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. 07, 1980
Filed:
Jun. 13, 1979
Applicant:
Inventors:
Anthony J Caputo, Knoxville, TN (US);
Dante A Costanzo, Oak Ridge, TN (US);
Walter J Lackey, Jr, Oak Ridge, TN (US);
Frank L Layton, Clinton, TN (US);
David P Stinton, Knoxville, TN (US);
Assignee:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03B / ; G03C / ; G21C / ;
U.S. Cl.
CPC ...
250321 ; 250323 ; 2504751 ; 176 / ;
Abstract
This invention relates to a method for determining defective final layers of carbon on triso-coated fuel particles and the like. Samples of the particles are subjected to a high temperature treatment with gaseous chlorine and thereafter radiographed. The chlorine penetrates through any defective carbon layer and reacts with the underlying silicon carbide resulting in the volatilization of the silicon as SiCl.sub.4 leaving carbon as a porous layer. This porous carbon layer is easily detected by the radiography.