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Microstructure and mechanical properties of boron nitride nanosheets-reinforced fused silica composites
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TLDR
In this paper, boron nitride nanosheets (BNNSs) were used for fabrication of fused silica composites to overcome intrinsic brittleness and poor mechanical properties.Abstract:
In order to overcome intrinsic brittleness and poor mechanical properties of fused silica (FS), boron nitride nanosheets (BNNSs) as a novel reinforcement were employed for fabrication of BNNSs/fused silica composites. BNNSs with micron lateral size were homogeneously dispersed with FS powder using a surfactant-free flocculation method and then consolidated by hot pressing. The flexural strength and fracture toughness of the composite with the addition of only 0.5 wt.% BNNSs increased by 53% and 32%, respectively, compared with those of pure FS. However, for higher BNNSs contents the improvement in mechanical properties was limited. Microstructural analyzes have shown that the toughening mechanisms are combinations of the pull-out, crack bridging, and crack deflection mechanisms.read more
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Large-Scale Fabrication of Boron Nitride Nanosheets and Their Utilization in Polymeric Composites with Improved Thermal and Mechanical Properties
Frictional Characteristics of Atomically-Thin Sheets
TL;DR: Using friction force microscopy, the nanoscale frictional characteristics of atomically thin sheets of graphene, molybdenum disulfide, niobium diselenide, and hexagonal boron nitride are compared to those of their bulk counterparts, suggesting that the trend arises from the thinner sheets’ increased susceptibility to out-of-plane elastic deformation.
Journal ArticleDOI
The Effect of Boron Nitride on the Thermal and Mechanical Properties of Poly(3-hydroxybutyrate-co-3-hydroxyvalerate).
TL;DR: The results demonstrate that mechanical properties of the composites were found to increase more for the silanized flake type BN compared tosilanized hexagonal disktype BN (OSBN) and the highest Young's modulus was obtained for the nanocomposite sample containing 1 wt.% OSFBN.
Journal ArticleDOI
Mechanical and dielectric properties of functionalized boron nitride nanosheets/silicon nitride composites
TL;DR: In this article, surface modification assisted flocculation combined with SPS sintering was used to improve the dispersibility of boron nitride nanosheets in the composites, the liquid phase stripped BNNSs are surface functionalized by a two-step covalently modification.
Journal ArticleDOI
Hot-pressing sintered BN-SiO2 composite ceramics with excellent thermal conductivity and dielectric properties for high frequency substrate
TL;DR: In this paper, a series of BN-SiO 2 composite ceramics for high frequency application were successfully synthesized by hot-pressing sintering method and their structures, thermal and dielectric properties were systematically studied.
References
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Journal ArticleDOI
Measurement of the Elastic Properties and Intrinsic Strength of Monolayer Graphene
TL;DR: Graphene is established as the strongest material ever measured, and atomically perfect nanoscale materials can be mechanically tested to deformations well beyond the linear regime.
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Graphene and Graphene Oxide: Synthesis, Properties, and Applications
TL;DR: An overview of the synthesis, properties, and applications of graphene and related materials (primarily, graphite oxide and its colloidal suspensions and materials made from them), from a materials science perspective.
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Enhanced mechanical properties of nanocomposites at low graphene content.
TL;DR: Graphene platelets significantly out-perform carbon nanotube additives in terms of mechanical properties enhancement, and may be related to their high specific surface area, enhanced nanofiller-matrix adhesion/interlocking arising from their wrinkled (rough) surface, as well as the two-dimensional geometry of graphene platelets.
Journal ArticleDOI
Frictional Characteristics of Atomically Thin Sheets
Changgu Lee,Qunyang Li,William B. Kalb,Xin-Zhou Liu,Helmuth Berger,Robert W. Carpick,James Hone +6 more
TL;DR: In this article, the authors compared the nanoscale frictional characteristics of atomically thin sheets of graphene, molybdenum disulfide (MoS2), niobium diselenide, and hexagonal boron nitride exfoliated onto a weakly adherent substrate (silicon oxide) to those of their bulk counterparts.