HalCoat for Ceramic Components

HalCoat is designed for fused silica rollers in applications such as hot stamping roller kilns.

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Morgan Advanced Materials’ Haldenwanger HalCoat is an innovative silicon nitride coating for ceramic components comprised of two grades of Si3N4 coating which can be applied to a variety of products including fused silica, silicon carbide and mullite bonded ceramics. Designed for fused silica rollers in applications such as hot stamping roller kilns, the standard purity of the first HalCoat grade helps prevent alloy build-up in the annealing process. The coating’s anti-wetting properties can extend the longevity of silica rollers, which are typically subject to layers of AlSi12 alloy forming on the surface. The second HalCoat grade has been developed for the coating of fused silica crucibles, using electro-magnetic fields to fine-tune the flow characteristics of melting silicon.