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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 10385218 B1

PDFFull Text
Date of Patent:
Aug. 20, 2019

Filed:

Dec. 04, 2014

Insulating coating composition for oriented electrical steel sheet, oriented electrical steel sheet having insulating coating formed on surface thereof by using same, and preparation method therefor

Applicant:

Posco, Pohang-si, Gyeongsangbuk-do, KR;

Inventors:

Min Serk Kwon, Pohang-si, KR;

Ho-Kyung Shim, Pohang-si, KR;

Heon-Jo Choi, Pohang-si, KR;

Byoung-Sub Choi, Pohang-si, KR;

Assignee:

POSCO, Pohang-si, Gyeongsangbuk-do, KR;

Attorney:

Morgan, Lewis & Bockius LLP

Primary Examiner:

Peter F Godenschwager

Int. Cl.
CPC ...
B05D 7/14 (2006.01); C09D 1/00 (2006.01); C09D 5/00 (2006.01); C09D 7/40 (2018.01); C09D 7/61 (2018.01); C21D 6/00 (2006.01); C21D 8/12 (2006.01); C21D 9/46 (2006.01); H01B 3/02 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/06 (2006.01); C23C 22/07 (2006.01); C23C 22/82 (2006.01);
U.S. Cl.
CPC ...
C09D 1/00 (2013.01); B05D 7/14 (2013.01); C09D 5/00 (2013.01); C09D 7/61 (2018.01); C09D 7/70 (2018.01); C21D 6/005 (2013.01); C21D 6/008 (2013.01); C21D 8/12 (2013.01); C21D 8/1222 (2013.01); C21D 8/1233 (2013.01); C21D 8/1255 (2013.01); C21D 8/1283 (2013.01); C21D 9/46 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/06 (2013.01); C23C 22/07 (2013.01); C23C 22/82 (2013.01); H01B 3/02 (2013.01);
Abstract

Provided are an insulation coating composition for an oriented electrical steel sheet, an oriented electrical steel sheet having an insulation coating formed on the surface thereof by using the same, and a manufacturing method thereof, and specifically, it is possible to provide an insulation coating composition for an oriented electrical steel sheet, including 0.1 to 7 wt % of hollow nanoparticles, 0.1 to 5 wt % of ceramic nanofibers, 0.1 to 5 wt % of mesoporous nanoparticles, 30 to 60 wt % of colloidal silica nanoparticles, and 30 to 60 wt % of phosphate, and to provide an oriented electrical steel sheet including an insulation coating produced by the composition on the surface of the oriented electrical steel sheet, including 0.005 to 0.05 wt % of any one element selected from boron (B), vanadium (V), or a combination thereof, 2.6 to 4.3 wt % of silicon (Si), 0.020 to 0.040 wt % of aluminum (Al), 0.01 to 0.20 wt % of manganese (Mn), in which the balance is composed of Fe and other inevitable impurities, and a manufacturing method thereof.

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