The bulk single crystals of sodium pentaborate [Na(H4B5O10)] were grown by slow evaporation solution growth technique using deionized water as solvent. The grown crystal was confirmed by single crystal X-ray diffraction studies. The structural perfection of the grown crystals has been analyzed b...
Sodium pentaborate pentahydrate (SPP) is a rare mineral. In this study, SPP was synthesized from boric acid and borax through low-temperature crystallization, and its effects on the growth of the alga, Chlorella vulgaris (C. vulgaris) were assessed. The newly synthesized SPP was characterized by...
Single crystals of Potassium pentaborate were grown by the slow evaporation method at room temperature. Single crystal XRD provided evidence that the crystallized material was Potassium pentaborate and the lattice parameter was also ascertained. Solubility of the material was determined gravimet...
Mixed crystal formed with potassium and sodium pentaborates (K0.5Na0.5B5 crystal) is expected to be an interesting material. In order to understand the effect of urea as an impurity on the structural, optical and electrical properties of K0.5Na0.5B5 crystal, pure and urea doped (separately in 3 ...
This paper describes the production of pure and granular boric oxide by calcination of ammonium pentaborate octahydrate [(NH4)2O · 5B2O3 · 8H2O)]in a fluid bed calcinator (FBC). Such calcination is incomplete since agglomeration starts at 623 K, and to avoid agglomeration the boric oxide parti...
The thermal decomposition behaviour of ammonium pentaborate octahydrate (APB) and its conversion to boron oxide were investigated using isothermal thermogravimetry, non-isothermal thermogravimetry and differential thermal analysis.TG and DTA curves of APB were obtained in its own decomposition a...
The effect of sodium chloride, borax and boric acid of different concentrations on the growth rate of ammonium pentaborate octahydrate crystals (APBO) was measured and was found to depend on supersaturation in a fluidized bed crystallizer. The presence of impurities in APBO solution increases th...
Nonlinear optical single crystals of ammonium pentaborate (APB) were grown by the slow cooling method from aqueous solution. Grown crystal was characterized by powder X-ray diffraction (PXRD) and FT-IR spectral analysis. Perfection of the grown crystal was evaluated by high-resolution X-ray diff...
The growth rate of ammonium pentaborate octahydrate has been measured as a function of supersaturation for various particle sizes, at different temperature range of 20–50°C in a laboratory-scale fluidized bed crystallizer. The values of mass transfer coefficient K, reaction rate constant, kr, ...
Ammonium pentaborate (APB) is a well-known nonlinear optical material. To modify and engineer the properties of APB crystals, chalcogenide ZnS nano-particles were added. ZnS nano-particles were synthesised by a co-precipitation method followed by microwave irradiation. Pure and ZnS-added APB cry...
X-ray single crystal (XSC) and neutron powder diffraction data (NPD) were used to elucidate boron site preference for five ternary phases. Ta3Si1−xBx (x=0.112(4)) crystallizes with the Ti3P-type (space group P42/n) with B-atoms sharing the 8g site with Si atoms. Ta5Si3−x (x=0.03(1); Cr5B3- type)...
Multilayered silicide coatings are developed to protect Nb alloys from high temperature oxidation. Their efficiency is improved using a second halide-activated pack-cementation step consisting in a boronizing treatment. This work focuses on the location and quantification of boron in the multi-l...
Using first-principles calculations and evolutionary algorithm, we predict two honeycomb (P1- and C2-type) structures of BSi with two-atom thickness. Phonon spectrum calculations show that both structures are thermodynamically stable. A weak covalent bonding interaction between B atoms along [0 ...
In this work, the preparation, high temperature oxidation and hot corrosion behavior of multilayered composite coatings prepared on NbTiSi based alloy have been reported. By boronizing of the SiY co-deposition silicide coating, part of (Nb,X)Si2 layer was transformed into (Nb,X)B2 by a replaceme...
Tuning the optical response of lithium magnesium borate glass via controlled doping of rare earth ions is the key issue in photonic devices. Glasses with composition 30Li2O–(60−x)B2O3–10MgO-xEr2O3, where 0 ≤ x ≤ 1 are prepared by conventional melt-quenching technique. The X-ray diffraction (...
In this study, solubility measurements regarding boracite [Mg3B7O13Cl(cr)] and aksaite [MgB6O7(OH)6·2H2O(cr)] from the direction of supersaturation were conducted at 22.5 ± 0.5 °C. The equilibrium constant (log10K0) for boracite in terms of the following reaction,Mg3B7O13Clcr+15H2Ol⇌3Mg2++7BO...
Synthesis conditions of magnesium borate compounds in aqueous medium using Na2B4O7 · 10H2O and MgSO4 · 7H2O were determined. The effects of B/Mg mole ratio, pH, reaction time and precipitation temperature on the reaction performed at 90 °C were examined. 0.04Na2O · MgO · 1.23B2O3 · 3.42H2O...
We explored the feasibility of using Dy2O3 doped lithium magnesium borate (LMB) glass based thermoluminescence dosimeter (TLD) for high dose dosimetry in the range 1–100 Gy. Such glass system having composition (in mol%) of (70−z) B2O3–20Li2O–10MgO− zDy2O3 (where 0.05 ≤ z ≤ 0.7 mol%) were p...
Bismuth-borate glass braze (Bi25) with low melting point was utilized to braze magnesium titanate ceramic (MTC) in this work. The interfacial reaction between MTC and bismuth-borate glass braze made a well brazing possible. First, the Zn atoms from the glass seam substituted Mg atoms from MTC fo...
In this paper, thermoluminescence glow curves of gamma irradiated magnesium borate glass doped with dysprosium were studied. The number of interfering peaks and in turn the number of electron trap levels are determined using the Repeated Initial Rise (RIR) method. At different heating rates (β)...
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