Tips & Tricks

Material Compatibility - Sample in Crucible

The right crucible must always be chosen for the given experiment.

Crucible materials should be specially selected depending on the application and sample materials in order to prevent reactions between the sample and crucible.
These tables serve to indicate which of the common crucible types can be used for each application, including ceramics, metals, inorganics and other more general applications.

General Applications

Materials/
Crucible Types
Pt/RhAl2O3AlPt+Al2O3 linerAl2O3 crucible 
sprayed with Y2O3
Graphite
Clays✓*✓*✓*No
Minerals✓*✓*✓*No
Oxide Ceramics✓*✓*✓*No
SaltsNoNoNoNo
GlassesNoNoNo✓*
MetalsNo**NoNo
Polymers
Carbon materials✓*✓*✓*✓*
Inorganics✓*✓*✓*✓*✓*✓*

 

✓          No reaction expected

✓*        Reactions possible at high temperatures

No**   Not recommended; reactions may occur prior to or during melting