Abrasive particles having coatings with tortuous surface topography

摘要

The present invention relates to abrasive composites having improved abrasive particle retention due to unique coating designs. The present invention describes coated abrasive particles having tortuous surface topography, a process for producing such coated abrasive particles, and products comprising such coated abrasive particles. The coated abrasive particles have an outer layer coating with highly tortuous surface comprising about 5 spikes and have a tortuosity of at least about 1.1. The coated abrasive particles may be used in composites including metal/metal alloy matrix composites, ceramic/glass matrix composites, and polymer based matrix composites.