在基于Cr的装饰性涂料的人工汗液中耐腐蚀
Edgar Carneiro1,2, José David Castro2, Maria José Lima1
1CF-UM-UP-Physics Center of Minho and Porto Universities, Physics Department, University of Minho, 4800-058 Guimarães, Portugal.
Nanomaterials (Basel, Switzerland)
|August 26, 2023
概括
六价无涂料,包括氧化 (CrO) 和化 (CrN),为装饰部件开发. 克罗涂层表现出对人工汗水的优越耐腐蚀性,使其成为汽车和家电应用的理想选择.
科学领域:
- 材料科学 材料科学 材料科学
- 表面工程是什么?表面工程是什么?
- 腐蚀科学 腐蚀科学
背景情况:
- 汽车和家电行业的装饰部件需要耐用,美观的外观.
- 六价涂料带来环境和健康风险,需要更安全的替代品.
- 开发出具有出色耐腐蚀性的无涂层对于消费品至关重要.
研究的目的:
- 开发和评估用于经常接触的装饰表面的六价无涂层.
- 在模拟的人类触摸条件下评估化 (CrN) 和氧化 (CrO) 涂料的腐蚀行为.
- 为汽车和家电应用确定具有有前途的耐用性涂层.
主要方法:
- 反应磁铁喷雾被用于沉积Cr,N,O和多层CrN/CrO涂层.
- 应用了环氧层,以增强PVD涂层对基板的附着性.
- 耐腐蚀性被测试使用人工汗水96小时,采用潜在动力极化和电化学阻抗光谱 (EIS).
- 扫描电子显微镜 (SEM) 用于在腐蚀测试后分析表面形态.
主要成果:
- 所有测试的涂层都表现出良好的附着性,通过环氧介层增强.
- 在极化测试中,CrO和Cr(N,O) 涂层表现出比单独的基板更高尚的行为.
- CrN涂层表现出蚀,而CrO涂层显示出自保护性氧化物形成机制.
- 经过96小时,EIS结果显示所有薄膜的阻抗下降,CrO呈现最高值和最佳耐腐蚀性.
- 对于CrO和Cr(N,O) 涂层,腐蚀率较低,证实了它们的保护能力.
结论:
- 氧化 (CrO) 涂层为经常接触人类的装饰应用提供了有前途的耐腐蚀性.
- 这些无涂料是汽车和家电行业寻求金属表面的合适替代品.
- 开发的CrO涂层表现出一种自我保护机制,提高了它们在消费品中的耐用性.
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