材料科学
共晶体系
微观结构
金属间化合物
极限抗拉强度
焊接
合金
扫描电子显微镜
层状结构
纳米颗粒
相(物质)
光学显微镜
衍射仪
粒度
冶金
复合材料
纳米技术
化学
有机化学
作者
Hiba S. Mohamed,M. M. Mostafa,Nabil A. Mahmoud,Mohammad Mousa
出处
期刊:Physica Scripta
[IOP Publishing]
日期:2023-09-05
卷期号:98 (10): 105912-105912
标识
DOI:10.1088/1402-4896/acf3af
摘要
Abstract The impact of minor additions of nickel and ZrO 2 nanoparticles to eutectic Sn-9wt%Zn (SZ) prepared by vacuum melting technique was investigated. The morphologies and microstructures were carried out using an optical microscope (OM) and field emission scanning electron microscope technique (FESEM) escorted by energy dispersive x-ray spectrometry (EDX). The phase structure of the specimens was confirmed by an x-ray diffractometer (XRD). The results obtained demonstrate that small Ni addition causes a major grain refinement of β -Sn, due to the formation of the fine intermetallic compounds Ni 5 Zn 21 and Sn 3 Ni 4 Zn 3 phases and refines the formation of α - Zn lamellar phase. The melting temperature of the recently discovered solder alloys was lower than that of the eutectic Sn-Zn solders (∆Tm ∼ 28 °C) as a result of the preparation technique and the incorporation of Ni and ZrO 2 nanoparticles. The tensile test showed enhanced the mechanical properties of SZ solder as a result of the addition of third elements. The experimental results showed that of all the alloys under investigation, the SZN903 alloy had the greatest UTS and YS values. The enhanced strength of the SZ-ZrO 2 alloy defended the results of σ UTS and increased the stress exponent parameters, n, by ∼20%. All solders had an activation energy Q that measured between ∼35.62 kJ mol −1 to ∼58.12 kJ mol −1 which comparable to the pipe-diffusion mechanism.
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