Particle morphology control of metal powder with various experimental conditions using ball milling

2021 ◽  
Author(s):  
Amgalan Bor ◽  
Battsetseg Jargalsaikhan ◽  
Khulan Uranchimeg ◽  
Jehyun Lee ◽  
Heekyu Choi
Keyword(s):  
Ball Milling ◽  
Metal Powder ◽  
Particle Morphology ◽  
Morphology Control ◽  
Experimental Conditions

scholarly journals Hydrothermal Synthesis and Particle Morphology Control of K0.8Li0.27Ti1.73O4 with Lepidocrocite-like Structure

2016 ◽  
Vol 63 (4) ◽  
pp. 185-191
Author(s):  
Yuichi YAMAMOTO ◽  
Teruhiko SETSU ◽  
Takafumi KUSUNOSE ◽  
Kazunari SHINAGAWA ◽  
Qi FENG
Keyword(s):  
Hydrothermal Synthesis ◽  
Particle Morphology ◽  
Morphology Control

Effect of High-Energy Ball Milling on Microstructure and Microwave Absorbing Properties of NdFe Material

2011 ◽  
Vol 311-313 ◽  
pp. 1281-1285 ◽  
Author(s):  
Pei Hao Lin ◽  
Lei Wang ◽  
Shun Kang Pan ◽  
Hua Mei Wan
Keyword(s):  
Ball Milling ◽  
Particle Morphology ◽  
High Energy ◽  
High Energy Ball Milling ◽  
X Ray ◽  
Microwave Absorbing Properties ◽  
Absorbing Materials ◽  
Milling Method ◽  
Energy Ball ◽  
Microwave Absorbing

The NdFe magnetic absorbing materials were prepared by rapid solidification and high-energy ball milling method. The effect of high-energy ball milling on particle morphology, organizational structure and microwave absorbing properties of NdFe magnetic absorbing materials were analyzed with the aid of X-ray diffractometer, scanning electron microscope and vector network analysis. The results show that the Nd2Fe17 and α-Fe phase are refined, the particles become smaller and thinner; the span-ratio of the particles increases along with time during the process of high-energy ball milling; and meanwhile, the frequency of absorbing peak reduces. The absorbing bandwidth broadens as the increase of the time of ball milling, except that of 48h.The minimum reflectance of the powder decreases from -22dB to - 44dB under the circumstances that the time of high energy ball milling reaches 48h and the thickness of the microwave absorbing coating is 1.5mm. But it rebounds to about - 6dB when the time of ball milling reaches 72h.

Preparation of La-Mg-Ni Hydrogen Storage Composite Alloys by Mechanical Alloying

2013 ◽  
Vol 807-809 ◽  
pp. 2707-2712 ◽  
Author(s):  
Shi Jian Yan ◽  
Xin Wei Zou ◽  
Min Gang Zhang
Keyword(s):  
Hydrogen Storage ◽  
Mechanical Alloying ◽  
Ball Milling ◽  
Metal Powder ◽  
Hydrogen Desorption ◽  
Hydrogen Atmosphere ◽  
Hydrogen Storage Alloys ◽  
Milling Parameters ◽  
Multi Phase ◽  
Mg Content

LaNi5-xwt%Mg hydrogen storage alloys with different Mg content were made from pure La, Mg and Ni metal powder by mechanical alloying, selecting appropriate ball-milling parameters in 0.4MPa hydrogen atmosphere. The characterizations for hydrogen storage alloy show that a multi-phase alloy composed of MgH2, LaH3, Mg2NiH4 and Ni was obtained, the alloy have two hydrogen desorption temperature range, and the alloy with 25wt% Mg content can desorb hydrogen up to 4.02wt%.

Effect of surfactant molecular weight on particle morphology of SmCo5 prepared by high energy ball milling

2012 ◽  
Vol 111 (7) ◽  
pp. 07A724 ◽  
Author(s):  
C. A. Crouse ◽  
E. Michel ◽  
Y. Shen ◽  
S. J. Knutson ◽  
B. K. Hardenstein ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Ball Milling ◽  
Particle Morphology ◽  
High Energy ◽  
High Energy Ball Milling ◽  
Energy Ball

Zinc Ferrite Powder Synthesized by High Energy Reactive Ball Milling

2011 ◽  
Vol 672 ◽  
pp. 149-152 ◽  
Author(s):  
Traian Florin Marinca ◽  
Ionel Chicinaş ◽  
Virgiliu Călin Prică ◽  
Florin Popa ◽  
Bogdan Viorel Neamţu
Keyword(s):  
Ball Milling ◽  
Zinc Ferrite ◽  
Particle Morphology ◽  
High Energy ◽  
Planetary Mill ◽  
Ferrite Powder ◽  
X Ray Diffraction ◽  
Ferrite Formation ◽  
Starting Mixture ◽  
Zno Powder

The nanocrystalline zinc ferrite (ZnFe2O4) powder was synthesized by high energy reactive ball milling (RM) in a planetary mill. As starting materials a mixture of commercial zinc oxide (ZnO) powder and iron oxide (Fe2O3) powder was used. The starting mixture was milled for different periods of time, up to 30 h. The milled powders were annealed for 4 h at 350 oC in order to eliminate the internal stress and to finish the solid state reaction of ferrite formation. Zinc ferrite formation was investigated by X-ray diffraction. The obtained powder has a mean crystallite size of 12 nm after 20 h of milling. Using scanning electron microscopy (SEM) the particle morphology was studied. Particles size range of the powders was also determined using a laser particle size analyser.

Nickel Ferrite Powder Obtained by High Energy Reactive Ball Milling

2011 ◽  
Vol 672 ◽  
pp. 145-148 ◽  
Author(s):  
Traian Florin Marinca ◽  
Ionel Chicinaş ◽  
Virgiliu Călin Prică ◽  
Florin Popa
Keyword(s):  
Ball Milling ◽  
Nickel Ferrite ◽  
Particle Morphology ◽  
High Energy ◽  
Internal Stresses ◽  
Ferrite Powder ◽  
Chemical Homogeneity ◽  
Air Atmosphere ◽  
Mean Size ◽  
Ball Milling Technique

Nanocrystalline nickel ferrite powder was obtained using high energy reactive ball milling technique. Nickel oxide (NiO) and iron oxide (Fe2O3) powders were used as starting material. Milling was performed in air atmosphere using a planetary ball mill. Milling time was up to 30 hours. The product of milling was annealed at 350 oC for 4 hours in order to eliminate the internal stresses and finish the solid state reaction. X-ray diffraction analysis was used to study the nickel ferrite formation. A nanocrystallite mean size of 10 nm was found after 24 hours of milling. Using scanning electron microscopy (SEM) and energy dispersive spectrometry (EDX) the particle morphology and the chemical homogeneity were studied. It was found that the obtained product has particle size in range of micron and submicron.

Synthesis and magnetic character of Fe–N/BN nanocomposite

2021 ◽  
Author(s):  
Haiyan Wang ◽  
Changchun Wang ◽  
Lele Song ◽  
Li Liu
Keyword(s):  
Surface Energy ◽  
Saturation Magnetization ◽  
Ball Milling ◽  
Industrial Application ◽  
Magnetic Nanocomposite ◽  
Experimental Conditions ◽  
Reaction Method ◽  
Grain Sizes ◽  
Key Factor

In this work, Fe2N magnetic nanocomposite was synthesized via an in-situ reaction method of ball milling. In this method, Fe and h-BN were used as iron source and nitrogen source, respectively. We found that ball milling could increase the surface energy and make the sample to be amorphous, which is the key factor in synthesizing Fe2N nanocomposite. The as-synthesized nano-sized Fe–N could disperse in the BN matrix uniformly. It is worth noting that we can obtain Fe2N with different grain sizes by controlling the experimental conditions. The saturation magnetization of Fe2N was measured and the value is about 0.03 emu/g. The excellent properties of Fe2N magnetic nanocomposite suggest that Fe2N magnetic nanocomposite could be widely used in industrial application.

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