Structural comparisons between the higher borides and the boranes, carboranes and metallo derivatives suggest that there may be new borane structures. Also, if lower temperature, very high pressure synthetic conditions are tried, we may find three-dimensional boride-like structures containing ot...

This study reports on the preparation and consolidation of nano-sized SmB6 powders via mechanochemical synthesis (MCS) performed at room-temperature using Sm2O3–B2O3–Mg powder blends followed by cold pressing/pressureless sintering. Milling duration was used as an MCS parameter to reveal the o...

Experimental research was carried out to study the temperature dependences of heat capacity Cp(T = 2–300 K), lattice parameters a(Т), and ≿(Т), (5–300 K) of lanthanum and samarium tetraborides. A comparison with data obtained previously for LuB4 reveals the peculiar influence of lanthanide c...

A simple equation does not describe the reaction of samarium sesquioxide and boron, since the products vary with both temperature and length of time at temperature. Metals such as molybdenum and tungsten react with samarium boride phases at elevated temperatures forming delta molybdenum boride a...

SmB62 single crystals were successfully grown by the floating zone (FZ) method. The high-temperature thermoelectric properties were investigated, together with magnetic properties and specific heat at low-temperature. The electrical resistivity, ρ, shows variable-range-hopping (VRH) behavior wi...

Samples with the nominal composition Nd2B5 contain strongly disordered crystals composed of nanosized (100) lamellae. Most commonly, a polysynthetic twinning based on a fourfold rotation separates the lamellae at coherent boundaries. The structure of the twin interface contains a pseudo fourfold...

An addition of ≤0.5 wt% lanthanum boride (LaB6) to powder metallurgy commercially pure Ti (CP-Ti), Ti–6Al–4V and Ti–10V–2Fe–3Al (all in wt%) resulted in improved sintered density, substantial microstructural refinement, and noticeably increased tensile elongation. The addition of LaB6 led ...

Boriding can be candidate method to increase mechanical properties and oxidation resistance of molybdenum based alloys. Rapid oxidation of TZM at elevated temperature and low wear resistance are considered to be main drawbacks for possible applications. In this study molybdenum boride layer was ...

Lanthanum boride (LaBx) thin films with various thicknesses were deposited on ZnO nanowire arrays by electron beam evaporation. Field emission characteristics of ZnO nanowires show close dependence on LaBx coating thickness. The turn-on field increases with increasing LaBx coating thickness from...

The gadolinium phase of the YB50 structure-type compounds was successfully obtained for the first time. In the case of the REB50 compounds, which were recently discovered, the rare-earth atom series smaller than gadolinium (terbium Tb to lutethium Lu) were found to form compounds. This system is...

In this study, the gamma radiation absorption capabilities of some metal borides were studied by using Monte Carlo simulation method. So, the mass attenuation coefficients, μm, the half value layer, HVL, the tenth value layer, TVL and the mean free path, MFP values of the NdB6, SmB6 and GdB6 we...

We obtained the amorphous dysprosium titanate nanopowders by the means of mechanochemical synthesis using a low-temperature modification of titania and dysprosium oxide as raw materials.TEM, SAED, XRD and Raman spectroscopy data show that complete transformation of initial oxides into X-ray amor...

The specific heat, thermal expansion and magnetic properties of polycrystalline sample of nonstoichiometric dysprosium boride DyB50, that was synthesized by boron-thermal reduction of the metal from its oxide in vacuum, were studied at 2–300 K. The measurements revealed a heat capacity and magn...

Metal borides represent a class of materials with a large variety of crystal structures, yet their physical and catalytic properties are overwhelmingly understudied. In this review, we present the structural variations, relationships and properties of metal borides with a metal-to-boron ratio (M...

In the present work, to investigate the effects of rare earth element on the microstructure, hardness, wear and corrosion properties of the surface ceramic layers on the borided Ti6Al4V alloy, the pack boriding experiments were performed by adding CeO2 to the boriding agent. The characteristics ...

The thermal stabilities, electronic structures, magnetic properties and the charge transfers of the rare earth Cerium hexaborides CeB6 under isostatic pressure of 0 GPa and 1 GPa are systematically investigated in detail within the framework of density functional theory method with pseudopotenti...

In this work, laser alloying has been used in order to produce the self-lubricating boride layers on Inconel 600-alloy. The two-step process was used during laser alloying. First, the surface of the substrate material was coated with a paste containing amorphous boron and calcium fluoride CaF2 a...

The gamma ray photon interaction parameters for different samples including calcium silicide, magnesium silicide, magnesium boride, calcium hexaboride, aluminum oxide, and titanium dioxide were investigated. For this aim, the mass attenuation coefficients for these samples were measured by the t...

The dehydration of tetrahydrate potassium pentaborate was investigated in a fluidized bed reactor. The effects of reaction temperature, flow rate of the fluidization gas and particle amount were studied in detail. The optimum dehydration conditions of the studied reactor were determined at three...

This study addresses the influence of Na2B10O16, which may be used for criticality control of fuel debris in the Fukushima Daiichi Nuclear Power Station, on the corrosion behavior of carbon steel in diluted artificial seawater. The corrosion forms of carbon steel were categorized as uniform corr...