ZIRCON (ZIRCONIUM SILICATE)
Zircon is widely used in the production of coatings, due to its high refractoriness (melting
point at 2200°C) and round grain shape. This nearly round grain shape reaches a very
good packing density between the particles and so it is possible to reduce the amount of
binder needed. But at the same time a very strong and stable thickness will be
developed.
Zircon has an excellent resistance to thermal shocks and very small thermal expansion.
With regards to melting, zircon is very resistant. (One exception: austenitic manganese
steel).
Often zircon is used for steel and heavy/alloy iron castings. However the other technical
benefits of zircon are limited and it is not the ideal filler in many circumstances.