Invention Grant
- Patent Title: Process of ceramic coating for silver or silver plated
- Patent Title (中): 银或镀银陶瓷涂层工艺
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Application No.: US11987837Application Date: 2007-12-05
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Publication No.: US07645371B2Publication Date: 2010-01-12
- Inventor: Bok Jin Sa
- Applicant: Bok Jin Sa
- Applicant Address: KR Seoul
- Assignee: HANA Co. Ltd.
- Current Assignee: HANA Co. Ltd.
- Current Assignee Address: KR Seoul
- Agency: GWiPS
- Main IPC: C23C28/00
- IPC: C23C28/00 ; C25D5/52 ; C25D3/00

Abstract:
A process of ceramic coatings on silver or silver-plated articles is developed in order to prevent surface tarnish, which is employed as ornaments on bags, garments or accessories such as necklaces, earrings, etc. The process comprises the steps of: forming a beryllium film on the surface of the article by fixing a stainless steel plate to an anode, fixing the silver or silver-plated article to a cathode and plating the surface of the silver or silver-plated article with beryllium in an electrolyte containing beryllium sulfate (BeSO4.4H2O) by an electroplating method; buffing the article coated with the beryllium film; washing and drying the buffed article using a surfactant; forming the resultant ceramic coating by dipping the dried article in ceramic coating solution which includes 20 to 80 cc of glass water No. 1 (liquid sodium silicate), 5 to 60 g of sodium metasilicate, 5 to 30 g of sodium tungstate, 5 to 10 g of molybdic acid in 1 liter of water; and drying the wetted article.
Public/Granted literature
- US20090145768A1 Process of ceramic coating for silver or silver plated Public/Granted day:2009-06-11
Information query
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