2014-6-1 Surfactant-assisted high energy ball milling (HEBM) is a widely used technique for producing nanostructured magnetic materials with oleic acid (OA) being the most commonly
احصل على السعر
1995-2-1 ELSEVIER Materials Chemistry and Physics 40 (1995) 21-29 MATERIALS CHEMISTRY AND PHYSICS Surfactant-assisted ball milling of BaFe12O19 ferrite dispersion
احصل على السعر
2013-11-1 Surfactant-assisted high energy ball milling (HEBM) is usually used for the preparation of separated Sm–Co-based hard nanoparticles. In this study, Sm2Co17 hard
احصل على السعر
Surfactant Assisted Ball Milling: A Simple Top down Approach for the Synthesis of Controlled Structure Nanoparticle. Article Preview. Abstract: The unlimited
احصل على السعر
2 M. Ullah, Md.E. Ali and Sh.B.A. Hamid a suitable medium in a high energy ball mill where the balls roll down the surface of the chamber in a series of parallel layers and energizes the powder
احصل على السعر
2015-11-1 Ball Milling; Article. Surfactant-assisted ball milling A new technique for preparing rare-earth permanent magnet nanomaterials. November 2015; Materials China 34(11)
احصل على السعر
2015-10-21 We herein exploit the advantages of surfactant assisted-high energy ball milling (SA-HEBM) for the processing of Mn–Al alloy. In this method, a combination of two surfactants,
احصل على السعر
2015-1-1 A surfactant-assisted high energy ball milling technique to produce colloidal nanoparticles and nanocrystalline flakes in Mn–Al alloys January 2015 RSC Advances 5:92406–92417
احصل على السعر
Surfactant Assisted Ball Milling: A Simple Top down. Ali, Md. Eaqub and Ullah, Mahbub and Ma'amor, Azman and Hamid, Sharifah Bee Abd (2013) Surfactant Assisted Ball Milling: A
احصل على السعر
2017-3-15 SEM analysis shows that surfactant assisted high energy ball milling initially reduces rapidly the average particle size from the first milling hour, reaching approximately 500
احصل على السعر
2 M. Ullah, Md.E. Ali and Sh.B.A. Hamid a suitable medium in a high energy ball mill where the balls roll down the surface of the chamber in a series of parallel layers and energizes the powder
احصل على السعر
Stirred ball mill grinding is advantageous for nanoparticle production over other fine grinding techniques owing to its easy operation, simple construction, high size reduction rate and relatively low energy consumption. The aim of this systematic review is to represent the basic concept and applications of mechanical milling in the
احصل على السعر
A surfactant-assisted high energy ball milling technique to produce colloidal nanoparticles and nanocrystalline flakes in Mn–Al alloys. P. Saravanan * a, D. Deepika a, Jen-Hwa Hsu * b, V. T. P. Vinod c, Miroslav Černík c and S. V. Kamat a a Defence Metallurgical Research Laboratory, Hyderabad-500058, India. E-mail: psdrdo@gmail; [email protected] b Department of
احصل على السعر
2015-10-21 We herein exploit the advantages of surfactant assisted-high energy ball milling (SA-HEBM) for the processing of Mn–Al alloy. In this method, a combination of two surfactants, such as oleic acid and oleylamine, was used along with a solvent, n-heptane, during milling.The use of the SA-HEBM process yielded two different products: a sediment powder consisting of sub
احصل على السعر
The unlimited applications of nanoparticles in human life are increasing day by day. Nanoparticles have drawn attention among researchers from academia to industry due to its large specific surface area, high chemical reactivity, physical affinity and interesting optical, electrical and magnetic properties. These properties of nanoparticles stimulate researchers to reduce
احصل على السعر
2013-12-15 Anisotropic magnetic SmCo5 nanoflakes have been fabricated by surfactant-assisted ball milling (SABM) using hardened steel balls of one of the following sizes: 4, 6.5, 9.5 and 12.7 mm in diameters.
احصل على السعر
2017-2-27 Surfactant-assisted high energy ball milling (SABM) method has emerged as an effective technique for preparing nanoparticles and nanoflakes of rare-earth-transition metal (RE-TM) alloys, especially for Nd-Fe-B [1–3] and Sm-Co [4–6].Controlling the size, morphology and properties of the as-prepared powders can be achieved by adjusting the parameters in the
احصل على السعر
2015-8-14 Lately, the surfactant-assisted ball milling (SABM) method has been found efficient in the textured nanostructured rare earth compound synthesis 4. However, the texture degree and coercivity still have much room for improvement. It is known that most of the magnetic materials are brittle when the size of the particles is large, and with the
احصل على السعر
2018-7-25 The synthesis of hard magnetic nanoparticles based on the Nd2Fe14B system has been studied by means of surfactant-assisted ball milling technique. The XRD results show that, in the range of milling time employed (5, 10 and 20 h), a majority of Nd2Fe14B phase was detected in the nanoparticles, indicating that no oxidation took place during milling. Mössbauer
احصل على السعر
from publication: Structure and magnetism of SmCo5 nanoflakes prepared by surfactant-assisted ball milling with different ball sizes Anisotropic magnetic SmCo5 nanoflakes have been fabricated by
احصل على السعر
Stirred ball mill grinding is advantageous for nanoparticle production over other fine grinding techniques owing to its easy operation, simple construction, high size reduction rate and relatively low energy consumption. The aim of this systematic review is to represent the basic concept and applications of mechanical milling in the
احصل على السعر
The unlimited applications of nanoparticles in human life are increasing day by day. Nanoparticles have drawn attention among researchers from academia to industry due to its large specific surface area, high chemical reactivity, physical affinity and interesting optical, electrical and magnetic properties. These properties of nanoparticles stimulate researchers to reduce
احصل على السعر
1994-3-1 @article{osti_40195, title = {Magnetic properties of Ba-ferrite powders prepared by surfactant assisted ball milling}, author = {Kaczmarek, W A and Ninham, B W}, abstractNote = {Magnetic properties of Ba-ferrite processed by a novel method: surfactant assisted low energy ball milling, are discussed. By using cationic and anionic surfactants at pH values above and
احصل على السعر
2014-3-18 Macrocrystalline niobium monoxide powder has been disintegrated to an average nanoparticle size of 20 ± 10 nm by high-energy milling in a planetary ball mill. X-ray diffraction data showed that, after milling, the particles retained an ordered cubic crystal structure with space group \(Pm\bar 3m\),containing structural vacancies in both the
احصل على السعر
2011-8-3 Anisotropic bonded magnets are fabricated by surfactant-assisted ball milling in a magnetic field and magnetic field alignment of the milled chip-like nanoparticles of the Sm–Co and Nd–Fe–B materials. It is found that the application of magnetic fields during the ball milling strengthens the anisotropy of the chips and therefore improves
احصل على السعر
by measuring the ball weight loss upon milling and it was found that the weight loss of the balls is less than 0.2% after 20 h ball milling when optimized amounts of surfactants and heptane were used. Figure 1. TEM images of Sm 2Co 17 nanoparticles ground for 20 h in heptane with surfactants: (a) the as-milled nanoparticles with sizes
احصل على السعر
The synthesis of hard magnetic nanoparticles based on the Nd2Fe14B system has been studied by means of surfactant-assisted ball milling technique. The XRD results show that, in the range of milling time employed (5, 10 and 20 h), a majority of Nd2Fe14B phase was detected in the nanoparticles, indicating that no oxidation took place during milling. Mössbauer spectra were
احصل على السعر
powders were milled by using the high energy ball milling under vacuum atmosphere with surfactant-assisted material. The experiments were performed to optimize the milling parameters regarding the particle size and magnetic properties of the powders. Key words: Nd 15 Fe 77 B 8 magnetic alloy, Melt spinning, Surfactant-assisted)
احصل على السعر
from publication: Structure and magnetism of SmCo5 nanoflakes prepared by surfactant-assisted ball milling with different ball sizes Anisotropic magnetic SmCo5 nanoflakes have been fabricated by
احصل على السعر
2015-8-14 The high coercivity of 26.2 kOe for SmCo5 nanoflakes are obtained by multistep (three steps) surfactant-assisted ball milling. The magnetic properties, phase structure and morphology are studied
احصل على السعر
منزل