About XTL Sinytron zirconia ceramics Introduction

zirconia ceramics Introduction

Magnesia Stabilized Zirconia (MSZ) – magnesia stabilized; for high-temperature applications; it is not vulnerable to phase transformations at elevated temperatures; heterogeneous microstructure to protect against grain boundary sliding; transformation toughened; high fracture toughness.

Yttria Stabilized Zirconia (YTZP) – yttria stabilized; fine-grained microstructure predominantly tetragonal phase; extremely high strength and toughness; use temperatures below 500°C; transformation toughened to resist crack propagation; superior chemical resistance; excellent wear resistance.

Ceria Stabilized Zirconia (CSZ) – ceria stabilized high temperature, as well as high or low pH environments; transformation toughened; maintains strength in steam and pressure conditions; ceria fills crystal structure vacancies to prevent low temperature degradation.

Zirconia Toughened Alumina (ZTA) – zirconia toughened alumina; provides 20-30% greater strength than alumina at a lower cost than stabilized zirconias. Transformation toughened; Higher toughness, hardness and wear resistance than alumina.
Composite zirconia, also known as stable zirconia and semi-stable zirconia, refers to a composite material made of zirconia as the base material and adding other non-metal oxides or metal oxides. Composite zirconia appears as white powder with no special odor. It has the advantages of good chemical stability, non-toxicity, controllable specific surface area, high hardness, and corrosion resistance. It is used in many fields such as new energy, optical communication devices, refractory materials, and special ceramics. Wide range of applications.

Zirconia ceramic of application：
1. Refractory materials

Zirconia ceramics have stable chemical properties, good thermal stability and thermal shock resistance, so it can be used as heat-resistant ceramic coatings and high-temperature refractory products. It can also be added to other refractory materials to improve fire resistance. Refractory materials made of zirconia mainly include: zirconia sizing nozzles, zirconia crucibles, zirconia refractory fibers, zirconium corundum bricks and zirconia hollow ball refractory materials. These materials are mainly used in metallurgy and silicate industries.

2. Structural ceramics

Zirconia ceramics have good mechanical properties and are widely used as engineering structural materials. The life stability of zirconia ceramic bearings is higher than that of traditional sliding and rolling bearings, and they are more wear-resistant and corrosion-resistant; zirconia ceramics can be used to make engine cylinder linings, piston rings and other parts, which can improve thermal efficiency while reducing quality; zirconia ceramics The valve can effectively replace traditional metal alloy valves, especially in harsh working environments, effectively reducing wear and improving corrosion resistance, thereby greatly extending life; zirconia ceramics can be used to make ceramic knives, which are sharper than traditional steel knives and have a beautiful appearance Beautiful and so on.

3. Functional ceramics

Zirconia is electrically conductive at high temperatures, especially after adding stabilizers, the electrical conductivity is stronger. Coupled with the high strength and toughness of zirconia ceramics, zirconia solid fuel cells can be made. In addition, piezoelectric materials composed of zirconium oxide as the main component have been widely used. Oxygen sensors made of zirconia have high sensitivity and have been widely used to detect the oxygen content of molten steel, detect the ratio of oxygen to gas in engines, and detect the oxygen content in industrial waste gas. Zirconia ceramic materials can also be made into intelligent automated detection systems such as temperature, sound, pressure and acceleration sensors.

4. Medical biological materials

The most common application of zirconia ceramic materials in the biomedical field is as dental restoration materials and surgical tools; porcelain teeth made of zirconia materials in countries such as Japan and the United States have good transparency, good biocompatibility, and excellent quality; And some researchers have successfully used zirconia materials to make artificial bones for medical purposes.

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