阶段,微观结构和腐蚀行为Al0.3FeCoNiCrx高透合金通过Cr添加
Mengyao Chen1, Haicheng Shen2, Cheng Wen2,3
1China Institute of Atomic Energy, Beijing 102413, China.
Materials (Basel, Switzerland)
|November 9, 2024
概括
这项研究研究了具有不同含量的AlFeCoNiCr高合金 (HEAs). 增加含量提高了这些单相FCC合金在NaCl溶液中的耐腐蚀性.
科学领域:
- 材料科学 材料科学 材料科学
- 腐蚀科学 腐蚀科学
- 金工业是金工业的一个方面.
背景情况:
- 高合金 (HEAs) 具有独特的特性.
- 了解微结构-腐蚀关系对于HEA开发至关重要.
- AlFeCoNiCr系统是HEA研究的一个有前途的领域.
研究的目的:
- 为了研究Al$_{0.3}$FeCoNiCr$_{x}$高合金 (HEAs) 的微结构演变.
- 为了评估这些高氧化物在3.5%重量NaCl溶液中的短期和长期腐蚀行为.
- 为了将微观结构变化与耐腐蚀性作为含量的函数相关联.
主要方法:
- 用于相位分析的X射线衍射 (XRD).
- 扫描电子显微镜使用能量分散谱法 (SEM-EDS) 进行微观结构特征.
- 电化学阻抗光谱 (EIS),潜在动力极化和浸泡测试用于腐蚀评估.
主要成果:
- 所有研究的Al$_{0.3}$FeCoNiCr$_{x}$ HEA都表现出单相FCC结构.
- 含量增加改变了微观结构,从细胞变为树突-树突间.
- 随着含量增加,耐腐蚀性得到改善,这归因于微观结构变化而不是相位转换.
结论:
- 含量显著影响Al$_{0.3}$FeCoNiCr$_{x}$ HEAs的微观结构和耐腐蚀性.
- 与AlFeCoNiCr系统中的其他HEAs相比,合金表现出更强的耐腐蚀性.
- 这些发现为设计优质耐腐蚀高温电池提供了宝贵的见解.
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