用纳米CuO添加的Al-10Zn合金的腐蚀行为和微观结构
Eman AbdElRhiem1,2, Saad G Mohamed3, Yosry F Barakat1
1Mining and Metallurgy Engineering Department, Tabbin Institute for Metallurgical Studies (TIMS), Tabbin, Helwan 109, Cairo, 11421, Egypt.
Scientific reports
|August 8, 2023
概括
将氧化铜 (CuO) 纳米颗粒添加到- (Al-10Zn) 合金中,可以改进其微观结构并提高耐腐蚀性. 这项研究研究了CuO纳米颗粒对Al-10Zn合金腐蚀在盐水环境下各种老化处理后的影响.
科学领域:
- 材料科学 材料科学 材料科学
- 腐蚀工程 腐蚀工程
- 纳米技术 纳米技术
背景情况:
- - (Al-10Zn) 合金广泛使用,但易受腐蚀.
- 纳米粒子增强是一种有前途的策略,可以改善合金的性能.
- 了解纳米铜氧化物 (CuO) 对Al-10Zn合金腐蚀行为的影响对于实际应用至关重要.
研究的目的:
- 为了研究添加1wt.%纳米CuO对Al-10Zn合金的腐蚀行为的影响.
- 为了评估老化温度对复合金的腐蚀性能的影响.
- 分析微观结构的变化及其与耐腐蚀性的相关性.
主要方法:
- 通过造制备Al-10Zn合金,并通过共同沉制备纳米CuO.
- 均化和老化处理分别在500K和423-463K进行.
- 在3.5%的NaCl溶液中进行电化学试验 (OCP,Tafel,EIS).
- 使用光学显微镜,SEM和EDX映射进行微结构分析.
- 使用XRD进行晶体分析,以确定晶体大小和脱位密度.
主要成果:
- 添加1%的CuO精炼了Al-10Zn合金的微观结构.
- 纳米CuO的添加将腐蚀潜力转移到更高尚的方向,表明抗性得到改善.
- 老化处理影响了腐蚀行为,特定的温度显示了增强的保护.
- 微结构观测证实了CuO纳米颗粒的分散及其对谷物精炼的影响.
结论:
- 纳米CuO添加是一种精制Al-10Zn合金微结构的有效方法.
- 复合Al-10Zn-1CuO合金在3.5%NaCl溶液中表现出增强的耐腐蚀性.
- 优化的老化条件进一步提高了纳米增强合金的腐蚀性能.
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