Mechanical and Microstructural Properties of In, Ag, Al Doped Lead-Free Sn-Zn Solder Alloy Systems

Year 2022, , 477 - 485, 30.06.2022

Esra Öztürk

https://doi.org/10.35414/akufemubid.1075864

Abstract

Sn-Zn based lead free alloys are considered for replacing lead containing alloy systems for soldering. In this paper, In, Ag, Al doped Sn-Zn based systems were produced and investigated for mechanical and microstructural properties to obtain the most suitable system. Microstructures were observed by using an optic microscope. The samples' existing phases were investigated by using Energy Dispersive X-Ray analysis (EDX). Melting temperatures, the enthalpy of fusion and the specific heat change between the liquid and solid phases in the systems were determined with Differential Scanning Calorimetry (DSC). Also, microhardness values were measured at room temperature.

Keywords

Lead-free solder systems, Mechanical properties, Microstructure, Differential Scanning Calorimetry, Microhardness

In, Ag, Al Katkılı Kurşunsuz Sn-Zn Lehim Alaşım Sistemlerinin Mekanik ve Mikroyapısal Özellikleri

Abstract

Sn-Zn bazlı kurşunsuz alaşımlar, lehimleme için kurşun içeren alaşım sistemlerinin yerine kullanılmak üzere düşünülmektedir. Bu çalışmada, In, Ag, Al katkılı Sn-Zn esaslı sistemler üretilmiş ve en uygun sistemin elde edilmesi için mekanik ve mikro yapısal özellikler incelenmiştir. Mikro yapılar bir optik mikroskop kullanılarak gözlemlenmiştir. Numunelerin mevcut fazları Enerji Dağılım X-Işını Spektrometresi (EDX) kullanılarak araştırılmıştır. Sistemlerdeki erime sıcaklıkları, füzyon entalpisi ve sıvı ve katı fazlar arasındaki özgül ısı değişimi Diferansiyel Taramalı Kalorimetre (DSC) ile belirlenmiştir. Ayrıca oda sıcaklığında mikrosertlik değerleri de ölçülmüştür.

Keywords

Kurşunsuz Lehim Sistemleri, Mekanik Özellikler, Mikroyapı, Diferansiyel Taramalı Kalorimetre, Mikrosertlik

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