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Improving high‐temperature oxidation behaviour of Sn‐Zn‐Ag‐Al‐Ga solders

Improving high‐temperature oxidation behaviour of Sn‐Zn‐Ag‐Al‐Ga solders Purpose – The purpose of this paper is to study the influence of silver on the high‐temperature oxidation behaviour of the Sn‐8.5Zn‐ x Ag‐0.01Al‐0.1Ga ( x =0, 0.1, 0.3 and 0.5) solder alloys. Design/methodology/approach – The weight gains of the studied solders are measured using thermal gravimetric analyzers (TGA) at temperatures of 250, 300, 350 and 400°C. The weight gains measured are used to compare the oxidation behaviour of the studied solders. The surfaces of the solders are also analyzed with Auger emission spectroscopy (AES) depth profiling and thin‐film X‐ray diffractometry (thin‐film XRD) to identify the elements present on the surface of the studied solders. Findings – The TGA results show that the weight gains decrease with increasing silver content in the studied solders. It meant that increasing silver content could help improve the high‐temperature oxidation behaviour of the studied solder. AES and thin‐film XRD confirm that the formed oxide layers on the surface of the studied solder are Zn‐based oxide layers. Originality/value – The findings of this paper will help provide an understanding of the effects of silver on Sn‐8.5Zn‐ x Ag‐0.01Al‐0.1Ga solder. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Soldering & Surface Mount Technology Emerald Publishing

Improving high‐temperature oxidation behaviour of Sn‐Zn‐Ag‐Al‐Ga solders

Soldering & Surface Mount Technology , Volume 21 (4): 5 – Sep 18, 2009

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References (11)

Publisher
Emerald Publishing
Copyright
Copyright © 2009 Emerald Group Publishing Limited. All rights reserved.
ISSN
0954-0911
DOI
10.1108/09540910910989394
Publisher site
See Article on Publisher Site

Abstract

Purpose – The purpose of this paper is to study the influence of silver on the high‐temperature oxidation behaviour of the Sn‐8.5Zn‐ x Ag‐0.01Al‐0.1Ga ( x =0, 0.1, 0.3 and 0.5) solder alloys. Design/methodology/approach – The weight gains of the studied solders are measured using thermal gravimetric analyzers (TGA) at temperatures of 250, 300, 350 and 400°C. The weight gains measured are used to compare the oxidation behaviour of the studied solders. The surfaces of the solders are also analyzed with Auger emission spectroscopy (AES) depth profiling and thin‐film X‐ray diffractometry (thin‐film XRD) to identify the elements present on the surface of the studied solders. Findings – The TGA results show that the weight gains decrease with increasing silver content in the studied solders. It meant that increasing silver content could help improve the high‐temperature oxidation behaviour of the studied solder. AES and thin‐film XRD confirm that the formed oxide layers on the surface of the studied solder are Zn‐based oxide layers. Originality/value – The findings of this paper will help provide an understanding of the effects of silver on Sn‐8.5Zn‐ x Ag‐0.01Al‐0.1Ga solder.

Journal

Soldering & Surface Mount TechnologyEmerald Publishing

Published: Sep 18, 2009

Keywords: Alloys; Solders; Oxidation resistance; Silver; Alloys

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