材料科学
蠕动
微观结构
差示扫描量热法
活化能
合金
扫描电子显微镜
焊接
极限抗拉强度
压力(语言学)
冶金
复合材料
分析化学(期刊)
热力学
物理
哲学
色谱法
有机化学
化学
语言学
作者
Mohammad Mousa,M. A. Mahmoud,M. M. El-Zhery,Mohammed Sobhy
出处
期刊:Physica Scripta
[IOP Publishing]
日期:2023-02-16
卷期号:98 (3): 035712-035712
被引量:2
标识
DOI:10.1088/1402-4896/acb861
摘要
Abstract The role of minor additions of Ni and GOns to Sn- 5 wt% Sb- 0.7 wt% Cu (SSC-507) has been explored. Findings of scanning electron microscopy (SEM), energy dispersive x-ray spectrometry (EDX), and x-ray diffractometry (XRD) display the new phases like (Cu,Ni) 6 Sn 5 and the size decrement of β -Sn grains. A slight increase in the melting temperature was observed using differential scanning calorimetry (DSC) analysis due to adding Ni (ΔT m = 1.02 °C) and GOns (ΔT m = 0.75 °C). Interestingly, 0.1 wt% Ni addition reduced the under-cooling by ∼28%, whenever adding of 0.1 wt% GOns enhanced the under-cooling by ∼115%. The average size of β -Sn grains of SSC-507 plain solder was decreased from ∼150 to ∼70 μ m due to adding of Ni and then GOns. The enhanced creep resistance of SSC-Ni-GOns alloy motivated the values of creep fracture and enhanced the stress exponent parameters (n) by ∼27%. The outcomes of tensile creep examination demonstrate that increasing levels of stress and testing temperatures raise the steady-state creep rates for all tested alloys. The average activation energy (E) for the three solders ranged from ∼46.5 kJ mol −1 to ∼54.3 kJ mol −1 which close to that of pipe-diffusion mechanism in Sn based solder alloy.
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