Title :
Comparative study on corrosion of SN-37PB, SN-3.5AG and SN-9ZN solders in acidic environment
Author :
Vani, R. ; D´Souza, Rudolph Charles ; Kumar, Girish
Author_Institution :
Mech. Eng. Dept., Dr. M.V. Shetty Inst. of Technol., Moodbidri, India
Abstract :
The corrosion behaviour of Sn-37Pb, Sn-3.5Ag and Sn9Zn solder alloys in hydrochloric acid and sulphuric acid solutions has been studied over a range of acid concentrations by Tafel Extrapolation electrochemical technique. The study revealed that the corrosion rates of different alloys increase with the increase in concentration of sulphuric and hydrochloric acid media. The corrosion resistance of lead based solder was found to be superior to lead-free solders in the acidic environments investigated. Significantly higher corrosion current density and corrosion rates were observed with lead-free solders.
Keywords :
corrosion resistance; current density; electrochemical analysis; extrapolation; silver alloys; soldering; solders; tin alloys; zinc alloys; SnAg; SnZn; Tafel extrapolation electrochemical technique; acid concentrations; acidic environment; corrosion current density; corrosion rates; corrosion resistance; hydrochloric acid media concentration; hydrochloric acid solutions; lead based solder; lead-free solders; solders; sulphuric acid media concentration; sulphuric acid solutions; Lead free solders; Tafel extrapolation; corrosion; corrosion current density;
Conference_Titel :
Research & Technology in the Coming Decades (CRT 2013), National Conference on Challenges in
Conference_Location :
Ujire
Electronic_ISBN :
978-1-84919-868-4
DOI :
10.1049/cp.2013.2559
