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Yttria Stabilized Zirconia, YSZ

Yttria stabilized zirconia is a ceramic material. It is formed in a bid to stabilize the cubic crystal structure of zirconium dioxide at room temperature. To stabilize the crystal cubic structure of zirconium dioxide, manufacturers add yttrium oxide which is also known as yttria. Yttria is not the only material that can be added to stabilize zirconia. Other materials like magnesium oxide, calcium oxide, and cerium oxide are also used.

Before zirconia is stabilized, it has monoclinic, tetragonal, or cubic crystal phases. However, after it is stabilized by yttrium oxide, it has a tetragonal phase alone. Yttria stabilized zirconia is a wear-resistant and strong material. Similar materials include magnesia-stabilized zirconia, calcia-stabilized zirconia, and ceria-stabilized zirconia. These materials have similar properties and applications.

Read more: An Introduction to Yttria Stabilized Zirconia

Yttria Stabilized Zirconia Properties:

  • High strength
  • Chemical inertness
  • Strong thermal shock resistance
  • Resistant to high temprature, oxidation and corrosion



Yttria Stabilized Zirconia Applications

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Your YSZ Ceramics Supplier

Advanced Ceramic Materials is a leading supplier of yttria stabilized zirconia ceramic products of the highest quality for a wide range of applications. We are happy to provide advice on materials, design, and application. Feel free to contact us with any questions about YSZ or other ceramic materials that are not listed on the website.



Q: How Is YSZ Synthesized?
A: YSZ is typically synthesized using a process called solid-state reaction, which involves mixing zirconia and yttria powders in specific proportions and heating the mixture to a high temperature to promote chemical reaction and crystal growth. Other methods of synthesis, such as sol-gel and co-precipitation, are also used in some applications.
Q: What Are the Main Applications of YSZ?
A: YSZ is used in a variety of industrial applications, including thermal barrier coatings, solid oxide fuel cells, oxygen sensors, refractory linings, and cutting tools. It is also used in biomedical applications, such as dental implants and artificial joints, due to its biocompatibility and high strength.
Q: How Does the Level of Yttria Content Affect the Properties of YSZ?
The level of yttria content in YSZ can have a significant impact on its properties. Generally, increasing the yttria content leads to higher mechanical strength, lower thermal conductivity, and higher ionic conductivity. However, there is a trade-off between mechanical strength and ionic conductivity, as higher yttria contents tend to increase the grain size and reduce the number of grain boundaries, which can hinder the movement of oxygen ions in fuel cell applications.
Q: What Is the Crystal Structure of YSZ?
A: YSZ has a crystal structure that varies with temperature and yttria content. At high temperatures, YSZ adopts a cubic crystal structure with a fluorite-type arrangement of oxygen ions. At lower temperatures, YSZ can transform into the tetragonal and monoclinic crystal structures, depending on the level of yttria content and the cooling rate.
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