Phase development during high-energy ball-milling of zinc oxide and iron – the impact of grain size on the source and the degree of contamination

2015 ◽  
Vol 44 (43) ◽  
pp. 18870-18881 ◽  
Author(s):  
G. Štefanić ◽  
S. Krehula ◽  
I. Štefanić
Keyword(s):  
Grain Size ◽  
Zinc Oxide ◽  
Ball Milling ◽  
High Energy ◽  
High Energy Ball Milling ◽  
Degree Of Contamination ◽  
Phase Development ◽  
Energy Ball ◽  
The Impact

The impact of grain size on the source and the degree of contamination.

scholarly journals Antibacterial activity of yellow zinc oxide prepared by high-energy ball milling technique

2020 ◽  
Author(s):  
Wanichaya Mekprasart ◽  
Sutee Chutipaijit ◽  
Balaji Rao Ravuri ◽  
Wisanu Pecharapa
Keyword(s):  
Zinc Oxide ◽  
Antibacterial Activity ◽  
Ball Milling ◽  
High Energy ◽  
High Energy Ball Milling ◽  
Energy Ball ◽  
Ball Milling Technique

Microstructure of 430L Stainless Steel Powders during High-Energy Ball Milling

2007 ◽  
Vol 561-565 ◽  
pp. 1251-1254
Author(s):  
Hong Wei Ni ◽  
Hang He ◽  
G.Q. Li ◽  
Wei Ting Zhan ◽  
Da Qiang Cang ◽  
...  
Keyword(s):  
Particle Size ◽  
Grain Size ◽  
Stainless Steel ◽  
Ball Milling ◽  
High Energy ◽  
High Energy Ball Milling ◽  
X Ray Diffraction ◽  
Initial Stage ◽  
Energy Ball ◽  
The Mean

Preparation of nanocrystalline 430L stainless steel powders by high-energy ball milling has been investigated. The samples were characterized by scanning electron microscope (SEM), X-ray Diffraction (XRD) and Matersizer. The SEM observation confirmed that the cold welding and fragmentation behaviors occurred during high-energy ball milling, which has important effect on the changes of the particle size. In the initial stage (0-10h), particle size increased and crystalline grain size decreased evidently. The mean particle size got to 330μm and the crystalline grain size got to 23nm for sample of 10h ball milling. In the later stage, the particle size decreased and the refinement of crystalline grain became difficult. The crystalline grain size of sample for 50h ball milling only got to 15nm.

Effect of grain size on structural and dielectric properties of barium titanate piezoceramics synthesized by high energy ball milling

2018 ◽  
Author(s):  
Narendra Kumar Verma ◽  
Sandeep Kumar Singh Patel ◽  
Dinesh Kumar ◽  
Chandra Bhal Singh ◽  
Akhilesh Kumar Singh
Keyword(s):  
Grain Size ◽  
Dielectric Properties ◽  
Barium Titanate ◽  
Ball Milling ◽  
High Energy ◽  
High Energy Ball Milling ◽  
Energy Ball

Bulk Nanocrystalline Cu Produced by High-Energy Ball Milling

2011 ◽  
Vol 682 ◽  
pp. 25-32
Author(s):  
Cai Ju Li ◽  
Xin Kun Zhu ◽  
Jing Mei Tao ◽  
H.L. Tang ◽  
T.L. Chen
Keyword(s):  
Grain Size ◽  
Ball Milling ◽  
Milling Time ◽  
High Energy ◽  
Crystal Defects ◽  
High Energy Ball Milling ◽  
Energy Ball ◽  
Bulk Nanocrystalline ◽  
Pure Cu ◽  
Ball Milling Time

The preparation, mechanical properties, grain size and thermal property of bulk nanocrystalline Cu (BNC-Cu) were investigated in this paper. BNC-Cu can be produced by in situ consolidation of pure Cu powder with high-energy ball milling at room temperature; the average grain sizes of Cu samples decreased with the increasing of ball milling time before 9 h because the grain refining velocity was bigger than the grain growing velocity in this stage. When the ball milling time was beyond 9 h, the average grain size reached a steady minimum value about 27.5 nm. The microhardness of BNC-Cu samples increased with the extending of ball milling time in the first 9 h because the dominating factor was the hardening effect caused by grain refinement and work hardening rather than softening in this stage. BNC-Cu gained its highest microhardness about 1.59GPa when the ball milling time reached 9 h. Subsequently, the microhardness of BNC-Cu slightly fluctuated around this value. Because there were numerous triple grain boundaries and the interaction among different crystal defects in BNC-Cu, BNC-Cu showed outstanding thermal stability when it was annealed in the range of 100°C to 400°C.

Crystal growth and the steady-state grain size during high-energy ball-milling

2001 ◽  
Vol 56 (3) ◽  
pp. 441-446 ◽  
Author(s):  
S Mørup ◽  
J. Z Jiang ◽  
F Bødker ◽  
A Horsewell
Keyword(s):  
Grain Size ◽  
Crystal Growth ◽  
Steady State ◽  
Ball Milling ◽  
High Energy ◽  
High Energy Ball Milling ◽  
Energy Ball

scholarly journals Effect of Grain Size on Nanostructured Fe-20 wt.%Si Alloy Powders Produced by High-energy ball milling

2005 ◽  
Vol 12 (5) ◽  
pp. 362-368
Author(s):  
Se-Hoon Kim ◽  
Young Jung Lee ◽  
Baek-Hee Lee ◽  
Kyu Hwan Lee ◽  
Young Do Kim
Keyword(s):  
Grain Size ◽  
Ball Milling ◽  
High Energy ◽  
High Energy Ball Milling ◽  
Energy Ball

Synthesis of Ag-Cu-Sn Nanocrystalline Alloys as Intermediate Temperature Solder by High Energy Ball Milling

2009 ◽  
Vol 79-82 ◽  
pp. 449-452 ◽  
Author(s):  
Liang Feng Li ◽  
Tai Qiu ◽  
Jian Yang ◽  
Yong Bao Feng
Keyword(s):  
Grain Size ◽  
Ball Milling ◽  
High Energy ◽  
Nanocrystalline Alloys ◽  
High Energy Ball Milling ◽  
Intermediate Temperature ◽  
Melting Points ◽  
Small Particles ◽  
Average Grain Size ◽  
Energy Ball

To obtain intermediate temperature alloy solders with melting temperature of 400~600°C, (Ag-Cu28)-25Sn and (Ag-Cu28)-30Sn alloys were prepared by high energy ball milling. Ag-Cu-Sn nanocrystalline alloys have been obtained after milling for 40h. XRD results show that the (Ag-Cu28)-25Sn alloy consists of Ag4Sn and Cu3Sn, and the (Ag-Cu28)-30Sn alloy contains Ag4Sn, Cu3Sn and Cu6Sn5. The small polydispersed particles with size ranging from 1μm to about 25μm are observed from the (Ag-Cu28)-30Sn alloys milled for 40h by SEM. A large amount of small particles comprised of two or three grains are commonly observed by HRTEM, and average grain size is about 17.50nm. DSC results indicate that the melting points of the (Ag-Cu28)-25Sn and (Ag-Cu28)-30Sn alloys milled for 40h are 548.5°C and 539.3°C, respectively.

scholarly journals Pulsed Current Activated Consolidation of Nanostructured Fe3Al and Its Mechanical Property

2011 ◽  
Vol 2011 ◽  
pp. 1-5 ◽  
Author(s):  
Tae-Wan Kim ◽  
In-Yong Ko ◽  
Jung-Mann Doh ◽  
Jin-Kook Yoon ◽  
In-Jin Shon
Keyword(s):  
Mechanical Property ◽  
Grain Size ◽  
Ball Milling ◽  
High Energy ◽  
High Energy Ball Milling ◽  
Sintering Behavior ◽  
Pulsed Current ◽  
Activated Sintering ◽  
Energy Ball ◽  
Sintering Method

A nanopowder ofFe3Alwas synthesized from 3Fe and Al by high-energy ball milling. A dense nanostructuredFe3Alwas consolidated by pulsed current activated sintering method within 2 minutes from mechanically synthesized powders ofFe3Aland horizontally milled powders of 3Fe+Al. The grain size, sintering behavior, and hardness ofFe3Alsintered from horizontally milled 3Fe+Al powders and high-energy ball milledFe3Alpowder were compared.

Characteristics of Er2O3 Added ZnO-Based Varistor Ceramics

2016 ◽  
Vol 880 ◽  
pp. 105-109 ◽  
Author(s):  
Samarpita Roy ◽  
Tapatee Kundu Roy ◽  
Debdulal Das
Keyword(s):  
Grain Size ◽  
Ball Milling ◽  
Nonlinear Coefficient ◽  
High Energy ◽  
High Energy Ball Milling ◽  
Breakdown Field ◽  
Electrical Characteristics ◽  
Densification Process ◽  
Grain Coarsening ◽  
Energy Ball

This study examines the effect of Er2O3 addition (0 to 2.0 mol.%) on microstructure and electrical characteristics of ZnO-based varistor ceramics prepared by high energy ball milling and sintering at 1200 °C for 1 h. With increasing Er2O3 content, the densification process diminishes marginally, but the grain size reduces dramatically due to the formation of Er-rich phases that inhibit grain coarsening specifically when the amount of Er2O3 addition is above 0.1 mol.%. The ZnO-based varistor modified with incorporation of 0.5 mol.% Er2O3 exhibits excellent varistor properties, since the breakdown field is increased from 1324 to 2320 V cm-1 and the nonlinear coefficient is enhanced from 23.1 to 27.4 when compared with the un-added ones.

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