The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 16, 1993
Filed:
Jun. 20, 1989
Diwakar Garg, Macungie, PA (US);
Paul N Dyer, Allentown, PA (US);
Duane Dimos, Upper Mount Clair, NJ (US);
Air Products and Chemicals, Inc., Allentown, PA (US);
Abstract
A method for heat treating a coated substrate is described wherein the outer coating on the substrate is comprised of a chemically vapor deposited mixture of tungsten and tungsten carbide. The coated substrate is heated to the deposition temperature or not substantially above the deposition temperature in a non-reactive atmosphere. The heat treating temperature is sufficient to confer a desired improvement in erosive and abrasive wear resistance in the outer coating but does not result in substantial degradation of the mechanical properties of the substrate or in formation of undesirable inter-metallic layers.