Unveiling the Corrosion, Thermogravimetric and Intermetallic Properties of High Performing, Cu50A125Zn5Sn20 High Entropy Alloy

IF 0.8 4区材料科学 Q3 METALLURGY & METALLURGICAL ENGINEERING

Protection of Metals and Physical Chemistry of Surfaces Pub Date : 2025-07-17 DOI:10.1134/S2070205125700030

Ojo S. I. Fayomi, Samuel U. Ayuba, Olugbenga A. Omotosho

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Abstract

In an attempt to improve the service life of components, Cu₅₀A1₂₅Zn₅Sn₂₀ series of high entropy alloy was fabricated liquid metallurgical route in various metal atomic distributions. The developed alloy series were subjected to various characterization performances. The corrosion test under 3.65 wt % NaCl solution was performed using linear sweep polarization method. The wear studies and microhardness response were achieved through CETR reciprocating sliding tribometer and an indenter Vickers hardness machine respectively. The Veeco technologically produced thermo-gravimetric analyzer was used for the temperature stability. The impact of the HEA structure modification was determined via scanning electron microscope (SEM) and X-ray diffractometer (XRD). From the results, it was observed that (Cu₅₀Al₃₅Zn₅Sn₁₀), (Cu₅₀Al₂₅Zn₅Sn₂₀), and (Cu₅₀Al₁₅Zn₁₀Sn₂₅) create better positive corrosion resistance response against the control sample with 0.9327 mm/year. (Cu₅₀Al₂₅Zn₅Sn₂₀) possessed more superior corrosion resistance compared to other samples, with the least CR and jcorr of 0.0423 mm/year and 4.240E–06 A/cm², respectively. The wear study also established that (Cu₅₀Al₂₅Zn₅Sn₂₀) sample possessed an exceptional counter wear response of 2.777E–06 mm³/N/m and 85.4 μm², respectively. In addition, (Cu₅₀Al₃₅Zn₅Sn₁₀) and (Cu₅₀Al₂₅Zn₅Sn₂₀) possessed the lower W_plast. values of 155 382.82 and 149 375.33 pJ, compared to the control sample with the highest W_elast., W_plast. and W_total value of 513 777.08, 1 156 098.06, and 1 669 875.14 pJ, respectively. The thermal stability of the (Cu₅₀Al₂₅Zn₅Sn₂₀) sample was observed between the temperature range of 500–690, 690–720, and 720–750°C. The structure image revealed the presence of few pores and homogeneous pattern. (Cu₅₀Al₂₅Zn₅Sn₂₀) sample was seen to have exhibited higher peak intensities and narrower peak widths with crystal phases of CuSn₂AlZn.

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揭示高性能Cu50A125Zn5Sn20高熵合金的腐蚀、热重和金属间性

为了提高部件的使用寿命，采用液相冶金的方法制备了Cu50A125Zn5Sn20系列高熵合金，其金属原子分布多种多样。开发的合金系列进行了各种表征性能测试。采用线性扫描极化法在3.65 wt % NaCl溶液中进行腐蚀试验。分别通过ctr往复滑动摩擦计和压头维氏硬度仪进行磨损研究和显微硬度响应。使用Veeco技术生产的热重分析仪进行温度稳定性测试。通过扫描电子显微镜（SEM）和x射线衍射仪（XRD）测定了HEA结构修饰的影响。结果表明，（Cu50Al35Zn5Sn10）、（Cu50Al25Zn5Sn20）和（Cu50Al15Zn10Sn25）对0.9327 mm/年的对照样品具有较好的正耐蚀性响应。（Cu50Al25Zn5Sn20）具有较好的耐蚀性，CR和jcorr最小，分别为0.0423 mm/year和4.240E-06 A/cm2。磨损研究表明，（Cu50Al25Zn5Sn20）样品具有较好的反磨损响应，分别为2.777E-06 mm3/N/m和85.4 μm2。此外，（Cu50Al35Zn5Sn10）和（Cu50Al25Zn5Sn20）具有较低的Wplast。值分别为155 382.82和149 375.33 pJ，与对照样品相比，最小值最高。, Wplast。Wtotal分别为513 777.08、1 156 098.06、1 669 875.14 pJ。在500 ~ 690℃、690 ~ 720℃和720 ~ 750℃范围内观察了（Cu50Al25Zn5Sn20）样品的热稳定性。结构图像显示孔隙较少，结构均匀。（Cu50Al25Zn5Sn20）样品具有较高的峰强度和较窄的峰宽，晶相为CuSn2AlZn。

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来源期刊

Protection of Metals and Physical Chemistry of Surfaces 工程技术-冶金工程

CiteScore

1.90

自引率

18.20%

发文量

审稿时长

4-8 weeks

期刊介绍： Protection of Metals and Physical Chemistry of Surfaces is an international peer reviewed journal that publishes articles covering all aspects of the physical chemistry of materials and interfaces in various environments. The journal covers all related problems of modern physical chemistry and materials science, including: physicochemical processes at interfaces; adsorption phenomena; complexing from molecular and supramolecular structures at the interfaces to new substances, materials and coatings; nanoscale and nanostructured materials and coatings, composed and dispersed materials; physicochemical problems of corrosion, degradation and protection; investigation methods for surface and interface systems, processes, structures, materials and coatings. No principe restrictions exist related systems, types of processes, methods of control and study. The journal welcomes conceptual, theoretical, experimental, methodological, instrumental, environmental, and all other possible studies.