Waktu铣削NiFe2O4-NdFeO3复合材料的Mikrostruktur和Sifat Magnetik

IF 0.6 Q4 METALLURGY & METALLURGICAL ENGINEERING
A. Mulyawan, Y. Yunasfi, W. A. Adi
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引用次数: 1

摘要

电磁波和微波吸收材料的开发对于克服通信技术中的电磁波干扰和军用雷达材料的开发具有重要意义。本研究以Fe2O3、NiO和Nd2O3[UNK]为原料,通过固相反应方法成功合成了含有NiFe2O4-NdFeO3[UNK]两种不同相的复合材料。通过在10、15、20和25小时的s[UNK]范围内改变研磨[UNK]时间[UNK],然后在1200°C下烧结3小时来制备复合材料。使用[UNK]XRD[UNK](x射线[UNK]d衍射仪)进行[UNK]相鉴定,[UNK]显示[UNK]仅为NiFe2O4[UNK]和NdFeO3[UNK]。NiFe2O4[UNK]相的晶粒尺寸在59~68nm范围内,NdFeO3在62~65nm范围内。用扫描电镜(扫描电镜)观察颗粒的团聚。参考特征摘要电磁波吸收器和微波的开发对于解决通信技术和军用雷达材料中的电磁波干扰问题非常重要。在本研究中,我们能够利用Fe2O3、NiO和Nd2O3通过固体反应制备复合相NiFe2O4-NdFeO3电磁波吸收材料。复合材料样品在研磨过程中随时间变化10、15、20和25小时,然后在1200°C下脱壳3小时。用X射线衍射仪(XRD)进行了相鉴定,结果表明该相的组成仅由NiFe相2 O4和NdFeO3组成。NiFe相晶粒尺寸2O4在59~68nm范围内,NdFeO相晶粒尺寸3在62~65nm范围内。使用扫描电子显微镜(SEM)进行表面形态观察。基于使用振动样品磁强计(VSM)产生的磁性能参数的值,例如饱和磁化强度(Ms)、剩余磁化强度(Mr)和共存(Hc)高度依赖于质量分数、晶体尺寸和形成的相均匀性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Pengaruh Waktu Milling Terhadap Mikrostruktur dan Sifat Magnetik Komposit NiFe2O4-NdFeO3 [Influence Of Milling Time on Microstructure and Magnetic Properties of NiFe2O4-NdFeO3 Composite]
The development of electromagnetic wave and microwave absorbing materials was important to overcome the electromagnetic wave interference in communication technology and in the development of radar materials for military purposes. In this study the composite which contained two different phase s  of NiFe 2 O 4 -NdFeO 3  has successfully synthesized using Fe 2 O 3 , NiO, and Nd 2 O 3  as starting materials through solid state reaction method. The composites were made by varying milling  times  from 10, 15, 20, and 25 hour s  then followed by sintering process at 1200 °C for 3 hours .  Phase identification was performed using  XRD  ( x -ray  d iffractometer) which  revealed  only NiFe 2 O 4  and NdFeO 3  phase s . The crystallite size of the NiFe 2 O 4  phase is in the range of 59-68 nm, and NdFeO 3 in the range of 62-65 nm. The agglomeration of particles was observed by using  SEM ( s canning  e lectron  m icroscope). Referring to the characterization  result  of the magnetic properties by using VSM ( v ibrating  s ample  m agnetometer), it is known that the parameters of the magnetic properties such as  m agnetization saturation (Ms), magnetization remanence (Mr), and  c oercivity (Hc) are highly dependent on the mass fraction, crystallite size, and  the homogenity of the phase composition. Abstrak Pengembangan bahan penyerap gelombang elektromagnetik dan gelombang mikro sangat penting dilakukan untuk mengatasi masalah interferensi gelombang elektromagnetik pada teknologi komunikasi serta pada material radar untuk tujuan militer. Pada penelitian ini berhasil dilakukan pembuatan material penyerap gelombang elektromagnetik komposit fasa NiFe 2 O 4 -NdFeO 3 dengan menggunakan Fe 2 O 3 , NiO, dan Nd 2 O 3 melalui reaksi padatan. Sampel komposit di milling dengan variasi waktu 10, 15, 20, dan 25 jam dan selanjutnya disinter pada suhu 1200 o C selama 3 jam. Identifikasi fasa dilakukan dengan X-ray Diffractometer (XRD) menunjukan bahwa komposit hanya terdiri dari fasa NiFe 2 O 4 dan NdFeO 3 . Ukuran kristalit fasa NiFe 2 O 4 berada pada kisaran 59-68 nm, sedangkan fasa NdFeO 3 pada kisaran 62-65 nm. Pengamatan morfologi permukaan dilakukan menggunakan Scanning Electron Microscope (SEM). Berdasarkan nilai parameter sifat magnetik yang dihasilkan menggunakan Vibrating Sample Magnetometer (VSM) seperti magnetisasi saturasi(Ms), magnetisasi remanen (Mr), dan koesivitas (Hc) sangat bergantung pada fraksi massa, ukuran kristalit, dan homogenitas fasa yang terbentuk.
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来源期刊
Metalurgija
Metalurgija 工程技术-冶金工程
CiteScore
1.20
自引率
33.30%
发文量
64
审稿时长
4-8 weeks
期刊介绍: The journal Metalurgija is primary scientific periodical that publishes scientific papers (original papers, preliminary notes, reviewed papers) as well as professional papers from the area of basic, applicable and developing researching in metallurgy and boundary metallurgy areas (physics, chemistry, mechanical engineering). These papers relate to processing ferrous and non-ferrous metallurgy, treating investigating as well as testing of raw materials, semi products and products, especially in the area of improving new materials and possibilities of their implementation. The journal is the only national periodical of this kind in the Republic of Croatia and covers the scientific field of metallurgy, especially: physical metallurgy and materials; process metailurgy, (ferrous and non-ferrous); mechanical metallurgy (processing, power , etc.); related (adjoing) branches: mechanlcal engineering, chemistry, physics etc.
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