What is the Definition of Zirconia Alumina?

Zirconia Alumina is a bluish grey colored ultra-rugged synthetic abrasive obtained from the fusion of zircon sand, zirconia ore and alumina in electric arc furnace at high temperature followed by cooling. The whole process is basically a melting recrystallization process. It is a eutectic aggregate comprised of aluminum oxide and zirconium dioxide. It has large fracture planes and is a sharper, blockier grain than aluminum oxide.

Zirconia Alumina is a high performance abrasive possesses the unique attribute of great toughness, which results the highest durability. The material is also able to withstand very high temperatures without the loss of utility, is resistant to corrosion and is very resistant to wear.

It can be used in high speed heavy duty grinding; cast iron, cast steel, alloy steel and high speed steel snagging; and particularly for grinding titanium alloy, heat-resisting alloy steel, high molybdenum steel and stainless steel, etc.

The vast majority of zirconia alumina grain for grinding wheels contains 25% zirconia, and used in hot pressed resin bonds for rough steel, titanium and nickel alloy billet conditioning, or for foundry snagging. Grain size can be as coarse as 4# (“0.26” or 6.8 mm) and used either as a single grain type or blended to include extruded sintered brown alumina (for finish), SiC (grinding titanium) or regular alumina. Eutectic Zirconia Alumina grain containing 40% zirconia is also produced. It is used primarily for coated applications and as such requires a different balance of hardness and toughness properties compared to grain for grinding wheels.

For your purchasing, you may consider the abrasive glossary or need some charts (grit size, standards, and so on). To buy Zirconia Alumina, please click the product name to get the list. Or, you can let us help you to "Guide" first by Zirconia Alumina Specifications.