关于铜渣/Cr3C2-NiCr复合涂层的耐腐蚀性研究
Jiaran Du1, Dongliang Jin2,3, Nan Guo1
1School of Mechatronics Engineering, Henan University of Science and Technology, Luoyang 471000, China.
Materials (Basel, Switzerland)
|January 28, 2026
概括
将铜渣添加到Cr3C2-NiCr涂层中可以显著提高耐腐蚀性. 这种复合材料提供了一种具有成本效益的解决方案,可以提高材料的耐用性.
科学领域:
- 材料科学 材料科学 材料科学
- 腐蚀工程 腐蚀工程
背景情况:
- 基于碳化 (Cr3C2) 的陶涂层广泛用于防磨和防腐蚀.
- 高速氧燃料 (HVOF) 喷涂是应用这些涂料的常见技术.
- 在保持或提高性能的同时降低材料成本是关键的工业挑战.
研究的目的:
- 研究将铜渣作为Cr3C2-NiCr涂层中的二次阶段的结合效应.
- 为了评估这些复合涂料的耐腐蚀性.
- 为了确定铜渣与Cr3C2-NiCr的最佳比例,以提高性能.
主要方法:
- 复合涂层是使用高速度氧燃料 (HVOF) 喷雾制造的,使用不同比例的Cr3C2-NiCr铜渣/Cr3C2-NiCr铜渣.
- 进行了电化学测试 (例如,开放电路电位,极化,阻抗光谱).
- 进行了沉浸实验,以评估腐蚀行为.
- 使用微观结构和组成分析来了解底层机制.
主要成果:
- 增加的铜渣含量积极转移了开放电路的潜力.
- 腐蚀电流密度随着更多的铜渣添加而显著降低.
- 极化电阻和电荷转移电阻显著增加.
- 铜渣与Cr3C2-NiCr的质量比为3: 7的涂层显示出优越的耐腐蚀性.
- 微观结构分析显示,孔隙性减少,结构更紧.
结论:
- 铜渣的添加有效地提高了Cr3C2-NiCr涂层的耐腐蚀性.
- 性能提升归因于更密集的微观结构和更好的被动化层稳定性.
- 优化的复合材料涂层为苛刻的环境提供了一个有希望的,具有成本效益的解决方案.
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