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磁形形状记忆纳米复合材料组装与高速高压扭转高速度

Carmela Gurau¹, Felicia Tolea², Nicanor Cimpoesu³

¹Department of Materials Engineering and Environment, Faculty of Engineering, "Dunarea de Jos" University of Galati, 47 Domneasca Street, RO-800008 Galati, Romania.

Nanomaterials (Basel, Switzerland)

|March 12, 2024

概括

高速高压扭转 (HSHPT) 有效地组装磁形状记忆纳米复合材料. 这种严重的塑料变形方法在几秒钟内实现了谷物精炼和强大的层粘合,克服了以前的限制.

科学领域:

材料科学与工程材料科学与工程
金工业是金工业的一个方面.
纳米技术纳米技术

背景情况:

严重的塑性变形 (SPD) 过程是多功能性的,特别是在高温下.
高速高压扭转 (HSHPT) 是用于纳米结构制造的SPD方法.
以前的高压扭转方法有缺点,限制了样本大小和应用.

研究的目的:

使用HSHPT组装多层形状记忆纳米复合材料.
研究复合磁合金中的微结构演变和结合.
为了克服传统高压扭转技术的局限性.

主要方法:

在造磁合金 (NiFeGa,FePdMn,CoZr) 上使用高速高压扭转 (HSHPT).
组装了各种复合材料,包括ZrCo/FePdMn和ZrCo/NiFeGa.
利用先进的自动化和可编程逻辑控制器进行精确的参数控制.
使用光学显微镜,扫描电子显微镜,能量分散光谱和原子力显微镜来描述微观结构.

主要成果:

在几秒钟内,在ZrCo/FePdMn和ZrCo/NiFeGa复合材料中实现了显著的粒度提炼和强大的层粘合.
HSHPT产生了强烈的摩擦和热量,导致快速的温度脉冲通过热导散散散.
克服了高压扭转的主要缺点,生产了具有明确界面和超细微结构的大型SPD盘.

结论:

HSHPT是一种高效和快速的方法,用于制造先进的磁形状记忆纳米复合材料.
该过程产生了优越的微观结构性质,包括精细的颗粒和强大的层粘附.
这种技术为大量生产具有增强性质的纳米结构材料提供了一个有前途的途径.

关键词:

在HSHPTT上,它是HSHPT.磁形形状记忆复合材料的复合材料严重的塑性变形.

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