What is the Definition of Aluminum Oxide?

Aluminum Oxide refers in particular to Fused Aluminum Oxide or Fused Alumina here.

The second great innovation in abrasive technology at the turn of the twentieth century, after the Acheson process for SiC synthesis, was the invention of the Higgins electric arc furnace for the production of electro-fused alumina (or “Alun-dum”) by Aldus C. Higgins of the Norton Company in 1904 [1].

Aluminum oxide is the most common industrial mineral in use today. Fused aluminum oxide is produced synthetically by melting bauxite and an additive in an arc furnace to form a fused aluminum oxide ingots, which are later crushed and sized. Fused aluminum oxide is also produced synthetically by chemically purifying. The various types of fused aluminum oxides are distinguished by the levels of chemical impurities remaining in the fused mineral. Titanium and chromium oxides are typical additives. Fused Alumina is available in several variations depending on composition and processing such as white (high purity), brown or regular (titanium oxide modified), and pink (chromium oxide additions).

For your purchasing, you may consider the abrasive glossary or need some charts (grit size, standards, and so on). To buy these abrasive grains, please click the product name, such as “Brown Fused Alumina” to get the list. Or, you can let us help you to “Guide” first by specifications, such as Brown Fused Alumina Specifications.


Reference:
1. Wang S, Li Y, Yao M, Wang R (1998) Compressive residual stress introduced by shot peening. J Mater Process Technol 73: 64–73