用于平面轴承的基于的合金 - - 和含量对机械性能的影响
Angelika Kiefel1, Steffen Gimmler2, Christoph Broeckmann1
1Institute for Materials Applications in Mechanical Engineering, 52062 Aachen, Germany.
Materials (Basel, Switzerland)
|March 13, 2024
概括
新的--铜 (ZnAlCu) 合金为大型平面轴承提供优越的强度和耐磨性,性能优于传统的锡白金属合金. 这些先进的材料是理想的要求应用程序,如风力轮机.
科学领域:
- 材料科学 材料科学 材料科学
- 机械工程 机械工程
- 部落学 (tribology) 是一个学科.
背景情况:
- 在风力轮机等新应用中,对平面轴承材料的需求日益增加,需要提高强度和耐磨性.
- 已建立的轴承材料,如锡基白色金属,对于具有不同性能配置的较大轴承是不够的.
- 需要新的合金系统来满足现代工程应用的不断变化的要求.
研究的目的:
- 调查合金组成和试验温度对--铜 (ZnAlCu) 合金的机械和 Tribological 性能的影响.
- 用先进的显微镜技术分析ZnAlCu合金的故障和磨损机制.
- 建立微观结构,性能和故障机制之间的相关性,以开发先进的轴承材料.
主要方法:
- 离心造ZnAlCu合金样本用于机械和三极学测试.
- 确定机械性能,包括强度和耐磨性.
- 使用扫描电子显微镜 (SEM) 和光显微镜进行破裂表面和磨损痕迹分析的微结构分析.
主要成果:
- 与SnSb12Cu6ZnAg白色金属合金相比,ZnAlCu合金的强度高达三倍.
- 在含量高达11%和铜含量高达1.5%的情况下,观察到显著降低磨损系数.
- 所有研究的ZnAlCu合金在各种组成中都表现出良好的磨损性能.
结论:
- ZnAlCu合金是传统轴承材料的可行替代品,提供卓越的机械和 tribological 性能.
- 了解微观结构-性质-故障机制关系,可以定制设计ZnAlCu轴承合金.
- ZnAlCu合金的中间强度范围开辟了超越传统白色金属和青铜的新应用可能性.
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