通过大气等离子体喷雾沉积的功能分级涂层的微观结构和干滑动磨损评估
M Sathish1, N Radhika2, Bassiouny Saleh3,4
1Department of Mechanical Engineering, Amrita School of Engineering, Amrita Vishwa Vidyapeetham, Coimbatore, India.
Scientific reports
|September 27, 2024
概括
这项研究开发了SS410钢的高级三层TiC-12Co-10ZrO2/NiCoCrAlMo涂层. 增强的涂层显著提高了微硬度,并在极端条件下提高了耐磨性.
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:
- 耐磨涂层对于在恶劣条件下延长材料寿命至关重要.
- 用涂料增强表面可以提高耐磨性,侵蚀性和其他磨损类型的耐磨性.
- 功能分级涂料为特定应用提供了量身定制的性能.
研究的目的:
- 在SS410基板上沉积和表征三层TiC-12Co-10ZrO2/NiCoCrAlMo功能分级涂层.
- 评估这些新型涂料的微硬度和tribological性能.
- 了解极端条件下的磨损机制和保护膜的形成.
主要方法:
- 大气等离子喷雾 (APS) 技术用于涂层沉积.
- 微硬度测试 (HV) 用于量化表面硬度.
- 在不同的施加负荷,滑动距离和速度下进行三元学测试.
- 使用显微镜来识别磨损机制的磨损表面表征.
主要成果:
- 与SS410基板相比,微硬度增加了大约3.21倍 (990.4 HV).
- 在耐磨性方面显著改善:78.51% (负载),68.42% (距离) 和76.66% (速度).
- 被识别为磨料,粘合剂和分层的磨损机制,通过TiO2和Cr2O3 tribo-oxide膜减轻.
结论:
- 开发的3层功能分级涂层具有出色的微硬度和优越的耐磨性.
- 这些涂层在极端磨损环境中是有效的,因为有保护性氧化膜的形成.
- 该研究表明,这些涂料在需要高耐用性和性能的应用中具有潜力.
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