α-Brass and (α + β) Brass Degradation Processes in Azrou Soil Medium Used in Plumbing Devices

• Published in: Journal of bio- and tribo-corrosion 2017-09, Vol.3 (3), p.1-15, Article 30
• Main Authors: Galai, M., Ouassir, J., Ebn Touhami, M., Nassali, H., Benqlilou, H., Belhaj, T., Berrami, K., Mansouri, I., Oauki, B.
• Format: Article
• Language: English
• Subjects: Alloying elements; Alloys; Biomaterials; Brasses; Chemical composition; Chemistry and Materials Science; Corrosion; Corrosion and Coatings; Corrosion effects; Corrosion resistance; Degradation; Electrochemical impedance spectroscopy; Electron microscopy; Materials Science; Polarization; Scanning electron microscopy; Soil analysis; Soil chemistry; Soil properties; Soil resistance; Solid Mechanics; Spectrometry; Spectroscopy; Tribology; X-ray spectroscopy
• ISSN: 2198-4220; 2198-4239
• DOI: 10.1007/s40735-017-0087-y

In this paper, we will study the effect of soil engineering properties’ relationship on metal degradation of two series of brass alloys (brass devices). These two types of brass are an α -brass and α  +  β one. This work aims to specifying the best alloys which are recommended to be used in Azrou soil medium. This research paper was applied by using electrochemical impedance spectroscopy methods, polarization curves, scanning electron microscopy (SEM), and X-ray spectrometry microanalysis measurements. It was found that EC5 is the most resistant alloy between the three α -brasses and EC6 which is the most resistant alloy among the four α  +  β brasses in this soil type. The different alloy surfaces were examined by SEM, whereas the chemical composition was determined by EDAX analysis. Moreover, we have studied the role and effects of synergy on various additional elements which exist in different brasses and they are responsible for increasing the corrosion resistance.