Fully Yttria Stabilized Zirconia (8YSZ, 8% by mole Yttria) ceramics are used when an application requires a crucible that is exceptionally strong, wear-resistant, and chemically inert at extremely elevated temperatures. Fully Yttria Stabilized Zirconia is also the preferred material for most biocompatible applications. It has the highest strength among the materials we offer and exhibits flexural strength higher than nitrides, approaching the value of carbides. This property significantly extends the reliability and lifetime of crucibles made with stabilized zirconia.

Fully Yttria Stabilized Zirconia (8YSZ) crucibles offer several advantages over alumina crucibles. Compared to alumina, 8YSZ crucibles are more refractory, have much lower thermal conductivity, a higher quality surface finish, and are denser. They are also up to four times stronger (though this strength degrades above 1000 °C). However, they are considerably more expensive, even compared to the purest grades of alumina, and are less resistant to thermal shock. The main reason for the high cost of 8YSZ is that both zirconia and yttria raw materials are rare and thus expensive.

View more information and heating/coοling suggestions in our 8YSZ ceramics brochure 

Thermansys is producing a broad range of analytical grade, dense Fully stabilized Zirconia crucibles in various sizes and forms.