Ceramic materials are made from inorganic, non-metallic materials that are sintered at high temperatures. These materials typically exhibit high hardness, high melting points, excellent heat resistance, and good electrical insulation properties. In modern industry, the use of technical ceramics is increasingly widespread, including materials like alumina, silicon carbide, and silicon nitride.
Characteristics
Hardness
Ceramic materials have very high hardness, capable of resisting scratches and wear. High-Temperature Resistance: Most ceramics can operate at temperatures exceeding 1000°C without deformation.
Corrosion Resistance
Ceramics have excellent resistance to corrosion, highly effective against most acids and alkalis.
Electrical Insulation
Their high insulating properties make ceramics extensively used in the electronics industry.
Structural and Hardness Properties
Properties
Unit
Aluminia
Zirconia
Structure
/
Poly
Poly
Composition(wt %)
/
Al2O3
ZrO2
Purity
%
99.90
95
Density
g/cm3
3.90
6.00
Hardness
HV
1900
1200
Compression strength
MPa
2500
2000
Fusion Temperature
°C
1500
1000
Thermal Expansion
10%/K
8.20
10.50
Chemical Resistence
(Acids)
Excellent
Good
Chemical Resistence
(Bases)
Good
Good
Ceramic materials are broadly used in areas such as:
Electronics Industry
As insulators, semiconductor substrates.
Mechanical Industry
Manufacturing wear-resistant parts, seals, pump and valve components.
Aerospace
Components in aviation engines and heat protection systems of spacecraft.
