Galvanic deposition method for an anthracite coloured coating and metallic parts provided with the coating
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United States of America Patent
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Jul 24, 2012
Grant Date -
Sep 23, 2010
app pub date -
Mar 18, 2010
filing date -
Mar 20, 2009
priority date (Note) -
Expired
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Abstract
The invention concerns a galvanic deposition method for an anthracite colored coating for metallic parts, including a first step of depositing a gold-nickel alloy by means of an electrolytic bath, characterized in that it includes a second step of treating said gold-nickel alloy by means of a diluted acid bath, containing an acid selected from among hydrochloric, hydrofluoric, phosphoric, nitric and sulphuric acid.
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