What is stabilized zirconia?

Why use stabilized zirconia instead of pure zirconia?

Stabilized Zirconia is widely used in ceramics industry. Pure zirconium oxide undergoes a phase transformation from monoclinic to tetragonal and then to cubic when temperature changes: monoclinic (1173 °C) ——> tetragonal (2370 °C) ——> cubic (2690 °C)     ——> melt.

The volume will change during the phase transformation. The transition from tetragonal to monoclinic will lead to about 9% volume increase, which will lead to crack for the ceramics.

To solve this problem, stabilization of the cubic polymorph of zirconia over wider range of temperatures is needed. The process is accomplished by the substitution of some of the Zr4+ ions (ionic radius of 0.82 Å) in the crystal lattice with slightly larger ions, e.g., those of Y3+ (ionic radius of 0.96 Å). The new formed materials are stabilized zirconia.

Most common stabilizer includes calcia (CaO), magnesia (MgO), ceria (CeO2) or alumina (Al2O3) or hafnia (HfO2).

Stanford Advanced Materials offers several different stabilized zirconia powders in bulk quantity for ceramics industry as below:

Yttria Stabilized Zirconia
Alumina‎ Stabilized Zirconia
Calcia Stabilized Zirconia
Cerium Stabilized Zirconia

About the author

Chin Trento

Chin Trento holds a bachelor’s degree in applied chemistry from the University of Illinois. His educational background gives him a broad base from which to approach many topics. He has been working with writing advanced materials for over four years in Stanford Advanced Materials (SAM). His main purpose in writing these articles is to provide a free, yet quality resource for readers. He welcomes feedback on typos, errors, or differences in opinion that readers come across.

 Previous Next 

Categories

Want More Info?

** Email address with your company's domain name is preferred. Otherwise, we may not be able to process your inquiry.

LATEST NEW & ARTICLES

Characteristics and Types of Fiberglass Mesh Filters
Characteristics and Types of Fiberglass Mesh Filters

High-Purity Molybdenum Electrode
Production Method of High-Purity Molybdenum Electrode

Molybdenum Alloys in the Aerospace and Steel Industry
Uses of Molybdenum Alloys in the Aerospace and Steel Industry

SUBSCRIBE TO OUR NEWSLETTER

*INDICATES REQUIRED FIELD

** Email address with your company's domain name is preferred. Otherwise, we may not be able to process your inquiry.