Yttrium-Oxide-Coating YO-E
• extremely refractory material
• for high temperature appications up to 2200°C (3992°F)
• thermodynamically most stable oxide
• stable with most reactive metals and alloys
• quick drying formulation
• contains high purity (99.99%) yttrium oxide


Yttrium-Oxide-Coating YO-E is a special coating based on high purity yttrium oxide (Y2O3-Content 99.99%). Yttrium oxide is the thermodynamically most stable oxide and is suitable for extreme operation conditions. This coating - similar to house paints - on water base shows an extremly good stability with reactive melts such as Ti, Cr, Zr, Hf and Nb and can applied on ceramics, graphite and steel.

With Yttrium-Oxide-Coating YO-E high purity melts can be produced in a very simple way. Therfore it finds application both within the area of reserach and development as well as in production, for example with the investment casting of Ti-alloys.

Yttrium-Oxide-Coating YO-E can be used both at air as well as in the vacuum and inert gas to 2200°C (3992°F). On graphite an application to approximetaly 1550°C (2822°F) is possible.


• Resuspend or shake Yttrium-Oxide-Coating YO-E prior to use. Dilute with ethanol if necessary.
• Apply coating on clean surfaces by brushing or spraying. Additional layers may be applied after drying.
• A thin coating application (<200µm,) is favourable. With a thick coating application exists the danger of cracking and chipping off.

Storage-Container Size

Keep container tightly closed and store product in a well ventilated and cool place. Yttrium-Oxide-Coating YO-E is available in containers of 1000ml.

Safety Advices

Yttrium-Oxide-Coating YO-E contains ethanol (ethyl alcohol) and is labelled highly flammable. Use in well ventilated areas only. An EC material safety data sheet is available.

Technical Data



Ceramic Constituent

Yttrium oxide (99.99%)

Solid Content (Yttrium oxide)



1.3 g/cm³



Temperature (max. Application)

2200°C (3992°F) (at air, vacuum, inert gas)

1550°C (2822°C) (on graphite)


© 2015 Büro für angewandte Mineralogie · Dr. Stephan Rudolph · D-47918 Tönisvorst

These recommendations are believed to be correct. However, no guarantee of their accuracy is given. Therefore, purchasers shall make their own tests to determine suitability for their use. These products are offered for industrial and related uses (e.g. research and development) only. However the user must take the necessary precautions appropriate for products containing chemicals. This description does not imply the absence of any patents, the responsibility whatsoever solely rests with the user.