Hardide coatings are used extensively in the oil & gas industry on downhole and directional drilling tools that are subject to severe slurry and chemical erosion combined with abrasive wear. Hardide coatings are especially seal friendly and reduce the wear of counter-body materials and provide superior wear, erosion, corrosion and chemical resistance. The result is extended drilling time and less-frequent part replacement.
The patented CVD application process means the coating can be precision applied to both internal and exterior surfaces, enabling a level of design flexibility that is not possible with carbides or ceramics. Hardide coatings do not require a binder and are cobalt-free, an important advantage for nuclear applications where cobalt-containing alloys and hard-facing can produce radioactive and hazardous Co60 isotopes if irradiated.