Surface Treatments for Components Used in the Gas and Petroleum Industry: A XAS study

M. MIZRAHI; E.L. DALIBON; J.P. QUINTANA; F.C. HERRERA.; P. CIRIMELLO; J.L. OTEGUI; A. MARQUEZ; S. BRÜHL; F. REQUEJO

Congreso; 28th Annual Users Meeting; 2018

In Gas and Petroleum Industry, the effect of premature damage of the metal components due to combination of the corrosion-abrasion phenomena causes substantial economic losses. One of the most common types of damages in the ferrous materials (pipes, encasings, pistons, etc.), occurs when micro fractures are generated by the extreme thermal and pressure conditions. In order to mitigate these damage mechanisms, we have begun to evaluate a series of surface treatments based on Plasma Nitriding process [1, 2]. Although this type of treatment has great advantages with respect to others technique, it has been observed that, under certain experimental conditions of nitriding,deterioration in the resistance to the corrosion is found [3]. As the formation of nitrides is very sensitive to the temperature, time and atmosphere of the nitriding treatment [4], in this work we perform XANES, EXAFS and DRX measurements to be correlated with electrochemical characterizations, hardness, friction and wear test, over different nitriding conditions.