Results 81 to 90 of about 124,930 (306)

Effect of grain refinement on enhancing critical current density and upper critical field in undoped MgB2 ex-situ tapes

, 2008
Ex-situ Powder-In-Tube MgB2 tapes prepared with ball-milled, undoped powders showed a strong enhancement of the irreversibility field H*, the upper critical field Hc2 and the critical current density Jc(H) together with the suppression of the anisotropy ...
Bernini, C., Braccini, V., Fanciulli, C., Ferdeghini, C., Larbalestier, D. C., Malagoli, A., Mossang, E., Polyanskii, A., Putti, M., Romano, G., Tropeano, M., Vignolo, M.   +11 more
core   +1 more source

Compensation of a ball end tool trajectory in complex surface milling [PDF]

, 2012
This work is consecrated to the minimising of machining errors based on a method for the compensation of the trajectory to be machined in hemispherical milling.
Baili, Maher, Bouaziz, Zoubeir, Dessein, Gilles, Smaoui, Moez, Zghal, Ali   +4 more
core   +3 more sources

Interplay Between Phase Evolution, Fe Migration, and Oxygen Redox in O3‐Type NaxFeyMn1−yO2 Cathodes

Advanced Functional Materials, EarlyView.
Why do Na‐ion battery cathodes, that are compositionally closely related, follow different structural paths during battery operation? This work shows how Fe content controls when iron atoms migrate from their original sites. Early migration locks the layers and blocks key phase transitions, whereas delayed migration permits fuller structural ...
Morten Johansen, Maria Schou Hansen, Josephine Dunker, Rebekka Klemmt, Dorthe B. Ravnsbæk   +4 more
wiley   +1 more source

Particle size reduction of Si3N4 with Si3N4 milling hardware [PDF]

The grinding of Si3N4 powder using reaction bonded Si3N4 attrition, vibratory, and ball mills with Si3N4 media was examined. The rate of particle size reduction and the change in the chemical composition of the powder were determined in order to compare ...
Freedman, M. R., Herbell, T. P., Kiser, J. D.   +2 more
core   +1 more source

Mechanically driven alloying and grain size changes in nanocrystalline Fe-Cu powders [PDF]

, 1993
Highly supersaturated nanocrystalline FexCu100-x alloys (10 less-than-or-equal-to x less-than-or-equal-to 95) have been prepared by mechanical alloying of elemental crystalline powders.
Eckert, J., Holzer, J. C., Johnson, W. L., Krill, C. E., III   +3 more
core  

Nanoscale grains, high irreversibility field, and large critical current density as a function of high energy ball milling time in C-doped magnesium diboride

, 2007
Magnesium diboride (MgB2) powder was mechanically alloyed by high energy ball milling with C to a composition of Mg(B0.95C0.05)2 and then sintered at 1000 C in a hot isostatic press. Milling times varied from 1 minute to 3000 minutes.
B J Senkowicz, D C Larbalestier, E E Hellstrom, Evetts J, Hossain M S A, J Jiang, Jiang J, Matsumoto A, P M Voyles, R J Mungall, Rodrigues D, Rowell J M, Senkowicz B J, Senkowicz B J, Wilke R H T, Wilke R H T, Y Zhu, Yamada H   +17 more
core   +1 more source

MgO-based adsorbents for CO2 adsorption: Influence of structural and textural properties on the CO2 adsorption performance [PDF]

, 2017
MgO-based adsorbents for CO2 adsorption: Influence of structural and textural properties on the CO2 adsorption performanceA series ofMgO-based adsorbents were prepared through solution–combustion synthesis and ball-milling process. The prepared MgO-based
GRANADOS CORREA, FRANCISCO, GRANADOS CORREA, FRANCISCO, GUTIERREZ BONILLA, ELVIRA, GUTIERREZ BONILLA, ELVIRA, MORALES LUCKIE, RAUL ALBERTO, MORALES LUCKIE, RAUL ALBERTO, Sánchez Mendieta, Víctor, Sánchez Mendieta, Víctor   +7 more
core   +1 more source

Effect of ball milling time on the particle size and morphology of fine copper powders

Fenmo yejin jishu
The effect of ball milling time on the particle size distribution and powder morphology of the fine copper powders prepared by high energy ball milling was studied in this paper.
ZHANG Wei, ZHANG Yongping, HE Xiaocai, DIAO Weizhi, YAN Sen   +4 more
doaj   +1 more source

High-solids enzymatic hydrolysis of ball-milled corn stover with reduced slurry viscosity and improved sugar yields

Biotechnology for Biofuels, 2020
Background High-solids enzymatic hydrolysis has attracted increasing attentions for the production of bioethanol from lignocellulosic biomass with its advantages of high product concentration, water saving, and low energy and capital costs.
Minsheng Lu, Junbao Li, Lujia Han, Weihua Xiao   +3 more
doaj   +1 more source

Laser‐Assisted Processing and Modification of Bioactive Glasses: A Review

Advanced Healthcare Materials, EarlyView.
Laser technologies provide powerful tools to process and transform bioactive glasses for advanced biomedical applications. This review discusses laser‐matter interaction mechanisms, laser surface engineering, and laser‐assisted fabrication of scaffolds and nanofibers.
Antonio Riveiro, Mario González‐Quintas, Mónica Fernández‐Arias, Jesús del Val, Félix Quintero, Rafael Comesaña, Fernando Lusquiños, Julian R. Jones, Juan Pou   +8 more
wiley   +1 more source