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:
Mar. 04, 1997
Filed:
Jun. 23, 1994
Karl G Shaw, Troy, NY (US);
David E Alman, Troy, NY (US);
Rene M Cooper, Ballston Spa, NY (US);
Randall M German, State College, PA (US);
Kazuo P McCoy, Troy, NY (US);
Other;
Abstract
A method is disclosed for controlling a self-propagating reaction in a particulate medium. The method comprises controlling the boundary heat flux of the reaction to produce reaction waves which travel through the particulate medium undergoing a self-propagating reaction. The method provides a product having a unitary, solid structure with layers of alternating density. Preferably the reaction is a reaction between two metals to produce an intermetallic compound or between a metal and a nonmetal to produce a ceramic compound. Nickel aluminide is a preferred intermetallic compound. Also disclosed is a controlled reactive sintering process for producing a finely divided intermetallic compound comprising comminuting the layered body of intermetallic compound. Also disclosed are a process for preparing an abrasive surface composed of a nickel aluminide binder and an abrasive material, an injection molding composition for preparing shaped articles of nickel aluminide, and a process for injection molding shaped nickel aluminide articles of greater than 98% theoretical density.