Graphi-Coat 623 is a patented titanium diboride based coating that significantly inhibits the oxidation of most commercial grades of graphite to 2000°F (1093°C). This two-part system is a water-based, non-volatile material that is applied easily using a brush, roller, dip- or spray-processing. Used to protect graphite crucibles and fixtures used in metallurgical casting processes from the foundry to the jewelry industries.
Graphi-Coat 623 is formulated with a weight and volume solids content of 78% and 58%, respectively. Once applied, Graphi-Coat is typically air set for 1 hour at ambient temperature then cured in-situ or in 10-15 minutes at 1400°F.
In addition to coating graphite crucibles and fixtures for metallurgical processing, Graphi-Coat 623 can be used to protect graphite electrodes used in arc-melting furnaces.