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Introduction to Zirconia Ceramic Materials

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Introduction to Zirconia Ceramic Materials

Introduction to Zirconia Ceramic Materials

Zirconia, primarily composed of zirconium dioxide, is a precision ceramic material with high mechanical strength and fracture toughness. It is widely used in the manufacture of blades, scissors, and other cutting tools, as well as components for pumps and fluid handling equipment. Furthermore, due to its excellent thermal and chemical stability, zirconium oxide has important applications in the high-temperature and corrosive environments of the aerospace, automotive, and electronics industries.

Features

Zirconia (ZrO2) is a very unique and useful ceramic material with a number of remarkable properties.

1. Superior Mechanical Properties and Applications
Zirconium oxide possesses superior mechanical properties compared to alumina, including higher strength and fracture toughness. These properties make zirconium oxide ideal for many industrial applications, particularly in environments where materials need to withstand extreme forces and abrasion.

High Strength and Fracture Toughness: Zirconia possesses strength and toughness far exceeding that of many traditional ceramic materials. This allows it to remain stable under impact and stress, reducing the likelihood of fracture.

Industrial Applications: Due to its high strength and wear resistance, zirconia is frequently used to manufacture a variety of high-performance industrial components, such as parts in milling machines, sliding components, and cutting tool inserts. These applications typically require materials capable of withstanding repeated mechanical stresses without failure.

2. Excellent thermal insulation and low thermal conductivity

Zirconia also has excellent thermal insulation properties, with a thermal conductivity far lower than that of other ceramic materials.

Low thermal conductivity: Zirconia has a thermal conductivity only one-tenth that of some other common ceramic materials. This property makes it very useful in applications requiring thermal insulation or heat preservation.

Thermal management applications: For example, in certain chemical process equipment and high-temperature furnaces, zirconia can be used as an insulation layer to help control temperature and protect sensitive mechanical components from overheating damage.

Introduction to Zirconia Ceramic Materials

Zirconia, primarily composed of zirconium dioxide, is a precision ceramic material with high mechanical strength and fracture toughness. It is widely used in the manufacture of blades, scissors, and other cutting tools, as well as components for pumps and fluid handling equipment. Furthermore, due to its excellent thermal and chemical stability, zirconium oxide has important applications in the high-temperature and corrosive environments of the aerospace, automotive, and electronics industries.

Key features
project unit Zirconia Zirconia (magnesium stabilized)
Materiál \ 94.4%
ZrO2-Y2O3
94%
ZrO2-Y2O3
94%
ZrO2-Y2O3
94.4%
ZrO2-MgO
color \ White black blue yellow
density g/cm3 6 5.6 6 5.7
Mechanical properties
project unit Zirconia Zirconia (magnesium stabilized)
Materiál \ 94.4%
ZrO2-Y2O3
94%
ZrO2-Y2O3
94%
ZrO2-Y2O3
94.4%
ZrO2-MgO
color \ White black blue yellow
Bending strength (20℃) Mpa 800 710 900 500
Compressive strength (20℃) Mpa 2000 2000 2000 2500
Elastic modulus (20℃) Gpa 200 210 200 250
Fracture toughness (20℃) MPam½ 9 8 8 6
Vepol coefficient (20℃) \ 0.3 0.3 0.3
Hardness (20℃) HRA 88 85 90
Vickers hardness (HV1) kg/mm2 1175 1100 1220 1100
Rockwell hardness (45N) R45N 78 75 78
thermal properties
project unit Zirconia Zirconia (magnesium stabilized)
Materiál \ 94.4%
ZrO2-Y2O3
94%
ZrO2-Y2O3
94%
ZrO2-Y2O3
94.4%
ZrO2-MgO
color \ White black blue yellow
coefficient of thermal expansion 10-6K-1 9.6 9.5 10 10
thermal conductivity W/mk 2.5 3 3 3
Thermal shock stability △T.℃ 250 300 300 450
Specific heat capacity J/g·k 0.46 0.48 0.46
Maximum operating temperature (aerobic) 800 800 800 2100
Electrical characteristics
project unit Zirconia Zirconia (magnesium stabilized)
Materiál \ 94.4%
ZrO2-Y2O3
94%
ZrO2-Y2O3
94%
ZrO2-Y2O3
94.4%
ZrO2-MgO
color \ White black blue yellow
Volume resistivity at 20℃ Ωcm 10¹ 10¹ 10¹ 10¹
Dielectric strength (insulation strength) KV/mm 13 13 13 13
Dielectric constant at 1MHz, room temperature \ 28 28 28 28
MHz dielectric loss angle (1MHz 20℃) tanδ 17×10⁻⁴ 17×10⁻⁴ 17×10⁻⁴ 17×10⁻⁴