Community Research and Development Information Service - CORDIS


This project investigated corrosion resistance in stainless steels and alloys, and aimed at developing an electrochemical device which could assess the surface condition of steels during the production process, without any detrimental effect on the quality of the material. Impurities in the steel can predispose corrosion at senstitive locations, such as welding points, and reactions to the chemical process of annealing can impair the material's ability to passivate, that is, to produce a passive film which protects the surface against corrosion and damage. A test was developed which can assess the effects of chemical, pickling and welding processes used in the production of stainless steels, and can measure depassivation times for various materials. The test can be directly applied to the surface of the material, and has particular value in the determination of optimum pickling times so as to ensure good surface passivity. This procedure is simple and reliable, and represents an economical means of evaluating the surface quality of stainless steels.

Additional information

Authors: VERNEAU M, Crusot-Loire Industrie;AZKARATE I, Inasmet;TAMBA A, Centro Sviluppo Materiali SpA
Bibliographic Reference: EUR 18486 EN (1998) 62pp
Availability: Available from OOPEC Sales agents
ISBN: ISBN 92-828-4475-7
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