ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Efficacy of zinc and tourmaline in mitigating corrosion of carbon steel in non-flow mode

Leonard D. Tijing, Michael Tom G. Ruelo, Chan-Hee Park, Altangerel Amarjargal, Han Joo Kim, Hem Raj Pant, Dong-Hwan Lee, and Cheol Sang Kim

Division of Mechanical Design Engineering, Chonbuk National University, 567 Baekje-daero, Duckjin-gu, Jeonju, Jeonbuk, 561-756, Republic of Korea

E-mail: ltijing@jbnu.ac.kr

Abstract: Laboratory corrosion immersion tests were carried out to investigate the effectiveness of a physical water treatment (PWT) using zinc and ceramic tourmaline-based catalytic materials for the control of carbon steel corrosion in acidic still water (i.e., pH 4.5–5). The tests were carried out at different water temperatures over 168 h. Our results showed a maximum of 22 % reduction in the corrosion rate using PWT in comparison with the control case. Furthermore, the corrosion products depicted more agglomerated particles after the PWT treatment. In both cases, differences were observed in the crystal structures, showing in general lower corrosion activity when PWT was used. The present results could find potential applications in water distribution systems and where metallic materials are exposed to stagnant acidic water.

Keywords: corrosion – physical water treatment – catalytic materials – tourmaline – zinc

Full paper is available at www.springerlink.com.

DOI: 10.2478/s11696-013-0387-8

Chemical Papers 67 (10) 1304–1310 (2013)