Our zirconia ceramics service:
Great Ceramic is an expert in the production of technical ceramics. Since 2013, we have participated in and provided more than 3,000 precision ceramic products to hundreds of companies.
We can provide you with ceramic processing, ceramic raw materials, ceramic mold forming and other services. We are committed to only providing products and services that meet or exceed customer quality requirements.
Yttrium Oxide Partially Stabilized Zirconia (Y-PSZ)
Yttrium oxide partially stabilized zirconia (Y-PSZ) doped with yttrium oxide (Y2O3) as a stabilizer, it strengthens and stabilizes the internal grain structure and changes the material from a monoclinic phase to a tetragonal phase to enhance the strength of the material. It is a fine-grained material with the highest bending strength among all ceramic materials. It has very high impact resistance and abrasion resistance, while providing low thermal conductivity, usually making it a suitable material to replace metals. The addition of yttria (Yttria) enables the material to undergo phase transformation toughening, thereby achieving high toughness. As the material is under pressure, the crystal structure becomes energetically more conducive to the transition from the tetragonal phase to the monoclinic phase, resulting in a 3% – 5% increase in the highly localized volume. This increase in volume puts the crack in a compressed state, thereby reducing its ability to grow and propagate into more cracks. This characteristic explains the material’s low sensitivity to stress fatigue and high bending strength.
Although Y-PSZ is very suitable for demanding mechanical applications, it may not be suitable for very high temperature applications because it will undergo a crystal phase change: when exposed to a high temperature environment for a long time, the material will change from a strong tetragonal phase to a weaker one. In monoclinic phase. Likewise, it may not be suitable for warm and humid conditions, because when it is exposed to water vapor, its performance will decrease. Therefore, Y-PSZ is most suitable for operation under dry and moderate temperature conditions.
Magnesium Oxide Partially Stabilized Zirconia (Mg-PSZ)
Magnesium Oxide Partially Stabilized Zirconia Using magnesium oxide (MgO) as a stabilizer for zirconia, the crystal structure after molding is cubic, which is more stable. Magnesium zirconium has better resistance to high temperature and humidity because it is not affected by phase migration. Even in a humid and high temperature environment where the mechanical properties of yttria partially stabilized zirconia begin to deteriorate, magnesium zirconium can maintain its strength.
Zirconia Toughened Alumina (ZTA)
Zirconia Toughened Alumina (ZTA) is a co-stabilized zirconia-based ceramic with an alumina matrix, which is reinforced by self-grown alumina substrate crystals. ZTA has better fracture toughness and thermal shock resistance than zirconia, while still having excellent mechanical strength and hardness properties.
*The values are typical material properties and may vary according to products configuration and manufacturing process. For more details, Please feel free to contact us.
Zirconia Machining & Grinding
Zirconia can be processed in green or fully dense state. In the green state, it can be processed into complex geometry relatively easily.However, the sintering process that is required to fully densify the material causes the zirconia body to shrink approximately 20%. This shrinkage means that it is impossible to hold very tight tolerances when machining zirconia pre-sintering. In order to achieve very tight tolerances, fully sintered material must be machined/ground with diamond tools. In this process a very precise diamond coated tool/wheel is used to abrade away the material until the desired form is created. Due to the inherit toughness and hardness of the material, this can be a time consuming and costly process.
Buy Custom Zirconia Components
Great Ceramic is your Zirconia machining specialist for your precision ceramic prototyping & manufacturing needs; we are always happy to use our many years of advanced ceramics experience to provide advice on materials, design, and application. If you would like to buy zirconia plates, rods, tubes or custom machined components, please contact us and one of our experts will be happy to assist you.