Invention Grant
US09353448B2 Electrolytic electrode, anode for electrolytic production of ozone, anode for electrolytic production of persulfuric acid and anode for electrolytic oxidation of chromium 有权
电解电极,用于电解生产臭氧的阳极,用于电解生产过硫酸的阳极和电解氧化铬的阳极

Electrolytic electrode, anode for electrolytic production of ozone, anode for electrolytic production of persulfuric acid and anode for electrolytic oxidation of chromium
Abstract:
An electrolytic electrode includes an electrode surface layer formed by a high-temperature heat treatment under a low oxygen partial pressure of 100 Pa or less and includes a valve metal oxide film, the electrode surface layer having, just beneath, a layer which includes a valve metal and a noble metal excluding silver and the noble metal is precipitated and dispersed in a crystal grain boundary of the valve metal, wherein a crystal of the valve metal in a range of down to 30 μm in a vertical depth direction from the electrode surface is a crystal grain being elongated in a vertical cross-section from the electrode surface and a content of the noble metal in a range of down to 10 μm in the vertical depth direction from the electrode surface is 5 at % or less.
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