在高温下使用Al2O3/Ti3AlC2-MAX复合材料的磨损行为
Jaroslaw Wozniak1, Wojciech Pawlak2, Kamil Broniszewski1
1Faculty of Material Science and Engineering, Warsaw University of Technology, ul. Wołoska, 141, 02-507 Warsaw, Poland.
Materials (Basel, Switzerland)
|August 28, 2025
概括
将碳化 (Ti3AlC2) MAX相添加到 (Al2O3) 中,可以增强其性能. 这种复合材料作为有效的固体滑剂,特别是在高温下,显著减少磨损.
科学领域:
- 材料科学
- 部落学
- 陶工程
背景情况:
- (Al2O3) 是一种广泛使用的陶材料,但其三角学性能可能受到限制.
- 固体滑剂对于在苛刻的环境中减少摩擦和磨损至关重要.
- MAX相是一种具有独特性质的三元碳化物和化物.
研究的目的:
- 为了研究添加Ti3AlC2MAX阶段到Al2O3的影响.
- 评估由此产生的复合材料的机械和 tribological 属性.
- 评估Ti3AlC2作为Al2O3的固体滑剂的潜力.
主要方法:
- 通过粉末金制备复合材料.
- 使用火花等离子烧结 (SPS) 巩固复合材料.
- 在高温下对相组合,硬度,断裂性和三角学行为进行评估.
主要成果:
- 烧结复合材料实现了高密度.
- 含有10%Ti3AlC2的样本显示硬度为2000HV5左右,破裂度为5.5MPa·m0.5.
- 与未加强的Al2O3相比,复合材料在700°C时显著减少磨损.
结论:
- 添加Ti3AlC2MAX可以改善Al2O3的机械性能.
- Ti3AlC2有效地作为Al2O3复合材料中的固体滑剂.
- 复合材料在高温下表现出优异的性能,特别是在耐磨性方面.
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