نتایج جستجو برای: milling time

تعداد نتایج: 1900666  

2016
Farhad Ostovan Khamirul Amin Matori Meysam Toozandehjani Arshin Oskoueian Hamdan Mohamed Yusoff Robiah Yunus Azmah Hanim Mohamed Ariff

The nanomechanical properties of carbon nanotubes particulate-reinforced aluminum matrix nanocomposites (Al-CNTs) have been characterized using nanoindentation. Bulk nanocomposite specimens containing 2 wt % multiwalled CNTs (MWCNTs) were synthesized by a combination of ball milling and powder metallurgy route. It has been tried to understand the correlation between microstructural evolution pa...

ربیعی, سید محمود, رجبی, محمد, صدیقی , روح الامین ,

In this study, the effect of mechanical alloying on the microstructure and phase constituents of Mg-6Al-1Zn-1Si system was investigated. To understand the thermal behavior, isothermal annealing was performed at three different temperatures of 350, 400 and 450 °C for 1h. The results showed the grain size initially decreases with increasing the milling time up to 35h and then slightly increases. ...

2016
Rodolfo Pinal

Milling is a widely used unit operation in the food and pharmaceutical industries. Raw materials for food products are manufactured into baked goods, beverages, snacks, and meal components. The insoluble fiber fractions with particle sizes greater than 50 μm negatively impact: (a) the ability to manufacture, (b) the stability of the finished product, and (c) the mouth-feel. There is a need for ...

Nanocrystalline magnesium hydride powder was synthesized by mechanical milling of MgH2 in a planetary ball mill for various times. The effect of MgH2 structure, i.e. crystallite size, lattice strain, particle size and specific surface area on the hydrogen desorption properties was investigated. A single peak of hydrogen desorption was observed for as-received powder, exhibiting an average parti...

2005
P. X.-P. LI A. K

Grain hardness characteristics for a range of corn hybrids were measured using a modified Stenvert Hardness Test (SHT). A computer-based data logging and analysis system was constructed to obtain the milling time and transient power consumption during the milling process, from which milling energy and peak power demand were calculated. In addition, the time taken to mill 17 ml of flour (resista...

2011
Andrés Bustillo Maritza Correa Aníbal Reñones

The installation of suitable sensors close to the tool tip on milling centres is not possible in industrial environments. It is therefore necessary to design virtual sensors for these machines to perform online fault detection in many industrial tasks. This paper presents a virtual sensor for online fault detection of multitooth tools based on a bayesian classifier. The device that performs thi...

2017
M. Broseghini M. D’Incau L. Gelisio N.M. Pugno P. Scardi

This paper contains data and supporting information of and complementary to the research article entitled "Effect of jar shape on high-energy planetary ball milling efficiency: simulations and experiments" (Broseghini et al.,) [1]. Calcium fluoride (CaF2) was ground using two jars of different shape (cylindrical and half-moon) installed on a planetary ball-mill, exploring different operating co...

Journal: :Faraday discussions 2014
Achim Stolle Robert Schmidt Katharina Jacob

The scale-up of the Knoevenagel-condensation between vanillin and barbituric acid carried out in planetary ball mills is investigated from an engineering perspective. Generally, the reaction proceeded in the solid state without intermediate melting and afforded selectively only one product. The reaction has been used as a model to analyze the influence and relationship of different parameters r...

2016
Akihiro Hideno

Thermo-gravimetric analyses of three cellulosic substances, namely, microcrystalline and amorphous cellulose, and treated Japanese cypress (JC) sawdust were carried out in this study. The thermal degradation temperature of crystalline cellulose decreased with increasing ball-milling time, while that of amorphous cellulose barely changed. However, small differences in the derivative thermo-gravi...

Nanostructured Al and Al-Mg (Mg 30 wt. %) powders with the mean crystallite sizes of 42 and 11 nm were prepared through the solid state ball milling technique. The milling process was performed for various times up to 12 h in argon atmosphere and the synthesized powders were in detail characterized by different techniques. The effect of milling time and Mg addition on the size, morphology, chem...

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