和铁合的Ni-Mn-Sn形状记忆合金具有增强的机械和磁热性能
Siyao Ma1,2, Xuexi Zhang1, Guangping Zheng2
1School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China.
Materials (Basel, Switzerland)
|July 13, 2024
概括
第四个元素的兴奋剂增强了Ni-Mn-Sn铁磁形状记忆合金 (FSMAs) 用于固态制冷. 这项研究优化了用于实际冷却应用的多热量特性.
科学领域:
- 材料科学 材料科学 材料科学
- 固态物理 固态物理
- 热力学是一种热力学.
背景情况:
- 基于Ni-Mn-Sn的铁磁形状记忆合金 (FSMA) 显示出通过磁热效应 (MCE) 和弹性热效应 (eCE) 实现固态制冷的前景.
- 同时实现最佳的多热量特性,工作温度和机械特性仍然是实际应用的重大挑战.
研究的目的:
- 系统地研究第四元素 (和铁) 化对Ni-Mn-Sn合金相变和磁性特性的影响.
- 开发和报告这些合金系统的磁结构相位图.
- 为了阐明兴奋剂对先进制冷的多热量性能的影响.
主要方法:
- 对Ni50-xMn38Sn12Cux (x = 06) 和Ni50-yMn38Sn12Fey (y = 05) 合金进行系统的实验研究.
- 第一个原则计算,以了解兴奋剂对相位转换和磁性质的影响.
- 分析相位图和多热量特性.
主要成果:
- 该研究成功地绘制了研究合金系统的磁结构相位图.
- 发现,用Cu和Fe对第四元素进行兴奋剂可以有效调整相位过渡和磁性.
- 兴奋剂对合金的多热量行为产生了重大影响.
结论:
- 第四元素兴奋剂是一种有效的策略,用于增强基于Ni-Mn-Sn的FSMA的多热量特性.
- 这些优化的合金具有重要的潜力,作为用于实用的固态冷却技术的先进制冷剂.
- 这些发现有助于开发高效和环保的制冷解决方案.
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