Zirconia
Weiying Branch focuses on the research and development and production of zirconia ceramic structural parts, and has provided zirconia ceramic products for many enterprises at home and abroad. Zirconia ceramics are new types of ceramics, which are mainly divided into three kinds of magnesium stabilized zirconia ceramics, cerium stabilized zirconia ceramics and yttrium stabilized zirconia ceramics. And important raw materials for electronic materials. Among all kinds of metal oxide ceramics, zirconia has good thermal stability and thermal insulation. It is suitable for ceramic coating and high temperature refractory products. Cordierite-based ceramic pigments with zirconia ceramics as the main raw material are important components of glazes; the thermal conductivity of zirconia is low in common ceramic materials, and the thermal expansion coefficient is close to that of metal materials, making it an important structural ceramic material; the special crystal structure makes it an important electronic material;
Zirconia ceramics are moulded by dry pressing, isostatic pressing, grouting, hot die casting, tape casting, injection moulding, plastic extrusion moulding, colloidal solidification moulding and so on. Injection moulding and dry pressing moulding are widely used.
Technical parameters of zirconia ceramics
project
|
Company
|
Zirconia
|
density
|
g/cm3
|
6.05
|
Water absorption
|
%
|
0
|
Coefficient of thermal expansion
|
10-6 /k
|
10.5
|
Young's modulus of elasticity
|
Gpa
|
210
|
Poisson ratio
|
/
|
0.3
|
hardness(HV)
|
MPa
|
1200
|
Bending Strength (Room Temperature)
|
MPa
|
950
|
Bending Strength (700 C)
|
MPa
|
210
|
Compressive strength (room temperature)
|
MPa
|
2000
|
fracture toughness
|
Mpa.m1/2
|
10
|
Thermal conductivity (room temperature)
|
W/m.k
|
2
|
Specific resistivity (room temperature)
|
Ω.mm2/m
|
>1015
|
Service temperature
|
℃
|
≤1350
|
Acid-alkali corrosion resistance
|
/
|
strong
|