Hello,
I'm building my own induction heater, and I need to know what type of crucible can be used to melt the PGM's powders.
I already melt silver powder using a graphite crucible.
Here is a 160g button that I melted and let it cool down in the crucible.
I'm asking this because the building of the induction heater is much simplier when you use a electricaly conductive crucible.
Types of crucible that I have heard of:
Graphite crucible (have the reduction atmosphere, the carbon from the crucible can contaminate the palladium, or other PGM's??)
Tungsten crucible
Iridium crucible
The other option is the use of a non-conductive crucible with a metal sheet of the metal powder to be melted, what type of non-conductive crucible can be used?
Alumina?? The high oxygen content is not a issue at 1700~2000°C?
silica melts at this temperatures...
Thanks!!
I'm building my own induction heater, and I need to know what type of crucible can be used to melt the PGM's powders.
I already melt silver powder using a graphite crucible.
Here is a 160g button that I melted and let it cool down in the crucible.
I'm asking this because the building of the induction heater is much simplier when you use a electricaly conductive crucible.
Types of crucible that I have heard of:
Graphite crucible (have the reduction atmosphere, the carbon from the crucible can contaminate the palladium, or other PGM's??)
Tungsten crucible
Iridium crucible
The other option is the use of a non-conductive crucible with a metal sheet of the metal powder to be melted, what type of non-conductive crucible can be used?
Alumina?? The high oxygen content is not a issue at 1700~2000°C?
silica melts at this temperatures...
Thanks!!