Fluorescent cobalt ferrite nanoparticles for non-destructive magnetic particle testing

IF 2.7 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of Materials Research Pub Date : 2024-07-22 DOI:10.1557/s43578-024-01396-4

Z. Baharlouei, M. H. Enayati, S. M. Nahvi

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Abstract

Magnetic particle testing is one of the popular methods to detect very small surface or near-surface defects in engineering parts. Successful defect detection depends on the physical properties of the particles. This work aims to synthesize cobalt ferrite-fluorescent polymer particles to detect finer defects located in deeper places. For this purpose, cobalt ferrite (CoFe₂O₄) nanoparticles were synthesized and the next step, fluorescence pigment was incorporated into CoFe₂O₄ nanoparticles. X-ray diffraction (XRD), scanning electron microscopy (SEM), vibration magnetometer (VSM), and Fourier transform infrared spectroscope (FTIR) were used to examine the effects of various parameters. CoFe₂O₄ nanoparticles with a size of about 55 nm and suitable magnetic properties were chosen. The presence of pigment reduced the saturation magnetization to 25.17 emu/g, although this value is still within the suitable range. Finally, the stability of the pigment on CoFe₂O₄ nanoparticles in water was investigated, and synthesized nanocomposite was successfully used to reveal defects.

Graphical abstract

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用于无损磁粉检测的荧光钴铁氧体纳米粒子

磁粉检测是检测工程零件中极小表面或近表面缺陷的常用方法之一。成功的缺陷检测取决于颗粒的物理特性。这项工作旨在合成钴铁氧体-荧光聚合物粒子，以检测位于更深处的更细小缺陷。为此，首先合成了钴铁氧体（CoFe2O4）纳米粒子，然后在 CoFe2O4 纳米粒子中加入了荧光颜料。使用 X 射线衍射（XRD）、扫描电子显微镜（SEM）、振动磁力计（VSM）和傅立叶变换红外光谱（FTIR）来研究各种参数的影响。选择的 CoFe2O4 纳米粒子大小约为 55 nm，具有合适的磁性。颜料的存在使饱和磁化率降至 25.17 emu/g，尽管该值仍在合适的范围内。最后，研究了 CoFe2O4 纳米粒子上的颜料在水中的稳定性，并成功地利用合成的纳米复合材料揭示了缺陷。

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来源期刊

Journal of Materials Research 工程技术-材料科学：综合

CiteScore

4.50

自引率

3.70%

发文量

362

审稿时长

2.8 months

期刊介绍： Journal of Materials Research (JMR) publishes the latest advances about the creation of new materials and materials with novel functionalities, fundamental understanding of processes that control the response of materials, and development of materials with significant performance improvements relative to state of the art materials. JMR welcomes papers that highlight novel processing techniques, the application and development of new analytical tools, and interpretation of fundamental materials science to achieve enhanced materials properties and uses. Materials research papers in the following topical areas are welcome. • Novel materials discovery • Electronic, photonic and magnetic materials • Energy Conversion and storage materials • New thermal and structural materials • Soft materials • Biomaterials and related topics • Nanoscale science and technology • Advances in materials characterization methods and techniques • Computational materials science, modeling and theory