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. 29, 2016
Filed:
Sep. 13, 2012
Neal Magdefrau, Tolland, CT (US);
James T. Beals, West Hartford, CT (US);
Ellen Y. Sun, South Windsor, CT (US);
Jean Yamanis, South Glastonbury, CT (US);
Neal Magdefrau, Tolland, CT (US);
James T. Beals, West Hartford, CT (US);
Ellen Y. Sun, South Windsor, CT (US);
Jean Yamanis, South Glastonbury, CT (US);
United Technologies Corporation, Hartford, CT (US);
Abstract
A method of coating an iron-based article includes a first heating step of heating a substrate that includes an iron-based material in the presence of an aluminum source material and halide diffusion activator. The heating is conducted in a substantially non-oxidizing environment, to cause the formation of an aluminum-rich layer in the iron-based material. In a second heating step, the substrate that has the aluminum-rich layer is heated in an oxidizing environment to oxidize the aluminum in the aluminum-rich layer.