The purpose of this study was to compare the castability of Co-Cr-Mo-W (Remanium 2000), Ni-Cr (Durabond) and Co-Cr-Mo (Vera PDI) alloys invested with either conventional (phosphate- and silica-based) or mixed investing techniques. A 10 X 10 mm square-shaped nylon net containing 100 open squares served as a template for construction of wax patterns, which were invested with phosphate-based inves...

Interdiffusion coefficients of the refractory elements in Fe-Cr-X (X 1⁄4 Mo, W) and Fe-Mo-W ternary alloys were measured on the basis of the modified Boltzmann-Matano method for ternary systems. The cross interdiffusion coefficient, ~ D CrW was positive in Fe-Cr-W ternary alloy, indicating that W accelerates interdiffusion between Fe and Cr atoms. On the other hand, the cross interdiffusion coe...

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Spring applications require materials that possess a low Young’s modulus and high strength, in addition to having a lower alloying percentage for reduced costs. In this study, a new low-cost ¢-type titanium alloy with a lower alloying percentage than conventional ¢-type alloys was developed for spring applications using [Al]eq and [Mo]eq. The alloy is located in the near-¢ region and its ¢ tran...

By using first principles calculations, it is found that the noble metal atoms Ag, Au and Cu would like to occupy the vacancy sites of the W(0 0 1) or Mo(0 0 1) surface to form the substitutional surface alloys, despite the fact that they do not like to form alloy in the bulk. The electronic local function (ELF) for these substitutional surface alloys shows that there is no obvious chemical bon...

The reagent 4-hydroxybenzaldehyde thiosemicarbazone (4-HBTS) has been used for the determination of Mo(VI) by spectrophotometric method. The reagent 4-HBTS gives green colour with Mo(VI) solution of weak acidic medium and the maximum absorbance was observed at 365nm, in acidic buffer p H 6.0. The molar absorptivity and Sandell’s sensitivity of Mo(VI)4-HBTS complex are 1.25 x 10 L mol cm and 0.0...

It is shown that the pseudo-elastic response in a series of Ti–Mo–V–Nb–Al alloys with 8–11 wt.% Mo is highly sensitive to both composition and heat treatment. Recovery of up to 3.0% strain has been observed but it appears that this may not be due to reversible formation of a00 martensite. 2003 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

A combination of density functional theory, an empirical model, and Monte Carlo simulations is used to shed light on the evolution of the atomic distribution in the two-dimensional semiconducting transition metal dichalcogenide alloys Mo(1-x)W(x)X2 (X = S, Se, and Te) as a function of the W concentration and temperature. Both random and ordered phases are discovered and the origin of the phase ...