Zirconia Toughened Alumina, (ZTA) is often used in wear applications as an intermediate solution between alumina and zirconia.

The main advantage of Zirconia Toughened Alumina (ZTA) is the additional strength and toughness over alumina with a lower cost than zirconia (YTZP, MSZ, CSZ).

The combination of aluminum oxide and 10-20% zirconium oxide provides a much higher strength, toughness, hardness and wear resistance than alumina alone.

The 20-30% increase in strength often provides the design criteria needed at a much lower cost than using zirconia.

A process called transformation toughening is the phenomenon that increases the fracture toughness of ZTA. When placed under stress, the zirconia particles change their crystal structure from a tetragonal to a monoclinic structure, causing a volume expansion that compresses the surrounding crack in the alumina matrix.

ZTA should be considered for any application where structural strength is needed that exceeds the standard alumina properties.

Zirconia Toughened Alumina Ceramics (referred to as composite ceramics, ZTA) has the characteristics of corrosion resistance and chemical stability. Alumina has high hardness and the toughness of zirconia is good. The composite ceramics have the properties of both materials, it has higher flexural strength and fracture toughness at room temperature, and zirconia toughened ceramics have excellent wear resistance, high strength, and hardness.

The performance of ZTA ceramics is better than that of 99 alumina ceramics, and the price is much lower than that of zirconia ceramics. The specific ratio of the two materials can be adjusted according to the application. Typically, ZTA contains 10-20% volume of ZrO2 in alumina. Depending on the percentage of content, the properties of the ceramic can be tailored to suit the application in question.

Edgetech Industries is a specialist supplier of zirconia toughened alumina products (Available products: ZTA rods, tubes, disc, seal ring, sheet, plate, etc.) of the highest quality for a wide range of applications.

ZTA ceramics can be produced into ceramic plain type, arc type, cube, cylinder, hex tile etc.Special machinery parts are also customized designed with CAD drawings.

In order to better take advantage of ZTA, we usually vulcanize ZTA to rubber and steel and install bolts on the back of the steel.We called the combination as wear ZTA ceramic rubber liner. Customers can easily install the product on site