE HAVING ALUMINA-ZIRCONIA ABRASIVE PARTICLES AND GLASS DILUENT PARTICLES

摘要

A coated abrasive article having an abrasive layer formed from alumina-zirconia (AZ) abrasive particles and glass diluent particles was found to have excellent grinding performance when compared to abrasive layers formed from 100 percent AZ particles or a blend of 60 percent AZ particles and 40 percent aluminum oxide particles. Replacing the significantly harder aluminum oxide particles with the much softer glass particles while still being able to maintain the same performance of the abrasive disc was an unexpected result.

主权项

1. A coated abrasive article comprising:
a backing having a make coat attaching AZ abrasive particles and glass diluent particles to the backing, the AZ abrasive particles and the glass diluent particles forming an abrasive layer; a size coat applied over the AZ abrasive particles and the glass diluent particles; and wherein a size ratio between the average size of the glass diluent particles divided by the average size of the AZ abrasive particles is from 0.5 to 2.5; and the abrasive layer comprises from 25 to 75 percent by weight AZ abrasive particles and from 75 to 25 percent by weight glass diluent particles.