Oxidation Resistant Coatings for Molybdenum and Tungsten Parts

At H.C. Starck, we are continually improving our coating processes to provide molybdenum, tungsten and other refractory metals with outstanding protection against oxidation at high temperatures. Our molybdenum disilicide coatings are chemically bonded to the metal surface, so they do not separate or spall.

H.C. Starck’s oxidation resistant coatings create a diamond-like finish on the product, so it can withstand knocks or scrapes during installation in furnaces.

Oxidation Resistant Coating
These coatings have been very successful in the protection of molybdenum (Mo) and tungsten (W) components used in atmosphere furnaces to prevent oxidization up to 1800 oC. The coating thickness is between 0.1 mm to 0.127 mm uniformly across the component.

H.C. Starck’s coating are widely used for glass melting electrodes, atmosphere furnace fixtures, rollers, racks, die plates and crucibles for quartz glass manufacture, and machined and fabricated Mo and W parts that may be attacked by oxygen in the air.

Being produced via a chemical vapor deposition, the coatings can be applied uniformly to all surfaces including standard and threaded electrodes, and the inside of thin tubes. We are currently developing expanded uses for these coatings.