scholarly journals Effects of ball milling on powder particle boundaries and properties of ODS copper

2021 ◽  
Vol 40 (1) ◽  
pp. 361-369
Author(s):  
Pei Li ◽  
Cunguang Chen ◽  
Chenzeng Zhang ◽  
Na Xiao ◽  
Haifeng Zhang ◽  
...  
Keyword(s):  
Ball Milling ◽  
Powder Particle ◽  
International Association ◽  
Particle Surface ◽  
Milling Process ◽  
Rockwell Hardness ◽  
High Concentration ◽  
Metallurgical Bonding ◽  
Comprehensive Performance ◽  
Powder Particles

Abstract Al2O3 dispersion-strengthened (ODS) copper has an excellent comprehensive performance due to the strong hindrance of the high concentration nano-Al2O3 to the dislocations inside copper grains. However, the processability of ODS copper is seriously deteriorated, which is caused by the presence of unfavorable microlevel Al2O3 particles along powder particle boundaries. In this study, a strategy of ball-milling-induced impurity removal is adopted to surmount the dilemma. It was found that the ball milling process can significantly weaken the formation of large Al2O3 particles in the primary boundaries. However, due to the activation of the powder particle surface, the metallurgical bonding between the powder particles is strengthened. The results showed that the ball-milled samples exhibited the optimal properties, including the ultimate tensile strength of 488 ± 3 MPa, elongation of 18.7 ± 0.7%, reduction in the area of 46.8 ± 1.2%, 82.2 ± 0.3 Rockwell Hardness measured on the B scale (HRB), and electrical conductivity of 77.2 ± 0.1% International Association of Classification Societies (IACS).

Study on the Precursory Powder for Bi-2223 Tape

2007 ◽  
Vol 546-549 ◽  
pp. 1961-1966 ◽  
Author(s):  
H.L. Zheng ◽  
X.Y. Xu ◽  
X.M. Xiong ◽  
G.Q. Liu ◽  
Q.B. Hao ◽  
...  
Keyword(s):  
Particle Size ◽  
Ball Milling ◽  
Phase Formation ◽  
Powder Particle ◽  
Phase Distribution ◽  
Milling Process ◽  
Superconducting Phases ◽  
Ball Milling Process

The Phase formation in the precursory powder, the particle size and the homogenization phase distribution have been investigated in this paper. Size of the powder particle has been reduced by a ball-milling process. The effects of the ball-milling on the characteristic of the powder have been studied by XRD. The modality and distribution of 2212, Ca2CuO3 and CuO in the powder were observed by SEM. Results show that the Ca2CuO3 particle ground was about 200nm in size. The precursory powder with the non-superconducting phases distributed uniformly in the mixture powder was obtained for Bi-2223 long tape.

scholarly journals Effect of Ball Size on the Microstructure and Morphology of Mg Powders Processed by High-Energy Ball Milling

Metals ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 1621
Author(s):  
Jesus Rios ◽  
Alex Restrepo ◽  
Alejandro Zuleta ◽  
Francisco Bolívar ◽  
Juan Castaño ◽  
...  
Keyword(s):  
Ball Milling ◽  
Morphological Evolution ◽  
Weight Ratio ◽  
High Energy ◽  
Milling Process ◽  
High Energy Ball Milling ◽  
X Ray Diffraction ◽  
Ball Size ◽  
Powder Particles ◽  
Energy Ball

Commercial powders of pure magnesium were processed by high-energy ball milling. The microstructural and morphological evolution of the powders was studied using scanning electron microscopy (SEM), energy dispersive spectrometry (EDX) and X-ray diffraction (XRD). From the results obtained, it was determined that the ball size is the most influential milling parameter. This was because balls of 1 mm diameter were used after a previous stage of milling with larger balls (i.e., 10 and 3 mm). The powder particles presented an unusual morphology with respect to those observed in the Mg-milling literature and recrystallization phenomena. Moreover, the result strongly varied depending on the ball-to-powder weight ratio (BPR) used during the milling process.

Hydrogen Storage in Titanium-Magnesium-Nickel Mixtures

2002 ◽  
Vol 753 ◽  
Author(s):  
Janice K. Lomness ◽  
Michael D. Hampton ◽  
Lucille A. Giannuzzi
Keyword(s):  
Ball Milling ◽  
Hydrogen Uptake ◽  
Milling Process ◽  
Mechanically Alloyed ◽  
Refined Microstructure ◽  
Hydrogen Interaction ◽  
Microstructural Morphology ◽  
Powder Particles ◽  
Hydrogen Mixtures ◽  
Time And Energy

ABSTRACTThe hydrogen interaction properties of mechanically alloyed mixtures of Ti, Mg, and Ni have been shown to be strongly dependent on the time and energy of ball milling. Mixtures ball milled at a ball to powder ratio (by mass) of 20:1 were able to absorb 3–4 wt% hydrogen. Mixtures ball milled at a ball to powder ratio of 70:1 were able to absorb up to 11 wt% hydrogen. The dependence of hydrogen uptake on ball milling time and energy is shown to be related to the microstructural morphology of the ball milled powders. The original Mg powder particles were heavily deformed by the ball milling process and contained nano-sized inclusions of both Ti and Ni at the surface. The higher energy ball milled samples showed a more refined microstructure and a greater hydrogen capacity. In addition, there was an inverse relationship between the amount of hydrogen uptake and the size of inclusions at the surface of the particles.

The Impact of Ball Milling Process Parameters on the Preparation of Nano Silicon Powder

2021 ◽  
Vol 217 (1) ◽  
pp. 255-264
Author(s):  
Xiaomeng Zhu ◽  
Xiaolan Cai ◽  
Shuang Zhang ◽  
Lei Wang ◽  
Xudong Cui
Keyword(s):  
Ball Milling ◽  
Process Parameters ◽  
Silicon Powder ◽  
Milling Process ◽  
Ball Milling Process ◽  
Nano Silicon ◽  
The Impact

Superthermostability of nanoscale TIC-reinforced copper alloys manufactured by a two-step ball-milling process

2015 ◽  
Vol 95 (35) ◽  
pp. 4035-4053 ◽  
Author(s):  
Fenglin Wang ◽  
Yunping Li ◽  
Xiandong Xu ◽  
Yuichiro Koizumi ◽  
Kenta Yamanaka ◽  
...  
Keyword(s):  
Ball Milling ◽  
Copper Alloys ◽  
Milling Process ◽  
Ball Milling Process

Scalable synthesis of silicon nanoplate-decorated graphite toward advanced lithium-ion battery anodes

Nanoscale ◽  
2021 ◽  
Author(s):  
Haimei Li ◽  
Xianglong Li ◽  
Denghui Wang ◽  
Siyuan Zhang ◽  
Wenqiang Xu ◽  
...  
Keyword(s):  
Lithium Ion Battery ◽  
Ball Milling ◽  
Lithium Battery ◽  
High Capacity ◽  
Lithium Ion ◽  
Milling Process ◽  
Cyclic Stability ◽  
Graphite Electrodes ◽  
Ball Milling Process ◽  
Scalable Synthesis

A silicon nanoplate-decorated graphite design is developed for lithium battery anodes via a simple ball milling process. The resultant silicon-graphite electrodes show high cyclic stability with high capacity, superior rate...

Preparation of graphene oxide by dry planetary ball milling process from natural graphite

RSC Advances ◽  
2016 ◽  
Vol 6 (15) ◽  
pp. 12657-12668 ◽  
Author(s):  
Pranita Dash ◽  
Tapan Dash ◽  
Tapan Kumar Rout ◽  
Ashok Kumar Sahu ◽  
Surendra Kumar Biswal ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Ball Milling ◽  
High Energy ◽  
Milling Process ◽  
Graphene Oxides ◽  
Natural Graphite ◽  
Ball Milling Process ◽  
Planetary Ball Milling

Graphene oxides (GO) with different degrees of oxidation have been prepared by an in-house designed horizontal high energy planetary ball milling process.

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