在添加制造的316L不钢上IN 625涂层的微观结构和腐蚀特性,即制造条件
Prithwish Tarafder1, Lingyin Meng2, Tunji Adetayo Owoseni3
1Department of Management & Engineering (IEI), Linköping University, SE-581 83 Linköping, Sweden.
Materials (Basel, Switzerland)
|February 27, 2026
概括
带有IN 625涂层的316L不钢的电子束粉末床融合 (EB-PBF) 显示了不同的耐腐蚀性. 表面粗度和加工策略显著影响腐蚀行为,轮扫描可能会增强加工品的性能.
科学领域:
- 材料科学 材料科学 材料科学
- 增材制造 增材制造 增材制造
- 腐蚀工程 腐蚀工程
背景情况:
- 316L不钢被广泛使用,但容易腐蚀.
- 电子束粉末床融合 (EB-PBF) 为金属提供了先进的制造能力.
- 在IN 625涂层的探索中,试图提高材料的性能.
研究的目的:
- 为了评估EB-PBF 316L不钢的微观结构和腐蚀性能.
- 为了研究IN 625涂层对抗腐蚀性的影响.
- 为了将微观结构特征与腐蚀性能相关联.
主要方法:
- 电子束粉末床融合 (EB-PBF) 制造 316L 不钢.
- 应用IN 625涂层,具有多种工艺参数 (层厚度,轮扫描策略).
- 用于腐蚀评估的潜在动力学偏振测试.
- 先进的微观结构调查技术.
主要成果:
- 腐蚀反应受到表面粗度,涂层特性和被动膜特性的影响.
- 在没有轮扫描的情况下,IN 625涂层提高了腐蚀潜力,但增加了腐蚀率.
- 通过轮扫描,即制造的样品显示出比涂层样品更好的耐腐蚀性.
- 在EB-PBF中的Dross颗粒会影响涂层形态,导致裂和空洞等缺陷.
结论:
- 表面地形,涂层完整性和固有的材料特性之间的相互作用决定了腐蚀行为.
- 包括轮策略和渣渣形成在内的EB-PBF加工参数,极大地影响了涂层质量和随后的腐蚀性能.
- 优化EB-PBF参数对于实现涂层316L不钢所需的耐腐蚀性至关重要.
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