Community Research and Development Information Service - CORDIS

Coatings for the protection of working surfaces

Coatings have been developed for the protection of working surfaces using metallic alloys of amorphous structure. A coating thickness of 0.5 mm has been used over surface areas of several square metres. The substrate used was either stainless steel or structural steel of copper based alloys. Use has been made of plasma spraying under controlled temperature and atmosphere with cryogenic coating. The cooling speed of particles sprayed was greater than 105 K per second. The coatings obtained have proved very hard with adequate ductility to accommodate deformations and shocks, good resistance to crack propagation and aqueous corrosion, good structural stability and adherence to substrate. The coatings are easy to implement and can be polished.

Reported by

GEC Alsthom
85,avenue L Blum
38041 Grenoble
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