Common Colors and Properties of Zirconia Ceramics
The color and properties of zirconia ceramics are closely related, with different additives causing zirconia ceramics to exhibit various colors and properties. In the market, zirconia ceramics can be found in different colors, primarily because the addition of various rare earth elements, metal elements, oxides, and other materials causes zirconia ceramics to display different colors.
Common colors of zirconia ceramics include white, black, blue, and pink. These colors correspond to different chemical compositions and crystal structures, leading to variations in their properties.
1、 White Zirconia Ceramics
White zirconia ceramics are one of the most common colors of zirconia ceramics. The color is related to its high purity chemical composition and good translucency. Pure zirconia ceramics are white, possessing high translucency and high flexural strength.
The color has minimal impact on performance, but a noticeable yellowish tint may indicate higher impurity levels, potentially affecting performance.
Performance Characteristics:
（1）High hardness and strength, often used in making tools and high-strength parts.
（2）Excellent wear and corrosion resistance, suitable for high-wear parts.
（3）High insulation properties, used in manufacturing electronic components requiring high insulation.
2、Black Zirconia Ceramics
Typically produced by adding carbides or nitrides to zirconia ceramics, giving them a black color. These ceramics exhibit good electrical conductivity and high hardness. The color depends on the type and amount of additives.
The color has minimal impact on performance, but if it is too light, it may indicate lower additive content, potentially affecting performance.
Performance Characteristics:
（1）High hardness and strength, commonly used in high-strength parts.
（2）Excellent electrical conductivity, often used in conductive components of electronic devices.
（3）Good high-temperature resistance, commonly used in high-temperature parts.
3、Blue Zirconia Ceramics
Blue zirconia ceramics are prepared by adding small amounts of metals such as copper, iron, and nickel to traditional zirconia ceramics.
Performance Characteristics:
（1）High hardness and toughness, often used in high-strength and high-toughness parts.
（2）Excellent wear and corrosion resistance, suitable for high-wear and corrosion-resistant parts.
（3）Good translucency and radiation resistance, often used in medical devices requiring high translucency and radiation resistance.
4、Pink Zirconia Ceramics
The pink color of zirconia ceramics is related to the type and content of rare earth elements added. Adding rare earth elements such as cerium oxide to zirconia ceramics produces this color.
Additionally, adding other elements like chromium, cobalt, and nickel to zirconia ceramics can result in different colors and affect their performance. The physical, chemical, and mechanical properties of zirconia ceramics may vary depending on their color.
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