Showing 81 - 100 results of 154 for search '"Vickers"', query time: 0.05s Refine Results
  1. 81

    Effect of antacid gastric syrups on surface properties of dental restorative materials: an in vitro analysis of roughness and microhardness by Fikri Öcal, Burak Dayi

    Published 2025-01-01
    “…Surface roughness was measured at the beginning, on the 7th, 15th and 28th days using a mechanical profilometer, AFM, and SEM and microhardness was measured using a Vickers device. Shapiro-Wilk, Repeated Measures ANOVA, One-Way ANOVA, Tukey and Games-Howell tests were applied for statistical analysis. …”
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  2. 82

    Study on Thixojoining Process Using Partial Remelting Method by M. N. Mohammed, M. Z. Omar, M. S. Salleh, K. S. Alhawari

    Published 2013-01-01
    “…After thixojoining, microstructural examination including metallographic analysis, energy dispersive spectroscopy (EDS), and Vickers hardness tests was performed. From the results, metallographic analyses along the joint interface between semisolid AISI D2 and stainless steel showed a smooth transition from one to another and neither oxides nor microcracking was observed. …”
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  3. 83

    Characterization of TiZrN and TaZrN Nanocomposite Multilayer Coating Deposited via RF/DC Magnetron Sputtering on AISI4140 Steel by R. Hariharan, R. Raja, R. J. Golden Renjith Nimal, Mohamad Reda A. Refaai, S Ravi, Haiter Lenin Allasi

    Published 2021-01-01
    “…It is mechanically characterized by corrosion and Vickers hardness. In AFM measurements, coarse cluster particles with increasing Ti and Ta values not only increase the average roughness (Ra) by 2.341 nm (200°C) and 2.951 nm (400°C) but also have a continuous average thickness which was shown to increase by 1.504 nm and 781.75 nm. …”
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  4. 84

    Densification of hydroxyapatite/zirconia nanocomposites fabricated via low-temperature mineralization sintering process and their mechanical properties by Yeongjun Seo, Shiori Nawa, Tomoyo Goto, Sunghun Cho, Tohru Sekino

    Published 2025-01-01
    “…Additionally, it exhibited the highest values of mechanical properties such as the Vickers hardness (3.68 ± 0.18 GPa), fracture toughness (1.11 ± 0.10 MPa·m1/2), biaxial flexural strength (63.72 ± 2.35 MPa), and Young’s modulus (83.91 ± 1.93 GPa) among the composite samples. …”
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  5. 85

    Microstructure and Mechanical Properties of Aluminum Cast Alloy A356 reinforced with Dual-Size B4C Particles by J. R. Chandrashekar, M. H. Annaiah, R. Chandrashekar

    Published 2021-06-01
    “…., A356 plus 2% B4C (44µm size and 105µm size in 1:1 ratio), 4% B4C (3:1 ratio), and 6% B4C (1:3 ratio) were cast in finger molds, from which test specimens were prepared for hardness and tensile tests as well as for metallography. Vickers hardness tests, tensile tests and microstructure analysis using an optical microscope were conducted. …”
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  6. 86

    Effect of Welding Wires Containing ZrB2 Particles on Microstructure and Mechanical Properties of Spray-Formed 7055 Aluminum Alloy TIG Welded Joints by Ting Huang, Junhua Xu, Lihua Yu, Yunxuan Hu, Yun Cheng, Hao Zhang

    Published 2021-01-01
    “…The microstructure, hardness, and tensile strength of the welded joints were tested by metallographic microscope, SEM, EDS, Vickers hardness tester, and tensile testing machine. …”
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    Article
  7. 87

    Microstructure and Hardness of Cold Work Vanadis 6 Steel after Subzero Treatment at −140°C by Juraj Ďurica, Jana Ptačinová, Mária Hudáková, Martin Kusý, Peter Jurči

    Published 2018-01-01
    “…The hardness has been evaluated by the Vickers method. The obtained results assist to draw that subzero treatment reduces the retained austenite amount and increases the population density of carbides, compared to conventional heat treatment. …”
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  8. 88

    Grain refinement and improved mechanical properties of as-cast Mg-3Gd alloy by Zr addition by Mohammadreza Maghzi, Hamed Mirzadeh, Reza Mahmudi

    Published 2025-03-01
    “…Shear punch testing (SPT) and hardness measurements revealed substantial improvements in shear yield stress (SYS), ultimate shear strength (USS), and Vickers hardness (HV) with increasing Zr content. …”
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    Article
  9. 89

    Effect of Preheating on Microhardness, Degree of Conversion, and Depth of Cure of Various Bulk-Fill Composites by Berna Tarım, Zeynep Hale Keleş

    Published 2024-04-01
    “…Then, the top surfaces of samples were polished. 30 samples’ Vickers microhardness was measured from the top and bottom surfaces. …”
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  10. 90

    Evaluation of Effect of Herbal Irrigant on Microhardness of Root Dentin: An in vitro Study by Anuya Ravindra Koparde, Anupam Sandeep Sharma, Aniket Jadhav, Aishwarya Handa, Abhijit Bajirao Jadhav, Madhura A. Jadhav

    Published 2024-12-01
    “…Samples in Group 2 were submerged in distilled water for 2 min (control group). Vickers microhardness unit was used to test samples for microhardness. …”
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  11. 91

    Assessment of Dual-Cure Resin Cement Properties of Microhardness and Water Sorption/Solubility through Various Shades of Monolithic Zirconia by Khalid Dhafer Al Hendi, Mohammed Hamad Alyami, Naveen S. Yadav, Ali Saleh Alqahtani, Shaiq Gajdhar, Abdullah Ibrahim Almakrami

    Published 2024-12-01
    “…Two-millimeter-thick discs of each shade were used as substrates for curing the resin cement. A Vickers hardness tester was employed for measuring microhardness, while ISO 4049 standards were followed for examining water sorption and solubility. …”
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  12. 92

    In vitro evaluation of the physical characteristics and push-out bond strength of new experimental nano-MTA by Nada Omar, Yousra Aly, Haidy N. Salem

    Published 2024-12-01
    “…For each material, testing for setting time was done using Vicat apparatus, measurement of pH values was established by pH meter, the discharged calcium ions were measured at 1 day, 1 week and 4 weeks post setting via Spectro-photo-meter, three diagonal indentations were created at each specimen surface using Vickers hardness machine. Two groups (n = 10) of maxillary central incisors were used according to the type of root-end filling material. …”
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  13. 93

    Microstructure Characterisation and Modelling of Pre-Forging Solution Treatment of 7075 Aluminium Alloy Using Novel Heating Methods by Hao Wu, Zisong Lu, Steven Hill, Richard Turner

    Published 2024-12-01
    “…The properties of the edge and centre regions of the solution-treated billets, including the state of precipitates, grain structures, and Vickers hardness, are investigated and compared. Results have shown that the 7075 billets heated by conventional heating methods sufficiently dissolved the stable precipitates, achieving hardness ranging from 137 to 141 HV, in contrast to the benchmark unheated, as-received sample of approximately 70 HV. …”
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  14. 94

    Mechanical Properties of Multi-Layer Woven E-Glass/Epoxy in Variable Fiber-Mat Directions by Saif Aldeen Ghafel H., Nasri Salh M. Namer, Abdul Jabbar H. Ali

    Published 2023-06-01
    “…The tensile test was used to determine the strength of a material ratio to the fiber's direction and by using Vickers hardness to determine the hardness of composite and pure epoxy. …”
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  15. 95

    Enhancing tribological and corrosion characteristics of AA2099/GNP metal matrix nanocomposites through parametric optimization using Taguchi Technique by Ch Polayya, C S P Rao, Veeresh Kumar G B

    Published 2025-01-01
    “…The microstructural analysis employs scanning electron microscopy (SEM) and x-ray diffraction (XRD), while hardness is evaluated using specialized Vickers microhardness equipment. The results reveal a significant improvement in hardness with increasing GNP reinforcement content. …”
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  16. 96

    Investigation of microstructure and mechanical properties of austenitic steel bimetallic structures fabricated using wire arc direct energy deposition for remanufacturing applicati... by Rupendra Singh Tanwar, Suyog Jhavar

    Published 2025-06-01
    “…The hardness ranged from 206 to 289 Vickers hardness (HV), with a considerable increase at the interface due to concentration of δ ferrite. …”
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  17. 97

    Microstructural, mechanical and thermodynamic properties ınvestigation of the novel rare earth-free multicomponent Mg-15Al-8Ca-3Zn-2Ba alloy by Türe Y.

    Published 2023-01-01
    “…The general hardness analysis results of the alloy, measured by Brinell and Vickers tests, were determined to be ~77 and ~82, respectively. …”
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  18. 98

    THE EFFECTS OF ACIDIC SPORTS DRINKS ON SURFACE MICROHARDNESS OF DENTAL DIRECT RESTORATIVE MATERIALS AMONG ATHLETES by Gamen Luisa-Cristiana, Țehaniuc Teona-Alexandra, Tărăboanță-Gamen Andra-Claudia

    Published 2024-12-01
    “…Microhardness was determined by measuring the diagonal of the indentation and was expressed as Vickers hardness number. The obtained data was statistically analyzed using ANOVA One-way and Bonferroni post-hoc tests, with a significance level of 0.05.Findings: The obtained resultsafter submersion in RedBull solutionshowed differences between groups A and B (p=0.016); after submersion in Gatorade, differences were recorded between groups A and C (p=0.003), respectivelyB and C (p=0.039). …”
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  19. 99

    STUDI IDENTIFIKASI PASANGAN COMMERCIALLY PURE TITANIUM DAN UHMWPE UNTUK APLIKASI MATERIAL IMPLAN LUTUT by Firman Maulana Rusdi, Arini Dwi Cahyani

    Published 2024-12-01
    “…CP–Titanium hardness testing uses Vickers micro hardness, while for UHMWPE uses Shore D. …”
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  20. 100

    Mechanical evaluation of a novel resin infiltrated lithium-disilicate ceramic network versus resin infiltrated feldspathic ceramic network by Mariam Adel, Moustafa Aboushlieb, Nour A. Habib

    Published 2025-02-01
    “…Rectangular specimens were prepared from both materials, afterwards, flexural strength, fracture toughness, brittleness and Vickers’ hardness tests were investigated. Data were analyzed using independent sample-t test and paired sample-t test (n = 12, α = 0.05). …”
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