Communications - Scientific Letters of the University of Zilina 2014, 16(11):194-199 | DOI: 10.26552/com.C.2014.3A.194-199

Corrosion Properties of Various Copper Pipes Joints

Tatiana Liptakova¹, Monika Halamova¹, Ayman Alaskari², Martin Lovisek¹, Maxim Puchnin³

¹ Department of Materials Engineering, Faculty of Mechanical Engineering, University of Zilina, Slovakia

² Department of Mechanical Production Technology, College of Technological Studies, Shuwaikh, Kuwait

³ Department of Materials Engineering, Faculty of Mechanical Engineering, Czech Technical University in Prague, Czech Republic

The paper presents the experimental results of various Cu pipes joint corrosion behavior. Joining of copper pipes used for liquid media transport can be made as demountable and fixed joints. The object is to study corrosion resistance of the joints created by soft soldering, hard soldering and fitting. Corrosion properties were investigated by long-term experiment in two identical experimental devices in stagnant and flowing conditions. The experimental environment was water solution of the 3% NaCl, temperature was kept 20° C for 16 hours and 8 hours 80° C per day. In one of the devices for 8 hours the experimental solution was flowing by the input speed 0.27m.s -1. In the second one no flow was applied. Evaluation of the joints corrosion attacks was performed visually, by light and scanning electron microscopy.

Keywords: copper pipes, joints, corrosion, corrosion products

Published: October 31, 2014  Show citation