Earth abundant materials such as molybdenum carbide are gaining importance over expensive, precious metals such as ruthenium and platinum as catalysts for heterogeneous and electrochemical reaction systems. Despite its attributes, molybdenum carbide has not been developed as a commercial catalys...

A method for synthesis of carbide containing composites by mechanical activation has been developed. A mixture of molybdenum oxide, carbon black and Al or Zn metal reductant have been treated for 15 min in air followed by a subsequent calcination in argon atmosphere at 800 °C. The elemental and...

This work is concentrated on getting a reply to the following question: how does the grain size of boron carbide specimens influence on their mechanical and electrical response? It is a common issue that both essential properties are usually affected by the grain boundaries. To this purpose, a s...

A series of boron-rich boron carbides are investigated to explore the effect of boron/carbon ratios on the microstructure and mechanical properties of the complex material. It has been found that excess boron substitution gives rise to expanded lattice constants, orientational asymmetry of the c...

Simultaneous synthesis and densification of boron carbide and boron carbide- graphene nano platelets (GNP) were carried out by reactive spark plasma sintering of amorphous boron and graphene nano platelets at temperature ranging from 1200 to 1600 °C, pressure of 50 MPa and heating rate of 50 °...

In production world, the alloys are more preferred than monolithic material. The various alloys ca, mg, cr, si and aluminium are applicable in all type of industries. The aluminium 6082 alloy is more preferred than other alloys due to less weight, high strength to weight ratio and less cost. In ...

This paper presents an in situ Transmission Electron Microscopy (TEM) study of the damage formation process in ion-irradiated boron carbide used as neutron absorber for fast nuclear reactors. We focused our experiment on the damage induced by 1 MeV gold ions irradiation performed on the JANNuS-O...

Fracture toughness is one of the most important mechanical properties of structural materials. Particularly, enhancing the fracture toughness of super-hard materials is essential for their applications. Here, we applied density functional theory to examine how the microalloying and nanotwinning ...

Tensile specimens with three different gage dimensions were used to determine the tensile strength of a hot-pressed boron carbide. The strength-limiting flaw population and information on the fracture behavior under an applied tensile stress were also determined. The material follows traditional...

Boron carbide submicron powder was synthesized with boron oxide and graphene as starting materials by gas-solid reaction method using two different apparatuses. The effects of calcination temperature and holding time, apparatus type and B2O3/C ratio of the starting materials on the phase composi...

Ball milling is commonly used refining process to improve sintering properties of boron carbide. However, this process often leads to the introduction of trace metal impurities into raw materials. It was found in this study that, with prolonged holding time and increased sintering temperature at...

The results of a study of the chemical composition, vacuum and thermal properties of boron carbide ceramics, which is planned to be used in ITER diagnostic ports, are presented. The measured boron carbide content in sintered and hot pressed ceramics is 99,0÷99,7%, they do not contain unauthoriz...

The paper presents some experimental results regarding the electrodeposition of PbSe thin films at 70 °C from two choline chloride (ChCl) based ionic liquids containing PbCl2 and SeO2 as precursors in choline chloride-ethylene glycol (ILEG) and choline chloride-urea (IL) eutectic mixtures. In t...

Mercury telluride (HgTe) nanorods and nanoparticles were synthesized at room temperature via sonochemical method. The crystalline HgTe nanorods were formed from mercury perchlorate hydrate and tellurium powder in an ethylenediamine solvent system mixed with a complexing agent of 1-thioglycerol. ...

Unidirectionally coherent and boundary-free nanotwinned (nt) mercury cadmium telluride (HgCdTe or MCT) was achieved under plastic deformation of nanoindentation. The hardness of nt-MCT is up to 47.2 GPa, which is two orders magnitude higher than that of monocrystalline MCT. This increased hardne...

We consider II–VI narrow gap semiconducting alloys: mercury cadmium telluride, Hg(1−x)Cd(x)Te (MCT), mercury zinc telluride, Hg(1−x)Zn(x)Te (MZT), and mercury zinc selenide, Hg(1−x)Zn(x)Se (MZS). MCT is emphasized for actual calculations, but a table of values needed in all calculations is pres...

A new chemosensor based on tellurium-rhodamine B (TRB) for the fast and selective detection of Hg2+ in aqueous medium was designed and synthetized in only two steps from a symmetrical organic telluride and rhodamine B. The structure of TRB was determined by RMN, HRMS and IR and its photophysical...

Novel β-hydroxy-,β-amino- and β-mercapto- dialkyl- and phenyl-alkyl tellurides have been achieved through regioselective ring opening reactions of oxiranes, aziridines and thiiranes with different Te-nucleophiles, including tellurosilanes. Tellurium-125 NMR chemical shifts of selected compoun...

New reaction systems leading to cadmium, mercury and lead selenides and tellurides are reported. The chalcogenides were prepared by a simple, direct reaction between chalcogen, metal oxide or carbonate, and 3-(diphenylphosphino)propionic acid. The synthesis of 3-(diphenyltellurophosphoryl)propio...

HgTe nanoparticles have been synthesized through a simple hydrothermal reduction approach using [N-N′-bis(salicylaldehydo)ethylenediamine]mercury(II), [Hg(salen)] complex, as a new precursor. HgTe nanoparticles with size about 15–25 nm was prepared. The products were also characterized by scan...