通过大气等离子体喷雾过程,AlCoCrFeNi涂层SS316L的微观结构和磨损行为
Niveditha Noble1, Nachimuthu Radhika1, Jeyaprakash Natarajan2
1Department of Mechanical Engineering, Amrita School of Engineering, Amrita Vishwa Vidyapeetham, Coimbatore, India.
Science and technology of advanced materials
|May 2, 2024
概括
用AlCoCrFeNi高合金 (HEA) 涂覆316L不钢,然后火,可显著提高耐磨性和微硬度. 这种保护层提高了要求高的应用中的性能,在极端条件下延长了材料的寿命.
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?
- 部落学 (tribology) 是一个学科.
背景情况:
- 不钢316L (SS316L) 在极端条件下具有较低的耐磨性.
- 表面涂层对于提高材料在恶劣环境中的耐用性至关重要.
研究的目的:
- 为了提高SS316L的耐磨性和微硬度.
- 为了研究AlCoCrFeNi高合金 (HEA) 涂层和随后的化对SS316L的tribological特性的影响.
主要方法:
- 通过使用大气等离子体喷雾,SS316L被涂上AlCoCrFeNi HEA.
- 涂层样本在600°C下经过2小时的化.
- 微硬度和磨损测试在各种温度 (环境,400°C,600°C) 和不同负载,滑动距离和速度条件下进行.
主要成果:
- AlCoCrFeNi HEA涂层表现出一个统一的形态,厚度为150微米.
- 在回火后,微硬度增加了12%.
- 与未化样本相比,化涂层样本在耐磨性方面显著改善:57.6%87.5%在环境温度下和4.4%5.2%在400°C下.
结论:
- Annealing 增强了 SS316L 上的 AlCoCrFeNi HEA 涂层的保护能力.
- 涂层和制的SS316L表现出优越的耐磨性,使其适用于苛刻的应用.
- 观察到的磨损机制包括分层,磨损和氧化物层的形成.
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