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. 08, 1983
Filed:
Apr. 23, 1982
Applicant:
Inventor:
Aaron J Becker, Monroeville, PA (US);
Assignee:
Aluminum Company of America, Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C01B / ;
U.S. Cl.
CPC ...
423297 ; 501 96 ;
Abstract
A process for production of ZrB.sub.2 powder in a molten salt bath by reaction of ZrCl.sub.4 or ZrCl.sub.2 with a boron halide and Al or Mg. In a preferred embodiment the salt bath comprises ZrCl.sub.4, KCl and NaCl maintained at a temperature of about 540.degree. to 660.degree. C. and solid Al powder is reacted with ZrCl.sub.4 and BCl.sub.3. The ZrB.sub.2 powder produced in a particularly preferred embodiment has a median particle size of about 1.1 microns, is equiaxed, and has only a single phase.