What are the properties of zirconia ceramics?
Time:2019-10-15
Views:4191
Zirconia ceramics is a new type of high-tech ceramics, it has high strength, hardness, high temperature resistance, acid and alkali corrosion resistance and high chemical stability and other conditions, at the same time with anti-scratch wear resistance, no signal shielding, excellent heat dissipation performance and other characteristics, at the same time strong processing, good appearance, suitable for mass production.
1 high melting point
Zirconia has a melting point of 2715℃. The high melting point and chemical inertia make zirconia a good refractory material.
1 high melting point
Zirconia has a melting point of 2715℃. The high melting point and chemical inertia make zirconia a good refractory material.
2. High hardness and good wear resistance
Zirconia ceramics have better hardness and wear resistance. From the specific data, the mohs hardness of zirconia ceramics is about 8.5, which is very close to that of sapphire 9, while the mohs hardness of polycarbonate is only 3.0, the mohs hardness of tempered glass is 5.5, the mohs hardness of aluminum magnesium alloy is 6.0, and the mohs hardness of corning glass is 7.
Zirconia ceramics have better hardness and wear resistance. From the specific data, the mohs hardness of zirconia ceramics is about 8.5, which is very close to that of sapphire 9, while the mohs hardness of polycarbonate is only 3.0, the mohs hardness of tempered glass is 5.5, the mohs hardness of aluminum magnesium alloy is 6.0, and the mohs hardness of corning glass is 7.
Strength and toughness are relatively large
Zirconia ceramics have a greater strength (up to 1500MPa), although toughness and some metal compared to a larger gap, but compared to other ceramic materials, zirconia ceramics in the "ceramic ring" is the leader (1-35mpa.m1 /2).
Zirconia ceramics have a greater strength (up to 1500MPa), although toughness and some metal compared to a larger gap, but compared to other ceramic materials, zirconia ceramics in the "ceramic ring" is the leader (1-35mpa.m1 /2).
4. Low thermal conductivity and low expansion coefficient
The thermal conductivity of zirconia is lower in common ceramic materials (1.6-2.03W/ (m.k)), and the thermal expansion coefficient is close to that of metal. Therefore, zirconia ceramics suitable for structural ceramic materials, such as zirconia ceramic mobile phone appearance structure.
The thermal conductivity of zirconia is lower in common ceramic materials (1.6-2.03W/ (m.k)), and the thermal expansion coefficient is close to that of metal. Therefore, zirconia ceramics suitable for structural ceramic materials, such as zirconia ceramic mobile phone appearance structure.
Good electrical performance
Zirconia‘s dielectric constant is 3 times of sapphire, the signal is more sensitive, more suitable for fingerprint recognition patch. From the perspective of shielding efficiency, zirconia ceramics, as a non-metallic material, have no shielding effect on electromagnetic signals, and will not affect the internal antenna layout completely. It can be easily integrated into one shape and adapt to the era of 5G.
Zirconia‘s dielectric constant is 3 times of sapphire, the signal is more sensitive, more suitable for fingerprint recognition patch. From the perspective of shielding efficiency, zirconia ceramics, as a non-metallic material, have no shielding effect on electromagnetic signals, and will not affect the internal antenna layout completely. It can be easily integrated into one shape and adapt to the era of 5G.
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