نتایج جستجو برای: energy ball mill the synthesized powders were studied by x

تعداد نتایج: 17215764  

Ali Dehghani Ahmadabadi Mohammad Noparast Mohammad Reza Soltani Seyyed Ziaeddin Shafaei Ziaeddin Pourkarimi

Simulation of grinding circuits has being performed from 30 years ago and is also to be more complete and powerful approach with improvement of mathematical models which simulate various processing units/machines. The modeling and simulation of various mineral processing circuits are presently performed. In order to simulate the present grinding circuits of Esfordi Phosphate processing plant, a...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس 1389

growing demands and requires of high data rate systems cause significant increase of high frequency systems for wideband communication applications. as mixers are one of the main blocks of each receivers and its performance has great impact on receiver’s performance; in this thesis, a new solution for ku-band (12-18 ghz) mixer design in tsmc 0.18 µm is presented. this mixer has high linearity a...

2013
Bo-Ra Kim Kang-Seop Yun Hee-June Jung Seung-Taek Myung Sang-Chul Jung Wooseung Kang Sun-Jae Kim

BACKGROUND Belt or wire shaped TiO2(B) particles were synthesized for lithium ion battery application by a hydrothermal and heat treatment process. In order to facilitate TiO2(B)/C composites fabrication, the synthesized TiO2(B) particles were crushed into smaller sizes by ball milling. RESULTS Ball mill treated TiO2(B) particles of less than 1.0 μm with a fraction of anatase phase, compared ...

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In this study, yellow ceramic nano pigments based on ZrO2 (zirconium oxide) were synthesized by solid state method using different value of Fe2O3 as dopant. The pigments were dispersed in solvent by a planetary ball mill and then the inks were printed on the ceramic surface using screen printing method. The samples were analyzed using scanning electron microscopy (SEM), X-ray diffraction spectr...

Lanthanum (La) doped Ceria (CeO2) has attracted considerable interest as a candidate material for thermal barrier coating (TBC) because of its low thermal conductivity and potential capability to be operated above 1250°C. In this study, La2Ce2O7 powder was synthesized through the ball mill method. The crystal structure of La3+ su...

Journal: :Scientific Reports 2021

Abstract Boron carbide powders were synthesized by mechanically activated annealing process using anhydrous boron oxide (B 2 O 3 ) and varying carbon (C) sources such as graphite carbon: The precursors for different times in a high energy ball mill reacted an induction furnace. According to the Raman analyses of sources, I(D)/I(G) ratio increased from ~ 0.25 0.99, material changed active carbon...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سیستان و بلوچستان 1390

a one dimensional dynamic model for a riser reactor in a fluidized bed catalytic cracking unit (fccu) for gasoil feed has been developed in two distinct conditions, one for industrial fccu and another for fccu using various frequencies of microwave energy spaced at the height of the riser reactor (fccu-mw). in addition, in order to increase the accuracy of component and bulk diffusion, instanta...

E. Borhani H. Ghods S.A. Manafi

Nanostructured Al composites with 2.5 wt.% aluminum nitride (AlN) were fabricated by powder metallurgy using mechanically milled aluminum powder mixed in a planetary ball mill with different particle sizes of AlN (50 nm and 1 μm) as reinforcement. After 20 h milling, the powders were die-pressed uniaxially in a steel die and then sintered at 670 °C for 2 h. The morphologies and properties of th...

2015
M. Sherif El-Eskandarany Ehab Shaban

Ultrafine MgH₂ nanocrystalline powders were prepared by reactive ball milling of elemental Mg powders after 200 h of high-energy ball milling under a hydrogen gas pressure of 50 bar. The as-prepared metal hydride powders were contaminated with 2.2 wt. % of FeCr-stainless steel that was introduced to the powders upon using stainless steel milling tools made of the same alloy. The as-synthesized ...

2009
A. Haddad M. Zergoug S. Bergheul M. Azzaz

An investigation was conducted to explore the applicability of eddy current and microwave techniques to characterize grains size variation during mechanical alloying. A series of Nanocrystalline (Fe65Co35)70Al30 samples have been prepared, these structures are prepared using mechanical alloying based on planetary ball mill under several milling conditions. Mechanical alloying is a non-equilibri...

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