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磁场辅助离心滑动铸造制备的AlO-Ni复合材料的结构与力学性能

The Structural and Mechanical Properties of AlO-Ni Composites Obtained by Magnetic Field-Assisted Centrifugal Slip Casting.

作者信息

Zygmuntowicz Justyna, Kosiorek Magdalena, Wachowski Marcin, Śnieżek Lucjan, Szachogłuchowicz Ireneusz, Piotrkiewicz Paulina, Kaszuwara Waldemar, Konopka Katarzyna

机构信息

Faculty of Materials Science and Engineering, Warsaw University of Technology, 141 Woloska St., 02-507 Warsaw, Poland.

Institute of Power Engineering-National Research Institute, 8 Mory St., 01-330 Warsaw, Poland.

出版信息

Materials (Basel). 2024 Aug 6;17(16):3902. doi: 10.3390/ma17163902.

DOI:10.3390/ma17163902
PMID:39203080
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11355720/
Abstract

This study investigates the influence of a magnetic field on the microstructure and properties of AlO-Ni composites fabricated via centrifugal slip casting at 1500 rpm. AlO and Ni powders were combined with water and deflocculants, homogenized, and then cast into a porous plaster mold surrounded by Nd-Fe-B magnets. The resulting composites, sintered in a reducing atmosphere, exhibited a three-zone structure with varying Ni content due to the combined effects of the magnetic field and centrifugal force. SEM, EDX, and XRD analyses confirmed the distribution and composition of the phases. Hardness tests revealed the highest values at the outermost zone, with a gradual decrease toward the inner zones. Compression tests employing digital image correlation revealed high internal stresses and a significant improvement in compressive strength compared to non-magnetic field methods. This study confirms that magnetic field-assisted centrifugal slip casting significantly enhances the structural, hardness, and compressive strength properties of AlO-Ni composites, indicating promising potential for advanced applications.

摘要

本研究调查了磁场对通过1500转/分钟的离心式注浆成型制备的AlO-Ni复合材料的微观结构和性能的影响。将AlO和Ni粉末与水及解絮凝剂混合、均质化，然后浇铸到由钕铁硼磁体包围的多孔石膏模具中。所得复合材料在还原气氛中烧结，由于磁场和离心力的共同作用，呈现出具有不同Ni含量的三区结构。扫描电子显微镜（SEM）、能谱仪（EDX）和X射线衍射（XRD）分析证实了各相的分布和组成。硬度测试表明，最外层区域的值最高，向内层区域逐渐降低。采用数字图像相关技术的压缩试验表明，与非磁场方法相比，内部应力较高，抗压强度有显著提高。本研究证实，磁场辅助离心式注浆成型显著提高了AlO-Ni复合材料的结构、硬度和抗压强度性能，显示出在先进应用方面的广阔潜力。

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