Yttria Stabilized Zirconia

Q:

Yttrium stabilized oxidation is a high-temperature material with extremely high wear resistance and corrosion resistance. Due to its excellent performance, it has been widely applied in various fields. The following are the main applications of yttrium stabilized zirconia:

1. High temperature structural materials

Yttrium stabilized zirconia has excellent high-temperature stability and can withstand high temperature corrosion and oxidation. Therefore, it is widely used as a high-temperature structural material in aerospace, power, chemical and other fields. In the aerospace field, yttrium stabilized zirconia is used as a material for engine turbine blades, which can greatly improve the working temperature and efficiency of the engine.

2. Ceramic raw materials

Yttrium stabilized zirconia can be made into ceramic materials with high hardness, density, and wear resistance, which are widely used in abrasives, grinding tools, bearings, valves, and other fields. In the field of abrasives, yttrium stabilized zirconia is used as an efficient material, which can greatly improve the lifespan and efficiency of the material.

3. Biomedical materials

Due to its good biocompatibility and biological inertness, yttrium stabilized zirconia is widely used in the field of biomedical research. In the field of dentistry, yttrium stabilized zirconia is used as a material for dental implants, and in the field of artificial joints, yttrium stabilized zirconia is used as a joint replacement material.

In summary, yttrium stabilized zirconia is a high-performance material with broad application prospects, and its application fields are constantly expanding.

Q:

The working temperature range of zirconia ceramics is quite wide, and under normal conditions, they can maintain stable performance between room temperature and 2000 degrees Celsius. The long-term usage temperature of zirconia ceramics can generally reach 1000 ℃~1200 ℃, but the actual usage temperature is affected by various factors. The specific working temperature range depends on its crystal phase. For example, the maximum working temperature of cubic zirconia can reach 2400 ° C, while the maximum working temperature of monoclinic zirconia is only about 1700 ° C

Q:

Zirconia ceramics have high hardness and strong compressive strength, but they also have brittleness. In some special cases, zirconia ceramics may fracture, such as external impact or sudden temperature changes

Q:

Zirconia ceramic is a material with various excellent properties, including:

High toughness and bending strength. Zirconia ceramics have high bending strength and fracture toughness, and can withstand large impact forces without fracture.

High hardness and wear resistance. Its Mohs hardness is about 8.5, second only to diamonds, so it has excellent wear resistance and scratch resistance.

High temperature resistance and corrosion resistance. Capable of withstanding high temperature environments and exhibiting good corrosion resistance to various chemicals.

Low thermal conductivity and low coefficient of expansion. The low thermal conductivity makes it excellent in insulation applications. At the same time, its coefficient of linear expansion is small, making it less prone to cracking due to thermal expansion during use.

Good electrical performance. It has conductivity at high temperatures and is suitable for applications that require high temperature resistance and conductivity.

Phase transformation toughening properties. Zirconia ceramics undergo crystal phase transformation at specific temperatures, which is accompanied by volume expansion, thereby enhancing the toughness and strength of the material.

Good mechanical and thermophysical properties. Make zirconia ceramics perform well in various applications, especially in situations where both mechanical and thermal loads need to be withstood simultaneously

Q:

Zirconia ceramics have found wide applications in multiple fields due to their unique physical and chemical properties. Its main features and applications include:

High toughness, high bending strength, and high wear resistance. These characteristics make zirconia ceramics an ideal choice in the field of structural ceramics, widely used in manufacturing grinding balls, micro fan shafts, fiber optic inserts and sleeves, drawing dies, cutting tools, wear-resistant cutting tools, watches, and jewelry.

Excellent electrical performance parameters. Zirconia ceramics also have important applications in the field of functional ceramics, such as oxygen sensors, solid oxide fuel cells, and high-temperature heating elements.

Biocompatibility. Zirconia ceramics can be used in healthcare fields, such as dental restorative treatments and surgical knives.

High fire resistance and chemical stability. Zirconia ceramics are also widely used in fields such as refractory materials and jewelry design, such as high-temperature heating elements and jewelry accessories.

Unique optical properties. Zirconia ceramics can be used to make colorful decorations, such as gemstones.

Good biocompatibility and corrosion resistance. Zirconia ceramics are used to make jewelry, such as watches and jewelry designs.

Weak acidic oxide properties. Zirconia ceramics have the ability to resist acidic or neutral slag erosion and can be used to make refractory crucibles for metallurgy.

In addition, zirconia ceramics are also used in the 3C electronic field, such as smartphone backboards and borders, smartwatch cases, etc.

Q:

1、 Atomic structure

The atomic structures of zirconia and alumina are different. The crystal form of alumina is hexagonal with the densest packing. Due to the small radius of Al3+ions, it has a high degree of ionization and strong intermolecular interactions, resulting in a high melting point and hardness. The crystal form of zirconia is the most densely packed cubic structure. Due to the larger radius of Zr4+ions, their intermolecular interactions are weaker, resulting in high chemical stability and corrosion resistance.

2、 Physical properties

The physical properties of zirconia and alumina are also different. Zirconia has a high density, high melting point, low coefficient of thermal expansion, low thermal conductivity, and good insulation performance; Aluminum oxide has a low density, low melting point, high coefficient of thermal expansion, high thermal conductivity, easy conductivity, and good mechanical properties

3、 Application field

Zirconia and alumina have different application areas. Aluminum oxide is mainly used to make ceramic materials, catalysts, fireproof materials, etc; Zirconia is widely used in the production of high-strength ceramics, glass, composite materials, and metal ceramic connectors