قائمة الطعام
Ball milling mechanicall y refines the size of bulk elements into desired size which is a function of milling time in this study. During the initial stage of ball milling, large iron particles trapped between the balls are broken down because of the compressive forces formed due to collision of balls as in Fig. 1a. This local mechanical stress mediated micro-forging altered the shape of the ...
Saquinavir is an anti-retroviral drug with very low oral bioavailability (e.g. 0.7-4.0%) due to its affinity toward efflux transporters (P-gp) and metabolic enzymes (CYP3A4). The aim of this study was to characterize the effects of high-energy ball milling on saquinavir solid-state characteristics and aqueous solubility for the design of effective buccal drug delivery systems.
Saquinavir is an anti-retroviral drug with very low oral bioavailability (e.g. 0.7-4.0%) due to its affinity toward efflux transporters (P-gp) and metabolic enzymes (CYP3A4). The aim of this study was to characterize the effects of high-energy ball milling on saquinavir solid-state characteristics a …
We present a study of nanostructured Cu-Ag material obtained by low temperature ball milling. The microstructural characterization is carried out using a wide variety of transmission electron microscopy (TEM) techniques from conventional dark-field imaging, selected area diffraction and energy dispersive X-ray spectrometry (EDS) to more modern techniques of scanning TEM high-angle dark-field ...
The microstructure evolution and coercivity development in ball milled Sm (Co,Cu,Fe,Zr)z powders have been investigated by TEM, SEM, HRTEM, and VSM. The fully heat-treated Sm(Co bal,Fe0.1,Cu 0.08,Zr 0.03 )7.5 and Sm(Co bal,Fe 0.1,Cu 0.08,Zr 0.03 )8.3 alloys were ball milled to powders with different ball milling rates and times.
Microstructure characterization and phase transformation kinetics of a high-energy ball-milled and post-annealed stoichiometric (1:1 mol%) m-ZrO 2 and amorphous (a-) SiO 2 powder mixture have been investigated by Rietveld analysis of X-ray powder diffraction data. The experimental results reveal that the ball-milling of stoichiometric powder results in the formation of c-ZrO 2 /t-PSZ phases …
Effect of ball-milled treatment done by high-frequency oscillatory-type mill for different time on structure and antiobesity of konjac flour was investigated. Konjac flour granules became smoother and remained its original shape in the first 1.5 h treatment, however its grain size changed from 657.3 (d50) to 23.7 μm (d50) after 4 h treatment, which meant that the pulverized model of konjac ...
The results indicated that amongst the three powders, the Al-Al 2 O 3 composite powder ball-milled for 20 h exhibited the best flowability followed by the Al ball-milled for 20 h, while the raw Al offered poor flowability with a Carr index of 25.5%. This can be explained by two factors, the first of which is the powder's morphological evolution.
Structural and optical characterization of ball-milled copper-doped bismuth vanadium oxide (BiVO 4)† Victor-Ishrayelu Merupo, ab Subramaniam Velumani,* a …
Many research topics in condensed matter research, materials science and the life sciences make use of crystallographic methods to study crystalline and non-crystalline matter with neutrons, X-rays and electrons. Articles published in Journal of Applied Crystallography focus on these methods and their use in identifying structural and diffusion-controlled phase transformations, structure ...
Ball milled particles <106 μm were characterized by their irregular morphology, and the maintenance of the glassy phase was confirmed from the XRD and DSC results (Fig. 3, Fig. 4, respectively). Albeit irregular compared to gas-atomized powders, the ball milled ones displayed better morphology than the splat precursors, which allow to consider ...
Characterization of Ball-Milled Bamboo-Based Activated Carbon Treated with KMnO4 and KOH as Activating Agents. Qanytah Qanytah, Khaswar Syamsu, Farah Fahma, Gustan Pari. Abstract. Bamboo-based activated carbon was made using the activating agents KOH and KMnO4 at high temperature. This study examined the ability of unmilled and ball-milled ...
Microstructural Characterization of Ball Milled Co 60 Fe 18 Ti 18 Nb 4 Alloys and Their Photocatalytic Performance Hasan Eskalen, Vocational School of Health Services, Department of Opticianry, Kahramanmaraş Sütçu İmam University, Kahramanmaraş, Turkey. Search for …
Materials Chemistry and Physics 77 (2002) 153–164 Microstructure characterization of polymorphic transformed ball-milled anatase TiO2 by Rietveld method H. Dutta a, P. Sahu b, S.K. Pradhan a, M. De b,∗ a Department of Physics, The University of Burdwan, Golapbag, Burdwan 713104, West Bengal, India b Department of Materials Science, Indian Association for the Cultivation of Science ...
1 Microstructural characterization of ball-milled metal matrix nanocomposites (Cr, Ni, Ti)-25 wt. % (Al 2 O 3np, SiC np) Y. Afkham 1, R. Azari Khosroshahi
Microstructural characterization of ball-milled α-Al 2 O 3 : bimodal size distribution and shape anisotropy. Apurba Deb. IntroductionAlumina is one of the most important ceramics and is used extensively in structural applications. Among its various phases, corundum (-Al 2 O 3 ) is generally preferred due to its high chemical and thermal stability.
The annealed powders are wet ball milled with 0.5 mm ZrO 2 balls until reaching the nanometric size. The most important advantage is the possibility of obtaining stable and reproducible water dispersed nanometric PET in a shorter time compared to the time reported in the literature required for milling thermoplastic polymers.
In this work, we report the application of low energy ball milling in mixing nanoparticles and micron 316 L powder. With this method, 0.3 and 1.0 wt% Y 2 O 3 nanoparticles can be uniformly distributed on the surface of 316 L powder with the parameters of ball-to-powder …
(PDF) Microstructure characterization of ball . Materials Chemistry and Physics 86 (2004) 284–292 Microstructure characterization of ball milled prepared nanocrystalline perovskite CaTiO3 by Rietveld method S.K. Manik, S.K. Pradhan∗ Department of Physics, The University of Burdwan, Golapbag, Burdwan-713104, West Bengal, India Received 4 December 2003; received in revised …
Based on the advanced characterization, the origin of lignin heterogeneity in ball milled fibers is proposed to result from the uneven distribution of the applied mechanical energy, where synergistic effects between crystalline and amorphous states play a central role.
Characterization of crystalline structure of ball-milled nano-Ni–Zn-ferrite by Rietveld method S. Bid, S.K. Pradhan∗ Department of Physics, The University of Burdwan, Golapbag, Burdwan 713104, West Bengal, India Received 9 April 2003; received in revised form …
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OSTI.GOV Technical Report: Characterization of ball-milled B/CaCrO/sub 4/. Characterization of ball-milled B/CaCrO/sub 4/ Full Record; Other Related Research
This study reports the synthesis and characterization of Al-alloy/SiCp metal matrix nanocomposite, synthesized using high energy ball milling followed by sintering employing spark plasma sintering (SPS). In the present investigation, Al 5083 alloy …
Homogenous Ni–Al2O3 nanocomposite powders with uniform distribution of Al2O3 nanoparticles were obtained through ball milling of Ni and Al2O3 powders for 9 hours. Field emission scanning electron microscopy and X-ray mapping were used to characterize the ball milled powders and Al2O3 nanoparticles' dispersion, respectively. The evolution of crystallite size and lattice strain in the ...
Furthermore, ball-mill extrusion increased the adsorption capacity of BC at all pH values by 14-fold, on average, but BC ball milled with magnetite had even greater adsorption capacity (27 ...
/ Methodologies for characterization of smearing micro geometry on ball end milled tool steel surfaces. Paper presented at 2018 World Congress on Micro and …
For characterization of the ball-milled powders, X-ray diffraction (XRD) and transmission electron microscopy (TEM) were applied. XRD investigations showed that the diffraction pattern of the powder mixture was drastically changed as the result of ball milling: The position, intensity and profile of some diffraction lines changed substantially ...
This review critically evaluates the synthesis, characterization, and application of ball-milled biochar nanomaterials based on the latest findings and offers insights into opportunities and future prospects related to sustainable and facile synthesis of biochar-based novel materials for achieving sustainable development goals. Expand
Microstructure characterization of ball milled powders was also made by HRTEM operated at 200 kV (Model HR-TEM 2100F and 2010, JEOL). A pinch of sample was dispersed in ethyl alcohol medium and placed under ultrasonic bath for breaking agglomeration of nanoparticles under vibration.
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