ZTA Plate Zirconia Toughened Alumina Ceramic Sheet Board Black For Furnace Setter

Process:

Zirconia-toughened alumina ceramics, a particle size composition of the main component of alumina in the preparation of ceramic cylinder liners for drilling pumps, with an average particle size of 60-70 wt% in the range of 0.8-1.0 μm and an average particle size of 30-40 wt% of 1.0 -2.8μm range of two types of alumina. Add 15vol% of zirconia (containing 2 ~ 3mol% of yttrium oxide), add appropriate amount of dispersant, mix by ball milling, spray granulation, isostatic pressing, and fire in the temperature range of 1550 ~ 1620 C, it can be prepared for more than 2000 hours ceramic cylinder liner,and the forming and firing yield is high, and the raw material and process costs are low. The performance of zirconia-toughened alumina ceramics is better than 99 alumina ceramics, and the price is much lower than that of zirconia ceramics.Many occasions where alumina ceramics are incompetent show a better performance-price ratio than zirconia ceramics.

Components

80% al2o3,20% zro2

Application:

Widely used in machinery, electronics, petroleum, chemical, aerospace and textile industries.

Shapes:

Plate and cylindrical (can also be customized according to drawings).

Advantages:

Shorter form as composite ceramic, ZTA, white, corrosion-resistant, and good chemical stability. Alumina has high hardness and good zirconia toughness. The two materials form an excellent composite with high strength and high toughness, which is more versatile. It has higher flexural strength and fracture toughness at room temperature. Zirconia toughened ceramics have excellent wear resistance.

Density

g/cm3

4.2

Water absorption

％

0

Sintering temperature

C

1650

Hardness

HV(Gpa)

1650

Bending strength

Mpa

500~600

Compressive strength

Mpa

2800

Rupture strength

Mpa.m3/2

9.8

Modulus of elasticity

Gpa

310

Max temperature

C

1500

Coefficient of thermal expansion

/C

8.2*10-6

Thermal conductivity

W/m.k(25-300C)

9.8