NOBLE METAL COATING AND MANUFACTURING METHOD THEREOF
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United States of America Patent
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Issued Date -
Apr 25, 2013
app pub date -
Oct 12, 2012
filing date -
Oct 20, 2011
priority date (Note) -
Abandoned
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Abstract
The noble metal coating of the present invention is formed on a ceramic substrate. The noble metal coating has a thickness of less than 2 μm and comprises a matrix metal and a ceramic fine particle. The matrix metal includes at least one metal selected from a group consisting of Pt, Pd, Ru, Rh, Os, Ir and Au as a main component. The content of the ceramic fine particle is preferably 3 to 30 parts by weight with respect to 100 parts by weight of the matrix metal. The ratio between the average particle size of the ceramic fine particle and the thickness of the noble metal coating is preferably 1/1.5 to 1/400.
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