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:
Oct. 16, 2001
Filed:
Oct. 12, 1999
Applicant:
Inventor:
Steven C. Kung, North Canton, OH (US);
Assignee:
McDermott Technology, Inc., New Orleans, LA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C23C 4/10 ; C21D 1/09 ;
U.S. Cl.
CPC ...
C23C 4/10 ; C21D 1/09 ;
Abstract
A method for improving the fracture toughness for aluminum-based diffusion coatings by thermal spray means to simultaneously apply aluminum, chromium, boron, and/or silicon onto a steel workpiece, followed by heat treatment of the workpiece for a sufficient time to cause the aluminum, chromium, boron, and/or silicon to diffuse into the workpiece. The resulting diffusion coating demonstrates improved fracture toughness and does not necessitate the use of a slurry.