The response of CR-39 nuclear track detector (TasTrak(®)) to protons in the energy range of 0.92-9.28 MeV has been studied. Previous studies of the CR-39 response to protons have been extended by examining the piece-to-piece variability in addition to the effects of etch time and etchant temperature; it is shown that the shape of the CR-39 response curve to protons can vary from piece-to-piece....

CrTa2O6, a rare example of an oxide containing Cr, was prepared by solid state reaction from a mixture of Cr2O3, Ta2O5, and Ta in a sealed silica tube at 1050°C. It exhibits a slightly distorted trirutile structure described in P21/n with a 5 4.738(1), b 5 4.7421(6), c 5 9.2972(9), and b 5 90°55@(1) as determined from Guinier–Hagg data and CuKa1 radiation, in excellent agreement with previous r...

Ag2Cu3Cr2O8(OH)4, a new Ag-Cu-Cr-O layered mixed oxide, prepared by soft hydrothermal heterogeneous reactions, is reported. The new phase is an oxyhydroxide and presents a structure with alternating brucite-like Cu-O and Ag-O layers connected by individual chromate groups. The crystallographic structure has been solved and refined from high resolution powder X-ray diffraction data and is suppor...

Inductively coupled plasma optical emission spectrometry was applied to the determination of trace impurities in tantalum powder. The matrix effects of tantalum in the determination of trace level impurities such as Cr, Fe, Nb, Ni, and Ti were studied by measuring the intensities of each trace element in solution at various concentrations of tantalum. As the concentration of the interfering ele...

Magnesium hydrides are considered as the potential hydrogen storage materials. However, high work temperature, slow reaction kinetics and hard activation process limit the practical application of Mg-based hydrides system. Recently, the reaction ball milling (RBM) technique has been successfully introduced to prepare hydrogen storage materials [1, 2]. It combines the courses of sample preparati...

In the present work, ZrO2-based composites were prepared by adding different amounts of antibacterial magnesium oxide and bioactive biocompatible hydroxyapatite (HAP) to inert zirconia. The synthesized conventional ceramic processing route morpho-structurally analyzed X-ray powder diffraction (XRPD) scanning electron microscopy/energy dispersive spectroscopy (SEM/EDS). Two metallic dental alloy...

The powder of Ocimum tenuiflorum leaves (OtLP) was modified by ZnCl2, H2C2O4, or CuS. powders were characterized and applied as adsorbents for the first time to adsorb Congo red (CR). effects most potent experimental variables on CR adsorption chosen adsorbent examined. Kinetic, isotherm, thermodynamic constants investigated. best discovered be ZnCl2 CuS, which removed 97.82% had a pore size 13...

Contact materials in high-voltage vacuum interrupters require properties such as high conductivity, density and hardness to minimize arc heat damage. In this study, Cu–Cr–Mo alloy contact were examined for their usage materials. Ball milling was performed after analyzing the raw of Cu, Cr Mo powders. A green compact produced using pressure with a mixed powder. Subsequently, composite by sinteri...