Computer Simulation of Mechanoactivation Process in the Planetary Ball Mill: Determination of the Energy Parameters of Milling

2000 ◽  
Vol 8 ◽  
pp. 603-608 ◽  
Author(s):  
E.V. Shelekhov ◽  
Victor V. Tcherdyntsev ◽  
Leonid Y. Pustov ◽  
S.D. Kaloshkin ◽  
I.A. Tomilin
Keyword(s):  
Computer Simulation ◽  
Ball Mill ◽  
Planetary Ball Mill ◽  
Energy Parameters

Computer Simulation of Mechanoactivation Process in the Planetary Ball Mill: Determination of the Energy Parameters of Milling

2000 ◽  
Vol 343-346 ◽  
pp. 603-608 ◽  
Author(s):  
E.V. Shelekhov ◽  
Victor V. Tcherdyntsev ◽  
Leonid Y. Pustov ◽  
S.D. Kaloshkin ◽  
I.A. Tomilin
Keyword(s):  
Computer Simulation ◽  
Ball Mill ◽  
Planetary Ball Mill ◽  
Energy Parameters

scholarly journals Characterisation of Mn0.63Zn0.37Fe2O4 powders after intensive milling and subsequent thermal treatment

2017 ◽  
Vol 49 (4) ◽  
pp. 455-467 ◽  
Author(s):  
Nebojsa Labus ◽  
Zorka Vasiljevic ◽  
Obrad Aleksic ◽  
Miloljub Lukovic ◽  
Smilja Markovic ◽  
...  
Keyword(s):  
Thermal Treatment ◽  
Oxidation Kinetics ◽  
Ball Mill ◽  
Planetary Ball Mill ◽  
Subsequent Thermal Treatment ◽  
Reduction Processes ◽  
Air Atmosphere ◽  
Subsequent Heating ◽  
Milled Powders

Commercial Mn-Zn powder (Mn0.63Zn0.37Fe2O4, 93 wt. % and Fe2O3 7 wt. %) was milled 0.5, 1, 2 and 4 hours in a planetary ball mill. The goal was to observe intensive milling influences on oxidation and reduction processes that will happen during subsequent heating. Powders were characterized with XRD, SEM and particle seizer. Subsequent heating was monitored on TGA/DTA in an air atmosphere. After compaction of the milled powders, sintering was also performed in a dilatometric device. Sintered specimens were characterized micro structurally with SEM on a fresh breakage. Obtained differential TGA diagrams suggest intensive changes during prolonged milling of the oxidation kinetics on heating. Ferrite powders changed with milling as well as with second run heating were characterized to enable determination of the potentially best ratio of milling and heating to be applied to obtain the desired microstructure.

Fast, solvent-free and highly enantioselective fluorination of β-keto esters catalyzed by chiral copper complexes in a ball mill

2017 ◽  
Vol 19 (7) ◽  
pp. 1674-1677 ◽  
Author(s):  
Yifeng Wang ◽  
Haojiang Wang ◽  
Yidong Jiang ◽  
Cheng Zhang ◽  
Juanjuan Shao ◽  
...  
Keyword(s):  
Ball Mill ◽  
Copper Complexes ◽  
Solvent Free ◽  
Planetary Ball Mill ◽  
Keto Esters ◽  
Solvent Free Conditions

A fast and highly enantioselective fluorination of β-keto esters catalyzed by diphenylamine linked bis(oxazoline)-Cu(OTf)2 complexes under solvent-free conditions has been developed using a planetary ball mill.

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