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

fYear

2013

fDate

27-28 Sept. 2013

Firstpage

1

Lastpage

4

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;

fLanguage

English

Publisher

iet

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

Type

conf

DOI

10.1049/cp.2013.2559

Filename

6851606