Sandvik unveils materials for SOFC technology
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Sandvik Materials Technology UK product story
Edited by the Engineeringtalk editorial team
Oct 21, 2008
Sandvik Surface Technology is launching interconnector materials for use in solid oxide fuel cell (SOFC) technology, which combine high temperature corrosion resistance and good surface conductivity.
Pre-coated Sandvik Sanergy HT is the result of extensive research and development by the company to introduce the optimum steel grade combined with tailor-made surface coatings to minimise chromium evaporation and extend operational life.
Sandvik Sanergy HT utilises normal industrial strip production routes and the coating is applied by Sandvik Surface Technology in a continuous process.
In the pre-coated form, Sandvik Sanergy HT has good processing and forming characteristics.
These features facilitate customer-specific requirements in terms of accommodating bespoke products for solid oxide fuel cell applications.
This can reduce the production process by offering fewer process steps and ease of handling.
The material is gas tight, allowing the use of thin plates within the fuel cell and is designed to closely mimic the expansion of ceramic materials used in SOFCs.
Sandvik Sanergy HT in its pre-coated form has a low degradation rate in fuel cell applications as a result of the cobalt coating reducing the electrical resistance of the surface as well as minimising chromium evaporation.
Carefully controlled chemical composition of the steel strip, with the addition of molybdenum and niobium, improves the material's high-temperature strength and oxidation resistance.
The pre-coated Sandvik Sanergy HT utilises an environmentally friendly manufacturing process and the steel strip is fully recyclable.
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