Surface coating for machine elements having rubbing surfaces
AssigneeRolls-Royce (1971) Limited
InventorPaul Newman
Life of this patent
Estimating the term…
Abstract
In a foil gas bearing or other similar machine element the relatively rigid shaft is coated with a glaze-forming oxide layer between 0.003 and 0.020 ins. thick, while the relatively thin foils are coated with a layer of a compound comprising cobalt and chromium carbide to a depth of up to 0.003 ins., the surface layer of which is oxidized to a depth of 0.0001 ins. to 0.0005 ins.
Claims7
A machine element comprising a relatively rigid component and a relatively flexible component adapted for relative rotation and wherein the relatively rigid component is provided with a surface layer of a glaze-forming oxide between 0.003 ins. and 0.020 ins. thick, and the relatively flexible component is provided with a surface layer of a glaze-forming oxide between 0.0001 ins. and 0.0005 ins. thick.
Dependencies are inferred from the claim text.