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2341
Effect of Ultrasonic Surface Rolling on the Fretting Wear Property of 7075 Aluminum Alloy
Published 2023-09-01“…A white light interferometer, Vickers hardness tester, and X-ray diffractometer were employed to comparatively analyze the variations in surface roughness, hardness. and grain size before and after the USR treatment. …”
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2342
Near‐Net Shape Hot Isostatic Pressing: Microstructural Analysis and Hardness Evolution at a Steel–Nickel Alloy Interface
Published 2022-04-01“…There is no obvious carbon diffusion around the interface due to a low carbon concentration in the capsule. The Vickers microhardness profile shows an increase, then a decrease, and eventually becomes stable at 425HV. …”
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2343
Effect of Minor Er Additions on the Microstructures and Mechanical Properties of Cast Al-Cu-Mg-Ag Alloys
Published 2021-07-01“…The microstructures and mechanical properties of novel cast Al-Cu-Mg-Ag alloys with and without minor additions of Er (0.09 and 0.2 wt %) are investigated by Vickers hardness tests, tensile tests, optical metallographic examination, scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray diffraction (XRD). …”
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2344
Influence of Y<sub>2</sub>O<sub>3</sub> Content on Microstructure and Properties of Laser Alloying WC/Ni Metal Ceramic on 38CrMoAl Steel
Published 2017-03-01“…The influence of Y<sub>2</sub>O<sub>3</sub> content on the phase composition, microstructure, microhardness and tribological performance of the alloying layers were investigated via X-ray diffraction, scanning electron microscopy, electron microprobe, Vickers hardness tester and friction wear testing machine. …”
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2345
Synthesis of (HfZrTiNbTa)N powders via nitride thermal reduction with soft mechano-chemical assistance
Published 2023-03-01“…In addition, the high-entropy bulk nitride ceramics with relative density (Rw) of 94.31%±0.76%, Vickers hardness of 21.00±0.94 GPa, and fracture toughness (KIC) of 3.18±0.16 MPa·m1/2 are obtained with submicron-sized powders, which are superior to those obtained with micron-sized powders.…”
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2346
Zirconia Toughened Alumina Ceramics via Forming Intragranular Structure
Published 2024-03-01“…The phase composition of the powder prepared by the co-precipitation method after calcination at 1100 °C is θ-Al<sub>2</sub>O<sub>3</sub> and t-ZrO<sub>2</sub>, and the average grain size after sintering at 1500 °C is 1.04 ± 0.28 µm, and the maximum Vickers hardness and fracture toughness of the specimens reach 19.37 ± 0.43 GPa and 6.18 ± 0.06 MPa·m<sup>1/2</sup>, respectively. …”
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2347
Influence of Ni Contents on Microstructure and Mechanical Performance of AlSi10Mg Alloy by Selective Laser Melting
Published 2023-06-01“…The tensile strength, elongation, Vickers hardness, friction coefficient, and wear volumes of the 3Ni-AlSi10Mg samples were 401.15 ± 7.97 MPa, 6.23 ± 0.252%, 144.06 ± 0.81 HV, 0.608, 0.11 mm<sup>3</sup>, respectively, which outperformed the pure AlSi10Mg samples (372.05 ± 1.64 MPa, 5.84 ± 0.269%, 123.22 ± 1.18 HV, 0.66, and 0.135 mm<sup>3</sup>).…”
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2348
Hot forging Nb4AlC3 ceramics with enhanced properties
Published 2023-11-01“…The ordered layered grains increased the resistance of crack propagation, resulting in a higher fracture toughness parallel to the c-axis direction (9.41 MPa·m1/2), which was higher than that of untextured ceramics (6.88 MPa·m1/2). The Vickers hardness tested at 10 N on the texture top surface (7.18 GPa) was higher than that on the texture side surface (6.45 GPa).…”
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2349
The mechanical and physical properties of microcrystalline cellulose (MCC)/sisal/PMMA hybrid composites for dental applications
Published 2023-01-01“…Scanning electron microscopy (SEM), universal testing machine (UTM), hardness Vickers, thermogravimetry analysis (TGA), and ANSYS Workbench 2022 R1 software are utilized to characterize the properties of the composites. …”
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2350
The Effects of Indium Additions on Tribological Behavior of Spark Plasma Sintering-Produced Graphene-Doped Alumina Matrix Composites for Self-Lubricating Applications
Published 2024-01-01“…Hardness was determined using the Vickers technique and tribological properties were studied by the ball-on-disk method. …”
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2351
Assessing the Impact and Suitability of Dense Carbon Dioxide as a Green Solvent for the Treatment of PMMA of Historical Value
Published 2023-01-01“…The impact of CO<sub>2</sub> on the weight, the appearance of the samples (dimensions, color, gloss, and surface texture), and modifications to their physicochemical and mechanical properties were monitored via a multi-analytical approach that included optical microscopy, Raman and attenuated total reflection Fourier transform infrared (ATR-FTIR) spectroscopies, and micro-indentation (Vickers hardness). Results showed that CO<sub>2</sub> induced undesirable and irreversible changes in PMMA samples (i.e., formation of fractures and stress-induced cracking, drastic decrease in the surface hardness of the samples), independent of the conditions used (i.e., temperature, pressure, CO<sub>2</sub> phase, and exposure time).…”
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2352
Incorporating Aminated Nanodiamonds to Improve the Mechanical Properties of 3D-Printed Resin-Based Biomedical Appliances
Published 2020-04-01“…Both nanocomposites showed markedly improved mechanical properties, with the A-ND-containing nanocomposite showing a statistically significant increase in the flexural strength (<i>p</i> < 0.001), elastic modulus (<i>p</i> < 0.01), and impact strength (<i>p</i> < 0.001) compared to the control and ND-containing groups. The Vickers hardness and wear-resistance values of the A-ND-incorporated material were significantly higher (<i>p</i> < 0.001) than those of the control and were comparable to the values observed for the ND-containing group. …”
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2353
Effects of Incorporation of Marine Derived Hydroxyapatite on the Microhardness, Surface Roughness, and Fluoride Release of Two Glass-Ionomer Cements
Published 2021-11-01“…The SR was measured using a contact type profilometer and the microhardness was determined using a Vickers micro-hardness tester at a load of 980 g for 15 s. …”
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2354
Evaluation of the Properties of 3D-Printed Ti Alloy Plates: <i>In Vivo</i> and <i>In Vitro</i> Comparative Experimental Study
Published 2023-01-01“…The surface morphology, mechanical properties, and bone–plate contact rate of the 3D-Ti plates and the Synthes-Ti plates were characterized and compared via electron microscopy, atomic force microscopy, Vickers hardness test, three-point bending test, and software calculation. …”
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2355
Microstructure and Mechanical Properties of AA7075 Aluminum Alloy Fabricated by Spark Plasma Sintering (SPS)
Published 2021-01-01“…The samples prepared using the ball-milled powder exhibit both higher Vickers microhardness and transverse fracture strength values than those prepared using the raw powder, reflecting the finer microstructure.…”
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2356
Promotion Effect of Carboxymethyl Chitosan on Dental Caries via Intrafibrillar Mineralization of Collagen and Dentin Remineralization
Published 2022-07-01“…The process and pattern of mineralization were investigated by transmission electron microscopy (TEM), scanning electron microscopy (SEM), and energy-dispersive X-ray spectroscopy (EDS) as well as structured illumination microscopy (SIM). The Vickers hardness test was used to quantify the dentin hardness, while the microtensile bond strength (µTBS) test was used to assess the bond strength and durability. …”
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2357
Effects of Non-Metallic Inclusions and Mean Stress on Axial and Torsion Very High Cycle Fatigue of SWOSC-V Spring Steel
Published 2022-06-01“…The influence of inclusion size and Vickers hardness on cyclic strength is well predicted with Murakami and Endo’s <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msqrt><mrow><mi>a</mi><mi>r</mi><mi>e</mi><mi>a</mi></mrow></msqrt></mrow></semantics></math></inline-formula> parameter model. …”
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2358
Fine-tuning of mechanical properties in a Zn–Ag–Mg alloy via cold plastic deformation process and post-deformation annealing
Published 2021-10-01“…By controlling the microstructure, the most promising results were obtained in the sample subjected to 50% CR reduction and 5-min annealing, which were: ultimate tensile strength of 432 MPa, yield strength of 385 MPa, total elongation to failure of 34%, and Vickers microhardness of 125 HV0.3. The obtained properties clearly exceed the mechanical benchmarks for biodegradable implant materials. …”
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2359
Effect of the Degree of Conversion on Mechanical Properties and Monomer Elution from Self-, Dual- and Light-Cured Core Composites
Published 2021-09-01“…DC was determined using FTIR, compressive and flexural strength and modulus of elasticity using a universal testing machine and microhardness using Vickers hardness. Elution was measured using HPLC. …”
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2360
Novel TiC-based ceramic with enhanced mechanical properties by reaction hot-pressing at low temperature
Published 2023-05-01“…TiC-36 mol% Si-10 mol% ZrC (raw composition) exhibits good comprehensive mechanical properties (Vickers hardness of 21.8 GPa, flexural strength of 580 MPa, and indentation fracture toughness of 6.7 MPa m1/2), which reach or exceed most TiC-based ceramics in previous reports.…”
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