在未涂层和涂层温钢中微生物学影响的腐蚀
Sheikh Idrees Ali1, Sheikh Nazir Ahmad2
1Department of Mechanical Engineering, National Institute of Technology Srinagar, 190006, JK, India. Shkh.idrees@gmail.com.
Scientific reports
|April 12, 2025
概括
钢上的Zn-Ni-Cu和Zn-Ni-Cu-TiB2涂层有效地防止了由大肠杆菌引起的微生物腐蚀. 这些先进的涂层提供优越的耐腐蚀性,并抑制细菌在盐水环境中的生长.
科学领域:
- 材料科学 材料科学 材料科学
- 腐蚀工程 腐蚀工程
- 微生物学 微生物学
背景情况:
- 微生物诱导的腐蚀 (MIC) 对钢铁基础设施构成重大威胁.
- 开发有效的MIC防护涂层对于延长材料寿命至关重要.
- 现有的涂层可能无法充分应对像大肠杆菌 (Escherichia coli) 这样的特定微生物环境所带来的挑战.
研究的目的:
- 为了研究Zn-Ni-Cu和Zn-Ni-Cu-TiB2涂料对微生物腐蚀的腐蚀性能.
- 为了评估这些涂料在模拟微生物攻击的环境中的有效性,使用大肠杆菌和盐溶液.
- 了解这些涂料抑制细菌附着和随后腐蚀的机制.
主要方法:
- 在ASTM A-36钢材上使用高速氧燃料 (HVOF) 热喷涂涂层.
- 浸泡试验符合ASTM G-31和G1-03标准,在大肠杆菌介质中进行.
- 使用扫描电子显微镜 (SEM) 和X射线衍射 (XRD) 的表面分析.
- 电化学分析包括电化学阻抗光谱 (EIS) 和Tafel极化.
主要成果:
- Zn-Ni-Cu和 Zn-Ni-Cu-TiB2涂层显著抑制了细菌的附着和生长.
- 与未涂层钢相比,涂层钢基板的耐腐蚀性明显更高.
- XRD分析显示,涂层样本上的生形式较少,这表明保护能力提高.
- SEM证实在涂层表面的细菌殖民减少.
- 电化学测试显示,涂层样本的腐蚀潜力 (Ecorr) 较高,这表明阳极保护.
结论:
- --和---TiB2涂层提供了优良的保护,防止微生物诱导的腐蚀由大肠杆菌.
- 在涂料中加入 Zn 和 Cu 有效地防止细菌粘附.
- 这些先进的涂层代表了在具有挑战性的微生物环境中保护钢铁的有希望的解决方案.
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