Platinised Niobium
Platinised niobium anodes combine the excellent electrochemical characteristics of platinum with the very good corrosion qualities of niobium.
They are characterised by the following features:
- Production of complex shape anodes possible
- Easy handling, low maintenance
- Low electric resistance
- Excellent corrosion characteristics
- Application also in fluoride containing baths
- Long service life at very high current density
- Dimensional stability
- Replating possible
This anode type consists of a niobium base in the form of expanded metal, sheet, rod, wire, or pipe. The standard platinum layer thickness is 2 - 5 µm, in case of higher loads layer thickness of up to 20 µm. Compared to platinised titanium anodes, niobium anodes have a significantly higher breakdown voltage. A longer service lifetime at even higher current densities (up to 100 A/dm2) are achieved in particular when using in baths with low fluoride concentration.
Overview of the specifications – Platinised niobium anodes
| Base material: | Niobium |
| Shape of base material: | Expanded metal, sheet, pipe, rod, wire |
| Size and construction: | Customer specific |
| Pt-layer thickness: | 2 - 20 µm / standard: 2 - 5 µm |
| Coating methods: | Aqueous bath / Molten salt electrolysis / Pyrolytic deposition |
| Specific current density: | max. 100 A / dm2 |
| Type of application: | Anode / bipolar electrode |
| pH-value: | 0 - 11 |
| Bath temperature: | max. 60 °C |
Platinised niobium anodes are very frequently used as expanded metal anodes.
Standardly METAKEM offers the following niobium mesh types:
Contact us and we can discuss your specific application with you. We gladly assist you.