Exotic alloys boost electrical efficiency

Article Abstract:

The use of new core materials and new design can lead to significant loss reductions in power transformers and electronic power supplies. GEC Ferranti has come up with a novel design in which the input choke, transformer and output choke are combined in one magnetic component, called a Cuk converter. Ferranti is now seeking to enhance this new design by using amorphous core materials. Another way of boosting efficiency of power transformers is by improving the steels used, by reducing the thickness of the laminations and so reducing losses.

Innovations, Design and construction, Transformers, Metallic glasses, Electric transformers, Electric power supplies, Power supply (Electronics)

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Hard alloys soften to combat corrosion

Article Abstract:

The Welding Institute (TWI) is pioneering the wider use of intermetallics which can be made more ductile than was previously thought. Researchers at Tohuku University in Japan found that adding small amounts of boron to compounds of nickel and aluminium made them more ductile and scientists at Oak Ridge in the US found that iron with aluminium compounds could also be made more ductile. Boron stops the embrittlement of hydrogen produced by the reaction between aluninium and water vapour.

Thermal properties, Intermetallic compounds

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Light alloys welded by soldering on

Article Abstract:

Techno Weld is the UK vendor of a new way of joining aluminium. The low temperature, soldering-type heating technology is cheap enough to be used by both aerospace designers and hobbyists. Techno Weld sells a welding kit containing five rods, sufficient to repair 30 aluminium engine cylinder heads, for 10 pounds sterling plus VAT.

Product introduction, Equipment and supplies, Aluminum, Aluminum (Metal), Welding, Techno Weld

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