The deposition of a thin film tool coating as wear resistant layer on tungsten carbide (WC) cutting tool material marks the industrial standard for machining of various workpiece materials. Recent developments on alternative cutting materials show the potential of niobium carbide (NbC) for machi...

NbC crystalline films have been deposited in vacuum by ultra-short pulsed laser deposition technique. The films have been characterized by transmission and scanning electron microscopies and by X-ray diffraction. To clarify the ablation–deposition mechanism, the plasma produced by the ablation ...

The phase stability and microstructural formations for a series of hot isostatically pressed (HIP) NbCx compositions was investigated. Based on the composition, single-phase B1 (Fm3¯m) NbC or (P3¯1m) β−Nb2C equiaxed grains were observed as well as β-Nb2C lath precipitation within NbC. Partic...

The structure of niobium carbide particles in as-cast heat resistant modified HP40NbTi alloy have been studied by light and electron microscopy, electron microprobe and X-ray diffraction. The niobium carbide particles in the structure of the HP40NbTi alloys are a multiphase polycrystal clusters ...

Apart by vacancies, the different pseudo-cubic phases NbC, Nb4C3 and Nb6C5, can accommodate any stoichiometry of NbCx (0.75 ≤ x ≤ 1.0) in the binary phase diagram and enable a large process window. Properties, like micro-hardness, hot hardness, sliding wear resistance, elastic modulus and toug...

Niobium carbides and nitrides have been proposed as potential candidates for hardness and related applications, however, comprehensive studies are still needed for better understanding that may pave way for their re-engineering for the ultra hard industry. Here we present ab initio Density Funct...

Niobium carbide (NbC) exhibits important properties which make it an alternative for cutting tool material. Nowadays, the cutting tool market is dominated by the tungsten carbide, which is used in cemented carbide grades of tool materials. However, the research of a novel substrate material for ...

Basics about physical, mechanical and tribological properties of straight NbCs, including paths to tailor these properties, were layed down in Metal Powder Report, Vol. 71(4), 2016 and Vol. 71(5), 2016. The object is now to give an up-date on the progress in the key properties, like HV30, KIC an...

The objective of our research was to add the strengthening phase carbide to the matrix Ti–Mo–Co powder alloy for enhancing its mechanical properties. Various amounts of strengthening niobium carbide powders were decomposed with titanium matrix then niobium dissolved with titanium as substituti...

A functional composite with unique photoluminescence property, excellent mechanical property and fine thermal stabilities were prepared through reactive blending of the hydrogenated carboxylated nitrile rubber (HXNBR) and modified zinc carbonate basic (m-3Zn(OH)2·2ZnCO3). The m-3Zn(OH)2·2ZnCO3...

Zinc oxide and its precursor i.e., zinc carbonate is widely utilized in various fields of industry, especially in solar energy conversion, optical, and inorganic pigments. In this work, a facile and clean electrodeposition method was utilized for the synthesis of zinc carbonate nanoparticles. Al...

Dynamic kinetic analyses were performed on basic zinc carbonate using TG and DTA measurements in N2. The thermal behavior and the kinetics of decomposition were studied. The effect of procedural variables on the kinetics was investigated. In this work, the procedural variables included heating r...

Two different precursors of zinc oxide were prepared via the ammoniacal ammonium carbonate leaching of the black mass obtained during the recycling of alkaline batteries. For a concentration of 0.1 mol/L of ammonium in the leaching solution, zinc basic carbonate, was obtained, while for higher a...

ZnO nanoparticles were synthesized solvothermally in various diols (ethylene glycol, di(ethylene glycol), tetra(ethylene glycol), 1,2-propanediol, 1,4-butanediol), using basic zinc carbonate (2ZnCO3·3Zn(OH)2) as a precursor for the first time. Since ZnCO3 was sparingly soluble in diols the tran...

Cocatalyst modification is a promising approach for the improved degradation performance of photocatalytic materials owing to rapid charge transfer and interfacial catalytic process. In this work, basic zinc carbonate as a novel cocatalyst was successfully loaded on the surface of Ag-AgCl by a s...

Nickel-modified titanate/TiO2 catalysts were prepared by deposition of nickel ions onto hydrothermally prepared titanate supports, followed by hydrogen temperature-programmed reduction. Two different nickel precursors (hydroxide and carbonate) were used to tune reducibility and to vary the cryst...

A nickel(II) hydroxo complex (3) supported by a cyclohexyl based POCsp3OP pincer ligand (POCsp3OP = cis-1,3-Bis-(di-tert-butylphosphinito)cyclohexyl) is reported. Complex 3 reacts with CO to form the corresponding hydroxycarbonyl complex, (POCsp3OP)NiCOOH (4). Complex 3 is also reactive towards ...

Here, we demonstrate a facile and substrate-free synthesis of sunflower-like nickel–copper carbonate hydroxide (NC) as electrode material for supercapacitor application, employing a polypyrrolidone assisted hydrothermal protocol. The temperature of the hydrothermal reaction is optimized to achi...

TiO2 photoanodes have aroused intensive research interest in photoelectrochemical (PEC) water splitting. However, they still suffer from poor electron-hole separation and sluggish oxygen evolution dynamics, leading to the low photoconversion efficiency and limiting commercial application. Here, ...

Supercapacitors with superior performance and long cycling ability are attractive for the next-generation energy storage devices. Herein, an unique hybrid of nickel hydroxide carbonate nanobelts densely and strongly anchored on reduced graphene oxide nanosheets (HC/RGO) has been designed and syn...