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.

Date of Patent:
Jan. 24, 2017

Filed:

Apr. 20, 2015
Applicant:

Shin-etsu Chemical Co., Ltd., Tokyo, JP;

Inventors:

Noriaki Hamaya, Echizen, JP;

Takao Maeda, Echizen, JP;

Yasushi Takai, Echizen, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C23C 4/04 (2006.01); C01F 17/00 (2006.01); C23C 4/10 (2016.01);
U.S. Cl.
CPC ...
C23C 4/04 (2013.01); C01F 17/00 (2013.01); C01F 17/0062 (2013.01); C23C 4/10 (2013.01); C01P 2004/54 (2013.01); C01P 2004/61 (2013.01); C01P 2006/11 (2013.01); C01P 2006/80 (2013.01); C01P 2006/82 (2013.01); Y10T 428/256 (2015.01); Y10T 428/2982 (2015.01);
Abstract

A powder comprising rare earth element fluoride particles having an aspect ratio of up to 2, an average particle size of 10-100 μm, a bulk density of 0.8-1.5 g/cm, and a carbon content of 0.1-0.5 wt % is amenable to atmospheric plasma spraying. An article obtained by spraying the rare earth fluoride spray powder to a substrate undergoes few partial color changes and performs well even when used in a halogen gas plasma.


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