Corrosión por picaduras en depósitos de agua de acero inoxidable austenítico en trenes hotel

D. A. Moreno; A. M. García; C. Ranninger; B. Molina

doi:10.3989/revmetalm.1146

Authors

D. A. Moreno Universidad Politécnica de Madrid, Departamento de Ingeniería y Ciencia de los Materiales, Escuela Técnica Superior de Ingenieros Industriales
A. M. García Universidad Politécnica de Madrid, Departamento de Ingeniería y Ciencia de los Materiales, Escuela Técnica Superior de Ingenieros Industriales
C. Ranninger Universidad Politécnica de Madrid, Departamento de Ingeniería y Ciencia de los Materiales, Escuela Técnica Superior de Ingenieros Industriales
B. Molina Patentes Talgo SL, Oficina Técnica

DOI:

https://doi.org/10.3989/revmetalm.1146

Keywords:

Pitting corrosion, Austenitic stainless steel, Welding, Water tank, Hotel train

Abstract

The water storage tanks of hotel trains suffered pitting corrosion. To identify the cause, the tanks were subjected to a detailed metallographic study and the chemical composition of the austenitic stainless steels used in their construction was determined. Both the tank water and the corrosion products were further examined by physicochemical and microbiological testing. Corrosion was shown to be related to an incompatibility between the chloride content of the water and the base and filler metals of the tanks. These findings formed the basis of recommendations aimed at the prevention and control of corrosion in such tanks.

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