Microstructure and improved fracture toughness of borosilicate glass reinforced by 1 vol% Ag nanoparticles

Liu, Lei; Shinozaki, Kenji

doi:10.1016/j.ceramint.2022.07.044

Cited by 5 publications

(3 citation statements)

References 11 publications

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“…At higher content of BNNPs, crack deflection and crack pinning increase, which leads to increasing fracture toughness. The toughening mechanism [34][35][36][37] of BNNP on GC material is shown in Figure 7. In Figure 7a, the fracture deflects when it encounters BNNP, consuming part of the energy to form a shorter fracture.…”

Section: Phases and Microstructures Of Bnns/gw Compositesmentioning

confidence: 99%

Effects of Boron Nitride Nanoplatelets on the Mechanical Properties of Spark Plasma Sintered Glass–Ceramics Composites

Li,

Wang,

Chen

et al. 2023

Adv Eng Mater

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Boron nitride nanoplatelet (BNNP) with superior mechanical properties can be a promising candidate as reinforcement to improve the toughness of glass‐ceramics. In this paper, glass‐ceramics composites reinforced with well‐dispersed BNNPs have been fabricated by spark plasma sintering. The addition of BNNP enhances the mechanical properties of glass‐ceramics and inhibits the nucleation and growth of the diopside. The number of diopsides and the grain size gradually decrease with the increase of BNNP content. The mere addition of 1.0 wt.% BNNPs can simultaneously increase the hardness and fracture toughness by 7.94 % and 22.54 %, respectively. Crack deflection, BNNP pull‐out, crack blocking, and crack bridging are the main toughening mechanisms, and the toughening model was established to optimize the design of BNNP reinforced composites.This article is protected by copyright. All rights reserved.

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Section: Phases and Microstructures Of Bnns/gw Compositesmentioning

confidence: 99%

Effects of Boron Nitride Nanoplatelets on the Mechanical Properties of Spark Plasma Sintered Glass–Ceramics Composites

Li,

Wang,

Chen

et al. 2023

Adv Eng Mater

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“…Antibacterial and mechanical properties of AgNPs incorporation are reported in few glass-ceramics but detailed characterization still needs to be done to make them viable for various applications. 13,34 The objectives of the present work are to study possible routes to fabrication of novel LGC-Ag composites, which may have mechanical properties closer to that of natural tooth enamel while providing enhanced microbial characteristics. Such a material may have promise in terms of improved layering material for dental prostheses.…”

Section: Introductionmentioning

confidence: 99%

“…However, to the best of our knowledge, there is no study reported on antibacterial leucite–Ag glass–ceramic composites with enhanced mechanical properties. Antibacterial and mechanical properties of AgNPs incorporation are reported in few glass–ceramics but detailed characterization still needs to be done to make them viable for various applications 13,34 …”

Section: Introductionmentioning

confidence: 99%

Tailoring antimicrobial characteristic and mechanical behavior with silver in leucite–glass–ceramics for hard tissue engineering

Singh,

Gurjar,

Bhatia

et al. 2023

Int J Applied Ceramic Tech

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Leucite glass–ceramics are excellent dental restorative materials, but they have relatively poor fracture toughness and high hardness, which leads to lower damage tolerance and counter‐tooth wear, respectively. These materials are also susceptible to bacterial infections and biofilm formations. Here, we report a versatile material leucite–silver‐based glass–ceramic to address the aforementioned shortcomings. Silver was incorporated in leucite (K2O·Al2O3·4SiO2) glass–ceramic to improve the fracture toughness, reduce hardness, and impart antibacterial characteristics. Silver (2, 5, 10, and 15 wt.%) was added into the leucite glass matrix by two approaches, that is, using silver nanoflakes (AgNFs) and using precursor (AgNO3), via thermal decomposition, followed by a sintering process. The incorporation of silver was confirmed by X‐ray diffraction, transmission electron microscopy, and energy‐dispersive spectroscopy. Results showed that the hardness of the leucite‐silver composite material was reduced by 30% and indentation toughness improved by 47% as determined by Vickers indentation. Antibacterial characteristics of the material were investigated against Staphylococcus aureus and Escherichia coli bacteria. Scanning electron microscopy was done to see the morphology of damaged bacteria and colonies. Further, antibacterial activity was quantified using the colony formation unit counting method. All the samples showed antibacterial activity and the sample with the highest silver content, that is, 15 wt.% showed maximum potential to damage the bacteria. Inductively coupled plasma‐atomic emission spectroscopy analysis is done in phosphate buffer saline solution to quantify the amount of silver leached out from the leucite‐silver glass–ceramic samples. It was seen that the cumulative leached‐out silver over 3 days was less than 4 μg/cm2 which is well within the daily tolerance limit (5 μg/kg/day) of silver for the human body. Further, to confirm the cell viability, a cytocompatibility test is performed using L929 fibroblast and AW8507 oral cell lines. Cell viability of more than 80% was achieved, suggesting their suitability for biomedical applications. It is believed that the developed material can be a potential candidate for various applications like dental restorations, implants, and coating material for different substrates (SS 304, SS 316, Ti6Al4V, etc.) to protect them from bacterial infections and biofilm formation, etc.

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Bright cyan emission from Eu-Doped borosilicate glasses by optimizing reduction of Eu3+ to Eu2+ in ambient atmosphere

Cui,

Wen,

Chen

et al. 2024

Chemical Engineering Journal

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Microstructure and improved fracture toughness of borosilicate glass reinforced by 1 vol% Ag nanoparticles

Cited by 5 publications

References 11 publications

Effects of Boron Nitride Nanoplatelets on the Mechanical Properties of Spark Plasma Sintered Glass–Ceramics Composites

Effects of Boron Nitride Nanoplatelets on the Mechanical Properties of Spark Plasma Sintered Glass–Ceramics Composites

Tailoring antimicrobial characteristic and mechanical behavior with silver in leucite–glass–ceramics for hard tissue engineering

Bright cyan emission from Eu-Doped borosilicate glasses by optimizing reduction of Eu3+ to Eu2+ in ambient atmosphere

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