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Öğe Synergistic corrosion inhibition effect of metal cations and mixtures of organic compounds: A Review(Elsevier Sci Ltd, 2017) Umoren, Saviour A.; Solomon, Moses M.The devastating effect of corrosion on the structural integrity of metals surfaces has been of great concern for some time. However, the challenge is to develop a benign and cost effective inhibitor that is highly effective. Addition of substances that exert synergistic influence and blending of different metals inhibitors had been employed. This review article delineates the effect of addition of metals cations and blending on the inhibition efficiency of metals corrosion inhibitors. The mechanisms proposed for the synergistic inhibition resulting from either addition of metals cations or blending are also discuss based on reported experimental data. (C) 2016 Elsevier Ltd. All rights reserved.Öğe Corrosion characterization of Sn-Zn solder: a review(Emerald Group Publishing Ltd, 2019) Nazeri, Muhammad Firdaus Mohd; Yahaya, Muhamad Zamri; Gürsel, Ali; Cheani, Fakhrozi; Masri, Mohamad Najmi; Mohamad, Ahmad AzminPurpose The purpose of this paper is to review and examine three of the most common corrosion characterization techniques specifically on Sn-Zn solders. The discussion will highlight the configurations and recent developments on each of the compiled characterization techniques of potentiodynamic polarization, potentiostatic polarization and electrochemical impedance spectroscopy (EIS). Design/methodology/approach The approach will incorporate a literature review of previous works related to the experimental setups and common parameters. Findings The potentiostatic polarization, potentiodynamic polarization and EIS were found to provide crucial and vital information on the corrosion properties of Sn-Zn solders. Accordingly, this solder relies heavily on the amount of Zn available because of the inability to produce the intermetallic compound in between the elements. Further, the excellent mechanical properties and low melting temperature of the Sn-Zn solder is undeniable, however, the limitations regarding corrosion resistance present opportunities in furthering research in this field to identify improvements. This is to ensure that the corrosion performance can be aligned with the outstanding mechanical properties. The review also identified and summarized the advantages, recent trends and important findings in this field. Originality/value The unique challenges and future research directions regarding corrosion measurement in Sn-Zn solders were shown to highlight the rarely discussed risks and problems in the reliability of lead-free soldering. Many prior reviews have been undertaken of the Sn-Zn system, but limited studies have investigated the corrosive properties. Therefore, this review focuses on the corrosive characterizations of the Sn-Zn alloy system.
