Resumo

MACHUCA, Jesús; PENA, Darío  e  ESCALANTE, Humberto. Evaluation of the synergistic behavior of erosion- corrosion on steel AISI-SAE 1020 in a multiphase flow brine-CO₂-sand by electrochemical techniques. Rev.fac.ing.univ. Antioquia [online]. 2010, n.53, pp.42-53. ISSN 0120-6230.

The weight loss caused by the phenomenon of erosion-corrosion is not equal to the amount of weight loss of erosion and corrosion when two processes act separately; the synergy between the processes contributes as much as 50% in some cases as it is shown in this research. The tests were conducted in a cell of erosion-corrosion where the dynamic was controlled by the rotating cylinder electrode at speeds between 1.000 and 3.000 rpm, the particle size of SiO₂ ranging between 50 and 150 µm, and their concentration between 10 and 30% which defined two regimes of erosion-corrosion: at low rotations, the contribution of the corrosion controlled the degradation phenomenon, and at high rotation, the erosion controlled the degradation of the system.

Palavras-chave : Erosion-corrosion; multiphase system; CO₂ corrosion; erosion.

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