使用一个简单而通用的现场多式联络腐蚀测量系统来探测腐蚀
Sridhar Niverty1, Rajib Kalsar2, Robert J Seffens2
1Energy and Environment Directorate, Pacific Northwest National Laboratory, Richland, WA, 99354, USA. Sridhar.niverty@pnnl.gov.
Scientific reports
|October 4, 2023
概括
一个新的多式腐蚀系统同时捕获电化学数据,成像和进化. 这种综合方法提供了对各种金属合金中的腐蚀机制的整体理解.
科学领域:
- 材料科学 材料科学 材料科学
- 电化学 电化学 电化学
- 腐蚀科学 腐蚀科学
背景情况:
- 腐蚀过程是复杂的,涉及多个同时发生的现象.
- 了解电化学行为,表面变化和进化之间的相互作用对于材料保护至关重要.
- 现有的方法经常单独分析这些方面,限制了整体洞察力.
研究的目的:
- 开发和验证一种新的现场多式联络腐蚀系统.
- 为了同时获取电化学数据,样本成像/可视化和收集.
- 将多式联络数据关联起来,以全面了解腐蚀机制.
主要方法:
- 开发一个独特的现场多模式腐蚀系统.
- 同时获取电化学测量,光学成像和气检测.
- 对AA6061-T6合金,AZ91合金,化DP590钢和纯 Zn 的研究.
- 在开放电路电位和潜在动力学极化条件下进行测试.
主要成果:
- 该系统成功地观察到表面被动化,溶解,坑的启动/传播以及 filiform 腐蚀.
- 腐蚀事件在空间和时间上与的进化相关.
- 多模式数据揭示了微观结构和处理对腐蚀序列的影响.
- 同时获取数据提供了对腐蚀动态的整体视图.
结论:
- 在现场开发的多模式腐蚀系统使人们能够全面了解腐蚀.
- 同时获取数据是关键,以关联不同的腐蚀现象.
- 这种方法增强了对材料降解和保护策略的研究.
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