The morphological and microstructural changes during mechanical milling of Al powder mixed with 2.5, 5 and 10 wt.% Al2O3 particles were studied. The milling was performed in a planetary ball mill for various times up to 20 h. The produced composite powders were investigated using X-ray diffraction pattern (XRD) to elucidate the role of particle size, secondary phase content and milling time on ...

In this study, molybdenum-copper/alumina nano composite was synthesized with mechano-chemical method using high energy planetary ball milling. The molybdenum oxide, copper oxide and aluminum powder were used as starting materials and reaction appeared to occur through a rapid combustion reaction process. The evaluation of powder particles after different milling times was studied by X-ray diffr...

Although Cu and Fe are immiscible under equilibrium conditions, they can form supersaturated solid solutions by mechanical alloying. In this paper, nano-structured of the metastable Cu-Fe phase containing 10, 15, 20 and 25% wt Fe were synthesized by intensive ball milling for 15h, in order to achieve a solid solution of Fe in Cu. The phase composition, dissolution of the Fe atoms into the Cu ma...

Nanostructured Cu-20Fe alloy was synthesized by mechanical alloying process and the effects of process control agents (PCA) on the phase formation, crystallite refinement and morphology of powder particles were studied. The dissolution of Fe into Cu matrix and the morphology of powder particles were analyzed by X-ray diffraction (XRD) technique and scanning electron microscopy (SEM), respective...

Inthiswork, Titanium dioxide (TiO2) nanostructures have beensynthesized via amicrowave assisted solvothermalmethod using titanium tetraisopropoxide (TTIP),polyvinylpyrrolidone(PVP) and Ascorbic Acid (AA) in ethanol. The mole ratio ofPVP/AA was found to be critical in determining the morphology and crystal phaseof the final product. PVP/AA mole ratio varied from 1 up to 1...

Timothy Williamson’s Knowledge and its Limits is a treasure trove of philosophical riches. By reversing the usual explanatory order and putting “knowledge first” in epistemology (p. v) Williamson reconceives the relationships between knowledge, belief, justification and evidence. While there is much to be said about Williamson’s ambitious project, I will focus on his imaginative account of evid...

Timothy Williamson’s Knowledge and its Limits is a treasure trove of philosophical riches. By reversing the usual explanatory order and putting “knowledge first” in epistemology (p. v) Williamson reconceives the relationships between knowledge, belief, justification and evidence. While there is much to be said about Williamson’s ambitious project, I will focus on his imaginative account of evid...

s: Aoyama N, Théberge J, Williamson KE, Drost DJ, Manchanda R, Malla AK, NorthcottS, Menon RS, Neufeld RWJ, Rajakumar N, Densmore M, Schaefer B, Williamson PC.“Longitudinal Study of Schizophrenia: Gray Matter Loss and Glutamtaregic Activity inthe Limbic Basal Ganglia Thalamo-Cortial Circuit (BGTC)”. Department PsychiatryAnnual Research Day, University of Western Ontario, London,...