the sno2 films deposited from inorganic precursors via sol–gel dip coating method have been found to be highly sensitive to methanol and ethanol vapor. three dimensional nano-structure materials have attracted the attention of many researches because the possibility to apply them for near future devices in sensors, catalysis and energy related. the sensitivity and selectivity of sno2 (110) nano...

Vermicular graphite cast iron, which is widely used in the automotive industry because of outstanding strenght properties. But, there are many problem with regard to machinability of this material. In this study, optimum cutting parameters were studied in order to improve machinability of vermicular graphite cast iron. Experiment parameters which is appropriate for ISO 3685 was selected. Depend...

the equilibrium constant of adduct formation between some triorganotin chloride of the type r3sncl (r=c6h5, p-ch3c6h4, n-ch3)ch2)3, c6h5-ch2 and lewis bases cl¯, br¯, and i¯, were measured in 50% v/v ethanol-water solvent spectrophotometrically. the average equilibrium constant values for the systems studied shows the following acceptor trend of tin(iv) in the triorganotin chlorides: p-tolyl > ...

In this communication we present a study of the electronic structure of partially disordered bulk and (100) thin film of quaternary pseudo-Heusler alloy Co2Fe0.4Cr0.6Al in the L21 phase using the Augmented Space recursion (ASR) in a scalar-relativistic tight binding linear muffin-tin orbitals (TB-LMTO) basis. We study the orbital resolved magnetic moment contributions of the constituents of the...

We have studied the electronic and magnetic properties of Fe-Pt, CoPt and Ni-Pt alloy systems in ordered and disordered phases. The influence of various exchange-correlation functionals on values of equilibrium lattice parameters and magnetic moments in ordered Fe-Pt, Co-Pt and Ni-Pt alloys have been studied using linearized muffin-tin orbital method. The electronic structure calculations for t...

In this study, a combination of conventional plasma nitriding and cathodic cage deposition (CCPD) at different temperatures (400 450 °C) is implemented to enhance the surface properties AISI-M2 steel. This effectively improves hardness formation favorable gradient toward core, which would benefit load-bearing capacity substrate. The duplex-treated samples exhibit iron nitrides Fe4N, Fe2−3N tita...

This is a description of the historical, physical and industrial features of the principal centres of mineral productions in the British Dominions beyond the seas, by Mr. R. Stokes, the late Mining Editor of the Rancl Daily Neivs of Johannesburg. It is a brief but comprehensive review of the mineral treasures of the British Empire. It is worthy of notice that the following important minerals ar...