The difference between zirconia ceramic composite tube and alumina ceramic
1, The basic concept of zirconia ceramic composite tube and alumina ceramics
Zirconia ceramic composite tube is made of zirconia ceramic and stainless steel or other metal composite tube material, its main composition is zirconia ceramic shell and metal lining. Alumina ceramic refers to the alumina ceramic material made by sintering at high temperature.
2. Physical properties
Compared with alumina ceramics, zirconia ceramics have higher compressive strength and hardness, better fracture toughness and wear resistance. The fracture toughness of zirconia ceramics is nearly 10 times higher than that of alumina ceramics and can withstand greater impact loads. Therefore, zirconia ceramic composite tube is usually used for wear and impact load is relatively large occasions, such as hydraulic systems, chemical machinery, material transportation, etc., and alumina ceramics are more suitable for applications with high heat resistance requirements, such as high temperature flue gas tubes.
3. Chemical properties
The stability of zirconia ceramics in acid, alkali and other chemical media is better than that of alumina ceramics, and it can withstand stronger acid and alkali corrosion. At the same time, zirconia ceramics have a low coefficient of friction, it is not easy to produce chemical reactions with other metal surfaces, so it is more suitable for applications with high chemical inertia requirements than alumina ceramics.
4. Cost
Because zirconia ceramic technology is more difficult and the production cost is higher, the price of zirconia ceramic composite tube is higher than that of alumina ceramic composite tube. However, in some high-demand occasions, the performance of zirconia ceramic composite tube is superior, and it is more cost-effective.
In summary, zirconia ceramic composite tube and alumina ceramic have their advantages and disadvantages, and their application occasions are also different. When choosing the ceramic material suitable for your own use, you need to choose according to the specific requirements of use.