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.

Date of Patent:
Sep. 04, 2001

Filed:

Feb. 02, 1999
Applicant:
Inventors:

George D. Chandley, Amherst, NH (US);

Curtis A. Harrison, Flint, MI (US);

Qi Zhao, Nashua, NH (US);

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B22D 1/300 ;
U.S. Cl.
CPC ...
B22D 1/300 ;
Abstract

Tooling for handling molten or hot solid aluminum and its alloys wherein the tooling is made of a passivated titanium aluminide (TiAl) intermetallic compound having a thin passivating surface oxide film formed in-situ thereon by contact with an oxygen-bearing atmosphere at elevated temperature. The surface oxide film passivates and renders the tooling non-wetted by and non-reactive with molten aluminum and its alloys and non-bonded to hot solid aluminum and its alloys.


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