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:
May. 11, 2021
Filed:
Dec. 26, 2017
Applicant:
Kyocera Corporation, Kyoto, JP;
Inventors:
Shuichi Iida, Satsumasendai, JP;
Mizuho Oota, Satsumasendai, JP;
Satoshi Toyoda, Kirishima, JP;
Hidehiro Takenoshita, Satsumasendai, JP;
Assignee:
KYOCERA Corporation, Kyoto, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C04B 35/117 (2006.01); C04B 111/26 (2006.01);
U.S. Cl.
CPC ...
C04B 35/117 (2013.01); C01P 2002/72 (2013.01); C01P 2004/61 (2013.01); C01P 2004/62 (2013.01); C04B 2111/26 (2013.01); C04B 2235/3222 (2013.01);
Abstract
A corrosion-resistant member may include alumina ceramics containing α-alumina and anorthite. The alumina ceramics may contain 0.4% by mass or more of Ca and Si in total in terms of CaO and SiO, respectively, and a mass ratio of CaO/SiOmay fall within a range of 0.5 to 2. Moreover, a ratio B/A of X-ray diffraction peak intensity B for (004) plane of the anorthite to X-ray diffraction peak intensity A for (104) plane of the α-alumina in a surface of the alumina ceramics, may be 0.01 or more.