Contribution to the aluminum_tin_zinc ternary system

27th Joint Seminar Development of Materials Science in Research and Education

材料科学;教育

Drápala, J.^1 ; Kostiuková, G.^1 ; Losertová, M.^1

Vysoká kola báská - Technical University of Ostrava, Faculty of Metallurgy and Materials Engineering, 17. listopadu 15, Ostrava - Poruba

708 33, Czech Republic^1

关键词: Chemical microanalyses;    Identification of individuals;    Long-term annealing;    Microhardness measurement;    Resistance furnaces;    Sn-zn-al systems;    Thermocalc;    Thermodynamic modelling;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/266/1/012002/pdf
DOI  :  10.1088/1757-899X/266/1/012002

来源: IOP

【 摘 要 】

The Sn-Zn-Al alloys are one of significant candidates in the proposal of alternative lead-free solders for higher temperature soldering. This paper deals with the study of the aluminum-tin-zinc system. Twenty Sn-Zn-Al alloys together with six binary Sn-Zn alloys were prepared and studied experimentally. Alloys were prepared from pure Sn, Zn and Al (melting and cooling in a vacuum resistance furnace). The specimens were studied metallographically including the micro-hardness measurements, complete chemical analysis (ICP-AES, OES), X-ray micro-analysis of alloys by SEM and EDX in order to determine the composition and identification of individual phases. Significant temperatures and enthalpies of phase transformations were determined by DTA. After long-term annealing of selected alloys in vacuum followed by quenching the structural and chemical microanalyses of the present phases and their limit concentrations were carried out. The achieved results were compared with the thermodynamic modelling of the ternary Sn-Zn-Al system (computer programs THERMOCALC, MTDATA, PANDAT and databases CALPHAD, COST). Electrical resistivity, density, magnetic susceptibility and wettability of Sn-Zn-Al solders were measured as well.