| abstract |
An article is coated with a multi-layer coating comprising annickel layer deposited on the surface of the article, a nickel-tungsten-boronnlayer deposited on the nickel layer, a refractorynmetal, preferably zirconium layer deposited on the nickel-tungsten-boronnlayer, a sandwich layer comprised of alternating layers of anrefractory metal and of a refractory metal compound deposited onnthe refractory metal layer, a refractory metal compound layer,npreferably zirconium nitride, deposited on the sandwich layer, andna layer comprised of a refractory metal oxide or the reactionnproducts of a refractory metal, oxygen and nitrogen deposited onnthe refractory metal compound layer. |