Corrosion Resistance of Sulfur–Selenium Alloy Coatings

Autor: Parambath M. Sudeep, Pawan Sigdel, Tobin Filleter, Thierry Tsafack, M. A. S. R. Saadi, Samuel Castro-Pardo, Nikhil Koratkar, Soumyabrata Roy, Morgan Barnes, Muhammad M. Rahman, Golam Kibria, Aly Hassan, Leiqing Hu, Sandhya Susarla, Pulickel M. Ajayan, Anand B. Puthirath, Haiqing Lin, Rafael Verduzco, Yufei Cui, Jawahar R. Kalimuthu, Govinda Chilkoor, Venkataramana Gadhamshetty, Bharat K. Jasthi, Santiago D. Solares, Taib Arif
Rok vydání: 2021
Předmět:
Zdroj: Advanced Materials. 33:2104467
ISSN: 1521-4095
0935-9648
DOI: 10.1002/adma.202104467
Popis: Despite decades of research, metallic corrosion remains a long-standing challenge in many engineering applications. Specifically, designing a material that can resist corrosion both in abiotic as well as biotic environments remains elusive. Here a lightweight sulfur-selenium (S-Se) alloy is designed with high stiffness and ductility that can serve as an excellent corrosion-resistant coating with protection efficiency of ≈99.9% for steel in a wide range of diverse environments. S-Se coated mild steel shows a corrosion rate that is 6-7 orders of magnitude lower than bare metal in abiotic (simulated seawater and sodium sulfate solution) and biotic (sulfate-reducing bacterial medium) environments. The coating is strongly adhesive, mechanically robust, and demonstrates excellent damage/deformation recovery properties, which provide the added advantage of significantly reducing the probability of a defect being generated and sustained in the coating, thus improving its longevity. The high corrosion resistance of the alloy is attributed in diverse environments to its semicrystalline, nonporous, antimicrobial, and viscoelastic nature with superior mechanical performance, enabling it to successfully block a variety of diffusing species.
Databáze: OpenAIRE
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