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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.:

US 10796807 B1

PDFFull Text
Date of Patent:
Oct. 06, 2020

Filed:

Nov. 26, 2014

Nuclear reactor fuel rod and fuel assembly having bundled same

Applicant:

Hitachi, Ltd., Tokyo, JP;

Inventors:

Ryou Ishibashi, Tokyo, JP;

Kinya Aota, Tokyo, JP;

Xudong Zhang, Tokyo, JP;

Hideki Kita, Nagoya, JP;

Seiji Yamashita, Nagoya, JP;

Assignee:

HITACHI, LTD., Tokyo, JP;

Attorney:

Volpe and Koenig, P.C.

Primary Examiner:

Marshall P O'Connor

Int. Cl.
CPC ...
G21C 1/04 (2006.01); G21C 3/322 (2006.01); G21C 3/10 (2006.01); G21C 21/02 (2006.01); G21C 3/07 (2006.01); B23K 20/233 (2006.01); B23K 1/19 (2006.01); C04B 37/00 (2006.01); B23K 1/18 (2006.01); B23K 20/02 (2006.01); B23K 20/16 (2006.01); B23K 1/00 (2006.01); G21C 5/12 (2006.01); G21C 15/243 (2006.01); G21C 3/326 (2006.01); B23K 101/06 (2006.01); B23K 103/00 (2006.01);
U.S. Cl.
CPC ...
G21C 3/322 (2013.01); B23K 1/0008 (2013.01); B23K 1/18 (2013.01); B23K 1/19 (2013.01); B23K 20/026 (2013.01); B23K 20/16 (2013.01); B23K 20/233 (2013.01); C04B 37/006 (2013.01); G21C 3/07 (2013.01); G21C 3/10 (2013.01); G21C 5/126 (2013.01); G21C 15/243 (2013.01); G21C 21/02 (2013.01); B23K 2101/06 (2018.08); B23K 2103/52 (2018.08); C04B 2235/9607 (2013.01); C04B 2235/9669 (2013.01); C04B 2237/083 (2013.01); C04B 2237/122 (2013.01); C04B 2237/126 (2013.01); C04B 2237/127 (2013.01); C04B 2237/16 (2013.01); C04B 2237/365 (2013.01); C04B 2237/38 (2013.01); C04B 2237/708 (2013.01); C04B 2237/72 (2013.01); C04B 2237/765 (2013.01); C04B 2237/84 (2013.01); G21C 3/326 (2013.01); Y02E 30/30 (2013.01);
Abstract

A nuclear reactor fuel rod is a fuel rod for a light-water reactor. The nuclear reactor fuel rod includes a fuel cladding tube and an end plug, both of which are formed of a silicon carbide material. A bonding portion between the fuel cladding tube and the end plug is formed by brazing with a predetermined metal bonding material interposed, and/or by diffusion bonding. The predetermined metal bonding material has a solidus temperature of 1200° C. or higher. An outer surface of the bonding portion, and a portion of an outer surface of the fuel cladding tube and the end plug, which is adjacent to the outer surface of the bonding portion are covered by bonding-portion coating formed of a predetermined coating metal. The predetermined metal bonding material and the predetermined coating metal have an average linear expansion coefficient which is less than 10 ppm/K.

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