Synthesis and studies on microhardness of alkali zinc borate glasses

Subhashini,; Bhattacharya, Soumalya; Shashikala, H.D.; Udayashankar, N.K.

doi:10.1063/1.4872742

Cited by 5 publications

(3 citation statements)

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“…Vickers hardness test or referred to as a micro hardness test method are used to determine the anisotropy nature of the material [27] by using micro hardness testing machines model MITUTOYO MVK-HI, HM-200 Series which is a square base diamond indenter with the apical angle 136° at 1.00N load that was applied on the glass sample. The following equation was used where L is indenter load in kgf, AC is the actual surface area of the impression and d is the average length of diagonal in mm.…”

Section: Sample Characterizationmentioning

confidence: 99%

Physical, Mechanical and Structural Properties of Yttrium Oxide Doped Zinc Borate Glasses

Afrizal

Yahya

Yusoff

et al. 2020

SSP

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In this project, the nominal glass composition with the form of (55-x) H3BO3-45ZnO-xY2O3 (x = 0.0, 0.5, 1.0, 1.5, 2.0 and 2.5 mol%) are synthesized by melt quenching techniques. The effect of Y2O3 on physical, mechanical and structural properties of glasses have been investigated using different characterization techniques. The parameters like density, molar volume and oxygen packing density have been calculated. Based on the micro hardness study, it has showed the decreasing trend from 518.80 N.mm-2 to 453.13 N.mm-2 with an increasing of Y2O3 content from 0.0 mol% to 2.5 mol%. The structural features of the yttrium oxide doped zinc borate glass were studied via X-Ray Diffraction (XRD) to confirm the amorphous nature of glass and Fourier Transforms Infrared Spectroscopy (FTIR) has been done to obtain the band positions and functional groups. FTIR spectral studies were recorded in the 400-4000 cm-1 wavenumber range at room temperature.

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Section: Sample Characterizationmentioning

confidence: 99%

Physical, Mechanical and Structural Properties of Yttrium Oxide Doped Zinc Borate Glasses

Afrizal

Yahya

Yusoff

et al. 2020

SSP

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“…The glass exhibits nonlinear change in its physical properties when one alkali ion is replaced with another alkali content at a constant amount, resulting in a mixed alkali effect (MAE) 21 . Incorporation of zinc oxide in glass structures is expected to acts as a intermediate oxide either as network former or as network modifier 22 , 23 . Glass composition is modified by introducing the ‘dopants’ to the glass network to form the desired glass where it can be bioactive, bioresorbable, and/or biodegradable.…”

Section: Introductionmentioning

confidence: 99%

Structural, optical, and cytotoxicity studies of laser irradiated ZnO doped borate bioactive glasses

Ghazy

Elmowafy

Abdelghany

et al. 2023

Sci Rep

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Borate glasses (BG) doped with different amounts of ZnO (0–0.6 mol%) were formed by the traditional melt quenching technique. The different glasses so made were characterized using different characterization techniques such as X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscope (SEM), and UV–Vis absorption optical properties. The XRD patterns showed an amorphous structure with one broad peak at 2θ = 29°, while the phonons bands were studied in terms of the FTIR bands. Optical properties of the glasses were studied using UV–Vis absorption spectra in the range 190–1100 nm, in which the prominent band lies at about 261.5 nm of peak position, from which the bandgab (Eg) was calculated from its edge using Tauc’s plot, with Eg ~ 3.5 eV. The laser irradiation showed no significant changes in the absorption bands, despite a significant change observed in the amorphous behavior in the XRD pattern. The cell viability was performed for two samples of the BG and 0.6 mol% ZnO doped using 3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl-2H-tetrazolium bromide (MTT) assay method. The result showed better cell viability and low toxicity. So, ZnO doped BG can be used in various biomedical applications.

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“…In the glass structure, ZnO may function as a network modi er, an intermediate oxide, or both. It was revealed that ZnO acts as a network modi er up to a certain concentration, but that when the ZnO content grew, it became an intermediate oxide [39][40][41]. Zinc can eliminate cations from the network of silica, forming a new bond (Si-O-Zn) with signi cantly lower strength than the Si-O-Si link and therefore lowering the glass transition temperature.…”

Section: Introductionmentioning

confidence: 99%

Improving the physical and optical characteristics of Zinc doped borate glass for bone replacement

Salatein,

Abdelghany,

Fahim

et al. 2023

Preprint

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The presented study explores the potential of zinc-doped modified borate glass as a biomaterial for bone bonding applications. The glass samples were prepared using a melt quenching technique with a definite composition of (45-x) B2O3–24.5Na2O–24.5CaO–6P2O5–xZnO, where x = 1, 2, 5, 7.5, and 10 (wt %) and soaked in simulated body fluid (SBF) for extended periods to explore their suitability for bone bonding applications. The samples were analyzed for their structural, optical, and bioactive properties. XRD and FTIR analysis were used to examine the structural properties of the samples before and after immersion in SBF. The XRD analysis revealed that increasing the Zn content and immersion time led to the formation of a hydroxyapatite (HA) layer inside the glassy matrix, indicating improved bioactivity. The FTIR analysis showed that the addition of ZnO allowed for the conversion of tetrahedral borate units to corresponding triangular units, which improved bioactivity. Electronic spectrum measurements (UV/Vis) were used to assess the samples' optical characteristics, showing that increasing Zn content decreases the optical energy gap, indicating improved optical properties. In conclusion, this study highlights the potential of zinc-doped borate glass as a promising biomaterial for bone replacement applications. The findings indicate that by varying the Zn content, it is possible to improve the physical and optical characteristics of the glass, making it a more viable option for bone replacement. Further research is needed to optimize the composition and properties of zinc-doped borate glass and to assess its long-term performance in vivo.

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Synthesis and studies on microhardness of alkali zinc borate glasses

Cited by 5 publications

References 0 publications

Physical, Mechanical and Structural Properties of Yttrium Oxide Doped Zinc Borate Glasses

Physical, Mechanical and Structural Properties of Yttrium Oxide Doped Zinc Borate Glasses

Structural, optical, and cytotoxicity studies of laser irradiated ZnO doped borate bioactive glasses

Improving the physical and optical characteristics of Zinc doped borate glass for bone replacement

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