氧化铝 (Al2O3) 和氧化石墨烯 (GO) 增强铝混合纳米复合材料电化学性能的综合评估

IF 2.6 3区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Metals Pub Date : 2024-09-16 DOI:10.3390/met14091057

Muhammad Faizan Khan, Abdul Samad Mohammed, Ihsan-ul-Haq Toor

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引用次数: 0

摘要

使用不同的电化学技术评估了内部开发的火花等离子烧结铝金属基复合材料（MMC）的电化学性能。X 射线衍射（XRD）和拉曼光谱以及 FE-SEM 和 EDS 分别用于形态、结构和元素分析，以表征纳米复合材料。结果表明，GO 增强的 Al-MMC 具有最高的电荷转移电阻（Rct）、最低的腐蚀电流密度、最低的电化学电位噪声（EPN）和电化学电流噪声（ECN）。在铝基体中加入蜂窝状结构有助于阻止 Cl- 或 SO4-2 的扩散。然而，由于铝基体和 Al2O3 增强材料之间的润湿性较差，形成了多孔界面区，导致复合材料的耐腐蚀性下降。通过光学轮廓仪进行的腐蚀后表面分析表明，与同类产品不同，GO 增强的 MMC 表面粗糙度（Ra）最低。

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A Comprehensive Evaluation of Electrochemical Performance of Aluminum Hybrid Nanocomposites Reinforced with Alumina (Al2O3) and Graphene Oxide (GO)

The electrochemical performance of in-house developed, spark plasma-sintered, Aluminum metal–matrix composites (MMCs) was evaluated using different electrochemical techniques. X-ray diffraction (XRD) and Raman spectra were used to characterize the nanocomposites along with FE-SEM and EDS for morphological, structural, and elemental analysis, respectively. The highest charge transfer resistance (Rct), lowest corrosion current density, lowest electrochemical potential noise (EPN), and electrochemical current noise (ECN) were observed for GO-reinforced Al-MMC. The addition of honeycomb-like structure in the Al matrix assisted in blocking the diffusion of Cl− or SO4−2. However, poor wettability in between Al matrix and Al2O3 reinforcement resulted in the formation of porous interface regions, leading to a degradation in the corrosion resistance of the composite. Post-corrosion surface analysis by optical profilometer indicated that, unlike its counterparts, the lowest surface roughness (Ra) was provided by GO-reinforced MMC.

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来源期刊

Metals MATERIALS SCIENCE, MULTIDISCIPLINARY-METALLURGY & METALLURGICAL ENGINEERING

CiteScore

4.90

自引率

13.80%

发文量

1832

审稿时长

1.5 months

期刊介绍： Metals (ISSN 2075-4701) is an open access journal of related scientific research and technology development. It publishes reviews, regular research papers (articles) and short communications. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. Therefore, there is no restriction on the length of the papers. The full experimental details must be provided so that the results can be reproduced. Metals provides a forum for publishing papers which advance the in-depth understanding of the relationship between the structure, the properties or the functions of all kinds of metals.