The fired brown fused aluminum oxide as an abrasive material
The quality of abrasive grains is crucial to increase the lifespan of roughing, polishing and cutting tools. This heat treatment process improves the physical properties of the brown fused aluminum oxide and results in a blue coloring, which uniquely identifies it within the abrasives industry. Besides the content of titanium and iron oxides, process variables such as time, temperature and atmospheric conditions are important in the production. The blue coloring of this aluminum oxide is explained by the optical phenomena of electron transition, and not by the formation of aluminum titanate, as some technical literature has stated.