Anode coated with .beta.-lead dioxide and method of producing same
US4415411A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 23, 1981 |
| Grant date | Nov 15, 1983 |
| Priority date | — |
| Expiry date | Feb 23, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25C7/02
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
An anode coated with .beta.-lead dioxide which comprises a titanium substrate, titanium expanded metal welded on at least one side of the titanium substrate, titanium reinforcing bars welded on the peripheries of said expanded metal to both said expanded metal and said substrate, at least one intermediate layer being applied on said substrate and said expanded metal, said intermediate layer consisting either of an alloy or an oxide of platinum group metals; and a .beta.-lead dioxide coating layer on said intermediate layer. The anode of this invention has particularly good dimensional stability and provides excellent adhesion of the .beta.-lead dioxide coating layer to the substrate, and hence is highly suitable for the electrolytic production of chlorates, perchlorates, and periodates, and furthermore it is also useful as an insoluble anode in electroplating and in electrolytic treatment of waste water.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.