对不同类型压钢的抗腐蚀性能进行比较研究
Hao Peng1, Yunlong Zhao1, Wanwan Fu1
1School of Civil Engineering and Architecture, Wuhan Polytechnic University, Wuhan 430023, China.
Materials (Basel, Switzerland)
|March 13, 2024
概括
热冲压降低了Al-Si涂层钢的耐腐蚀性,原因是微裂. 没有涂层的热钢保持耐腐蚀性,显示了汽车应用的潜力.
科学领域:
- 材料科学 材料科学 材料科学
- 腐蚀工程 腐蚀工程
- 表面工程是什么?表面工程是什么?
背景情况:
- 热冲压对于汽车制造业中先进的高强度钢件至关重要.
- 了解压钢的腐蚀机制对于耐用性至关重要.
- 通常使用Al-Si涂层,但它们在热冲压后的性能需要研究.
研究的目的:
- 为了比较未涂层和Al-Si涂层压钢的抗腐蚀机制.
- 调查热冲压工艺对钢铁耐腐蚀性的影响.
- 评估热压钢在汽车应用中的潜力.
主要方法:
- 电化学测量:潜在动力极化和电化学阻抗光谱 (EIS).
- 加速腐蚀试验:中性盐喷雾和定期浸泡试验.
- 微结构分析:扫描电子显微镜 (SEM) 和能量散射X射线分析 (EDAX).
主要成果:
- 由于微裂和铁缩,Al-Si涂层压钢在热冲压后的耐腐蚀性降低.
- 没有涂层的冷和热 (CSP) 压钢表现出相似的近接性耐腐蚀性,这是由于一致的马氏体微观结构.
- SEM/EDAX揭示了不同的腐蚀行为和各类钢材元素分布.
结论:
- 热冲压对Al-Si涂层的耐腐蚀性产生负面影响.
- 没有涂层的热压钢提供了具有竞争力的耐腐蚀性.
- 热压钢是汽车制造业中冷和涂层钢的有希望的替代品.
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