Community Research and Development Information Service - CORDIS


The use of stainless steel products in the home has rapidly increased over the last 30 years. Coloured stainless steels are available on the market. The colour is produced by an interaction between a transparent film of oxide and the substrate of the stainless steel. The high cost and insufficient quality of this colouring process, however, means that further research is needed. The research carried out had the aim of refining a colouring process through interaction using two methods: TSPM, spraying using air as a reactive gas, and ionic coating. Laboratory simulations showed that with TSPM it was possible to lay on continuous homogeneous layers on a one metre wide spool. A major disadvantage of spraying is the slow speed of the colouring process, which is limited by the temperature of the product when high energy densities are used. The TSPM trials were carried out therefore using a magnetron cathode. Good results were obtained using ionic coating. The process was quicker but it was more difficult to obtain a homogeneous colour over a large area. It was concluded that in industry the TSPM magnetron process was the best choice. The cost of the coloured product using this technique would be cheaper than that of a product coloured using electrolytic processes.

Additional information

Authors: GIRAUD H, UGINE, Gueugnon (FR);PONTET J, UGINE, Gueugnon (FR);CHOQUET P, UGINE, Gueugnon (FR);LOISON D, UGINE, Gueugnon (FR);CHARBONNIER J C, UGINE, Gueugnon (FR)
Bibliographic Reference: EUR 18653 FR (1998) 91pp.
Availability: Available from OOPEC Sales agents
ISBN: ISBN 92-828-5152-4
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