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2741
Effects of H2SO4, GA3, and cold stratification on the water content, coat composition, and dormancy release of Tilia miqueliana seeds
Published 2023-11-01“…During the cold stratification period, the cellular structure was damaged and an increasing number of holes appeared on the inner and outer surfaces of the seed coat. Vickers hardness tests showed that GA3 decreased the seed coat hardness. …”
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Article -
2742
Assessing the influence of cyclic bending on pearlitic wire's microstructural evolution: a simulation of spiraling and armoring processing effects
Published 2023-09-01“…Specimens were submitted to the Vickers microhardness and tensile tests to evaluate the mechanical properties. …”
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Article -
2743
Comparative Evaluation of TiO<sub>2</sub> Nanoparticle Addition and Postcuring Time on the Flexural Properties and Hardness of Additively Fabricated Denture Base Resins
Published 2023-11-01“…All the specimens were subjected to artificial aging (5000 cycles), followed by testing of the flexural strength and elastic modulus using a universal testing machine, and the hardness using the Vickers hardness test. A three-way ANOVA was used for the data analysis, and a post hoc Tukey’s test was used for the pairwise comparisons (α = 0.05). …”
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Article -
2744
An SPS-RS Technique for the Fabrication of SrMoO<sub>4</sub> Powellite Mineral-like Ceramics for <sup>90</sup>Sr Immobilization
Published 2023-08-01“…The temperature conditions for SrMoO<sub>4</sub> formation under SPS were determined, yielding ceramics with a relative density of 84.0–96.3%, Vickers microhardness of 157–295 HV, and compressive strength of 54–331 MPa. …”
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Article -
2745
Influence of Varying Concentrations of Epoxy, Rice Husk, Al<sub>2</sub>O<sub>3</sub>, and Fe<sub>2</sub>O<sub>3</sub> on the Properties of Brake Friction Materials Prepared Using H...
Published 2023-06-01“…On the other hand, the density, hardness, flexural strength, flexural modulus, and wear rate values of this specimen were 1.23 g/cm<sup>3</sup>, 81.2 Vickers (HV), 57.24 MPa, 4.08 GPa, and 8.665 × 10<sup>−7</sup> mm<sup>2</sup>/kg. …”
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Article -
2746
Effect of Cu Content on the Precipitation Behaviors, Mechanical and Corrosion Properties of As-Cast Ti-Cu Alloys
Published 2022-02-01“…The tensile strength, Vickers hardness and Young’s modulus of the Ti-Cu alloys increase with the increase of Cu content, whereas the elongation decreases. …”
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Article -
2747
Surface Properties of Polymer Resins Fabricated with Subtractive and Additive Manufacturing Techniques
Published 2021-11-01“…Three indentations for Vickers micro-hardness (VHN) were performed on each disk and an average was identified for each specimen. …”
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Article -
2748
Hybrid Sol–Gel and Spark Plasma Sintering to Produce Perovskite-like SrTiO<sub>3</sub> Ceramics for Radioactive Waste Isolation
Published 2023-10-01“…Physicochemical characteristic studies included density measurement results (3.11–4.80 g·cm<sup>−3</sup>), dilatometric dependencies, Vickers microhardness (20–900 HV), and hydrolytic stability (10<sup>−6</sup>–10<sup>−7</sup> g·cm<sup>−2</sup>·day<sup>−2</sup>), exceeding GOST R 50926-96 and ISO 6961:1982 requirements for solid-state matrices. …”
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Article -
2749
A novel approach for rice straw agricultural waste utilization: Synthesis of solid aluminosilicate matrices for cesium immobilization
Published 2022-09-01“…Glass ceramics RS-(K,Cs)AlSi3O8 obtained by the SPS method at 1000 °C for 5 min was characterized by a high density of ∼2.62 g/cm3, Vickers hardness ∼ 2.1 GPa, compressive strength ∼231.3 MPa and the rate of cesium ions leaching of ∼1.37 × 10−7 g cm−2·day−1. …”
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Article -
2750
Effect of Si content on the microstructure and mechanical properties of 9Cr-ferritic/martensitic steels
Published 2023-06-01“…Their microstructure and mechanical properties were characterized using OM, SEM, TEM, Vickers hardness tester and tensile tester. The steel has a typical ferrite/martensitic structure, with M23C6 and MX phases precipitated at the martensite lath boundary or in the lath. …”
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Article -
2751
Effect of Various Concentrations of Sodium Hypochlorite on the Microhardness of Bulkfill Restorative Composite Resin used as a Pre-endodontic Restoration
Published 2022-10-01“…The bulkfill composite resin discs were randomly divided into four main groups, group 1 (distilled water), group 2 (1% NaOCl), group 3 (3% NaOCl), and group 4 (5% NaOCl), with eight samples in each group. Baseline Vickers hardness testing was performed for each group using a 100 gram load and a dwell time of 10 seconds before being immersed in the irrigation solution. …”
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Article -
2752
Development, In-Vitro Characterization and In-Vivo Osteoinductive Efficacy of a Novel Biomimetically-Precipitated Nanocrystalline Calcium Phosphate With Internally-Incorporated Bon...
Published 2022-07-01“…In-vitro characterization data showed that the BpNcCaP + BMP-2 granules were comprised of hexagonal hydroxyapatite with an average crystallite size ranging from 19.7 to 25.1 nm and a grain size at 84.13 ± 28.46 nm. The vickers hardness of BpNcCaP was 32.50 ± 3.58 HV 0.025. …”
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Article -
2753
Gibbs Adsorption and Zener Pinning Enable Mechanically Robust High‐Performance Bi2Te3‐Based Thermoelectric Devices
Published 2023-09-01“…These effects result in much‐refined grain size and twofold enhancement of the compressive strength and Vickers hardness in (Bi0.5Sb1.5Te3)0.97(MgB2)0.03 compared with that of traditional powder‐metallurgy‐derived Bi0.5Sb1.5Te3. …”
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Article -
2754
Optimization on hardening process parameters of alumnium alloy 7075 based composites using gra approach
Published 2023-01-01“…The microhardness and wear resistance of these composites were assessed using a Vickers hardness tester and a Pin-on-Disc testing apparatus. …”
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Article -
2755
Biodegradable magnesium pins enhanced the healing of transverse patellar fracture in rabbits
Published 2021-11-01“…Microindentation showed that, compared to the Control group, Mg group showed 49.9% higher Vickers hardness and 31% higher elastic modulus at week 8 and 12, respectively. …”
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Article -
2756
A comprehensive and comparative study of microstructure and mechanical properties for post-process heat treatment of AlSi7Mg alloy components fabricated in different laser powder b...
Published 2023-05-01“…While the yield stress (YS), elongation (%), and Vickers microindentation hardness (HV) were somewhat different for the as-built components, the general trends for the different heat treatments were essentially the same. …”
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Article -
2757
Effects of Bio-Aging on Mechanical Properties and Microbial Behavior of Different Resin Composites
Published 2023-07-01“…However, a decrease in flexural strength in all groups was observed (<i>p</i> < 0.05), except for the nanoflow composite group (<i>p</i> > 0.05). The Vickers hardness remained stable in all groups after aging (<i>p</i> > 0.05), except for the nano-filled group (<i>p</i> < 0.05). …”
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Article -
2758
Characterization of the untreated, stress relieve and t6 heat treated aluminium alloy alsi10mg formed by selective laser melting (slm) technique
Published 2014“…In addition to that, micro-hardness of the samples is tested using Vicker’s hardness test. The result shows similar pattern at which the SLM fabricated samples have much higher hardness value as compared to casted samples, though the stress relieve and T6 heat treatment do not produce significant effect on the micro-hardness value of the samples. …”
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Final Year Project (FYP) -
2759
Improving the safety and reliability of reactor pressure vessel steels
Published 2019“…</p> <p>To study the effect that composition has on RPV steel response to thermal ageing, 19 alloys with systematic variations in the levels of Cu, Ni, Mn, Si, and P levels were thermally-aged at 330°C,365°C, and 405°C for over 30,000 hours. Results from Vickers hardness tests revealed that an alloy containing 0.3 at.% Cu displayed a significant increase in hardness; atom probe tomography(APT) experiments revealed Cu-rich precipitate formation in the matrix and at heterogeneous nucleation sites. …”
Thesis -
2760
Characterisation and mechanical properties of bulk nanostrictured Al-based composites for high temperature applications
Published 2014“…</p> <p>Mechanical properties at room temperature were tested by Vickers microhardness, quasi-static tensile tests, dynamic tensile tests and dynamic compression tests. …”
Thesis