基于Fe的A3BX陶的第一原则调查具有高刚性和耐损伤性
1School of Physics, Guizhou University, Guiyang 550025, China. tylgzu@163.com.
Physical chemistry chemical physics : PCCP
|July 22, 2024
概括
基于新铁的抗矿石显示出高刚性,耐损坏材料的前景. Fe3SnC对高温应用和固态冷却具有出色的性能.
科学领域:
- 材料科学 材料科学 材料科学
- 固态物理 固态物理
- 计算材料科学科学 计算材料科学
背景情况:
- 开发具有高刚性和耐损坏性材料对于先进的工程应用至关重要.
- 基于Fe的反矿石提供了一个具有可调节性质的潜在材料类.
研究的目的:
- 研究基于Fe的A3BX碳化物和化物抗矿的结构,弹性,电子和热性能.
- 确定高温应用,固态制冷和耐损材料的有前途的候选材料.
主要方法:
- 使用GGA函数用于几何优化的第一原则计算.
- 形成能量,弹性波恩稳定性标准和声子分散谱的分析.
- 评估弹性模块,声速,德拜温度和热导率.
主要成果:
- 所有研究的矿都在立方结构中稳定,并具有计算的格子常量.
- 材料具有很大的弹性模块,高声速和高德拜温度.
- 基于Fe的碳化物表现出优越的刚性和准柔性特性,Fe3SnN具有最低的导热率.
结论:
- 基于Fe的A3BX抗矿是稳定的,具有出色的机械和热性能.
- Fe3SnC被确定为一个有前途的耐损材料,Fe3SnN显示出固态制冷的潜力.
- 这些材料因其高点和铁磁性金属性质而适用于高温应用.
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