Showing 101 - 120 results of 154 for search '"Vickers"', query time: 0.07s Refine Results
  1. 101

    Evaluation of Flexural Strength and Microhardness of Different Type Glass Ionomer Cements by Kübra Bilge, Enes Mustafa Aşar, İrem İpek

    Published 2024-04-01
    “…A three-point bending test was performed using a universal testing device, and the maximum force values required to fracture the samples were determined in Newton by the device after the fracture. For the Vickers microhardness test measurements were made from different areas of the upper surfaces of each sample and the average of five measurements was calculated in MPa.Results: When comparing the flexural strength values, EQUIA Forte Fil group observed the highest flexural strength value, while Riva LC HV group had lowest flexural strength value. …”
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  2. 102

    Efficacy of a Novel Bioactive Glass-Polymer Composite for Enamel Remineralization following Erosive Challenge by Farnoosh Fallahzadeh, Soolmaz Heidari, Farhood Najafi, Maryam Hajihasani, Nooshin Noshiri, Neda F. Nazari

    Published 2022-01-01
    “…The samples were randomly divided into 3 groups of 15 and underwent Vickers microhardness test. X-ray diffraction (XRD) and field emission scanning electron microscopy/energy dispersive X-ray spectroscopy (FESEM/EDS) were performed. …”
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  3. 103

    Effect of ECAP process on deformability, microstructure and conductivity of CuCoNi alloy by Grzegorczyk B., Rusz S., Snopinski P., Hilšer O., Skowronek A., Grajcar A.

    Published 2023-01-01
    “…The microstructure evolution was studied by microscopic observations and electron back-scattered diffraction (EBSD) in a scanning electron microscope (SEM). The Vickers method was used to test the microhardness of the samples after various variants of the ECAP process. …”
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  4. 104

    Effects of Sliding Speed on Wear Behavior of High-Velocity Oxygen Fuel-Sprayed FeCrMoNiCuBSiC Metallic Glass Coatings by Lei Qiao, Botao Zhou, Ruifeng Li, Taotao Li, Yue Zhao, Xiaoqiang Zhang, Chul-Hee Lee

    Published 2024-12-01
    “…The coating had a dense structure (the porosity was 1.47 ± 0.32%) and high Vickers microhardness (848 ± 22 HV<sub>0.3</sub>). …”
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  5. 105

    EXPERIMENTAL STUDY THE MECHANICAL PROPERTIES OF GMAW WELDING RESULTS ON S355J2+N MATERIAL WITH POST WELD HEAT TREATMENT (PWHT) by Muhammad Arif, Indarto Yuwono, Alfi Tranggono Agus Salim, Alit Dharmawan, Dara Lathiful Zuriah

    Published 2025-01-01
    “…The research method uses experiments with PWHT temperatures at 450 °C, 750 °C, and non-PWHT to find out the mechanical properties of materials, use the tensile test and micro-Vickers hardness test. Meanwhile, to determine the microstructure formed is used micro examination. …”
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  6. 106

    Postprocessing Study for the Controllable Structures of Ceramic Green Parts Realized by a Flexible Binder Jetting Printing (BJP) Solution by Shu Cao, Fangxia Xie, Xueming He, Chaofeng Zhang, Meiping Wu

    Published 2020-01-01
    “…In comparison, high-density specimens performing poor infiltration obtained limited density increment after final sintering, but better mechanical properties and surface strengthening were realized, exhibiting final densities, flexural strength, comprehensive strength, surface roughness Ra, and Vickers hardness of 70.1%, 63.22 MPa, 450.18 MPa, 9.73 μm, and 4.58 GPa, respectively. …”
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  7. 107

    Development of Newly Formulated Nanoalumina-/Alkasite-Based Restorative Material by Reham M. Abdallah, Neven S. Aref

    Published 2021-01-01
    “…Surface microhardness and roughness were evaluated using the Vickers microhardness test and surface profilometer, respectively. …”
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  8. 108

    Synergistic Sintering of Lignite Fly Ash and Steelmaking Residues towards Sustainable Compacted Ceramics by V. G. Karayannis, A. K. Moutsatsou, A. N. Baklavaridis, E. L. Katsika, A. E. Domopoulou

    Published 2017-01-01
    “…Moreover, the shrinkage, apparent density, water absorption, and Vickers microhardness (HV) were investigated at different sintering temperatures and raw material compositions. …”
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  9. 109

    Evaluating the Effect of Active Charcoal-Containing Toothpaste on Color Change, Microhardness, and Surface Roughness of Tooth Enamel and Resin Composite Restorative Materials by Ali Forouzanfar, Pouria Hasanpour, Yasaman Yazdandoust, Hosein Bagheri, Hamideh Sadat Mohammadipour

    Published 2023-01-01
    “…Before and after brushing cycles, color variables (ΔL, Δa, Δb), total color change (ΔE), plus Vickers microhardness were evaluated. Two samples of each group were prepared for surface roughness assessment via atomic force microscope. …”
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  10. 110

    In-situ synthesized WC reinforcement phase on microstructural evolution, toughness and tribological properties of Mo2FeB2-based composite coatings fabricated by laser cladding by Hao Zhang, Yang Zhang

    Published 2025-01-01
    “…Microhardness was measured by a Vickers microhardness tester and analyzed using an optical microscope. …”
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  11. 111

    The effect of high temperature deformation on the austenite reversion transformation and η-Ni3Ti precipitation behavior in a Ti–Mo maraging steel by Chih-Yuan Chen, Iting Chiang, Yung-Chang Kang

    Published 2025-01-01
    “…The above metallurgical phenomenon was further verified by Vickers hardness measurement. For example, under the fixed ageing temperature of 520 °C, the distributions of HV0.1 values were 480–680 and 370–660, respectively, for Ti–Mo PHSSs subjected to hot deformation strains of 35 % and 70 %, respectively. …”
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  12. 112

    Characteristics of Nanophase WC and WC-3 wt% (Ni, Co, and Fe) Alloys Using a Rapid Sintering Process for the Application of Friction Stir Processing Tools by Daeup Kim, Young Choi, Yongil Kim, Seungboo Jung

    Published 2015-01-01
    “…Even though no phase changes were observed after the ball milling process the phases of W2C and WC1-x appeared in all sintered samples after sintering. The Vickers hardness and fracture toughness of the WC, WC-3 wt% Ni, WC-3 wt% Co, and WC-3 wt% Fe samples ranged from 2,240 kg mm2 to 2,730 kg mm2 and from 6.3 MPa·m1/2 to 9.1 MPa·m1/2, respectively.…”
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  13. 113

    Evaluation the effect of sesame oil on root dentin microhardness after application of chloroform and orange oil as gutta percha solvents (an in- vitro study). by Nsar Muhyaddin Aziz

    Published 2022-12-01
    “…The root halves from each group were subject to Vickers hardness test to measure micro hardness, then sesame oil were applied by bonding brush for 15 mint on each root dentin surface from all groups finally all roots subject to vicker hardness test to obtain the final micro hardness values. …”
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  14. 114

    Sulla stima di macro, micro e nano-durezza di materiali metallici mediante analisi elasto-plastiche agli elementi finiti by Luca Susmel, David Taylor

    Published 2011-12-01
    “…Il lavoro sintetizzato nel presente articolo si pone come obiettivo primario quello di investigare lapossibilita di stimare, mediante un approccio elasto-plastico agli elementi finiti, la durezza dei materiali metalliciconvenzionali, e questo sia a livello macroscopico, che a livello microscopico, che, infine, a livello nanoscopico.Per verificare validita e accuratezza della metodologia FEM sviluppata, sono state condotte una serie di analisisperimentali su tre materiali metallici aventi caratteristiche metallurgiche estremamente diverse: una legadfalluminio (Al 7075-T6), un acciaio a basso tenore di carbonio (BS970-En3B) e, infine, un acciaio austenitico(AISI 316L). Lfindentazione Vickers e stata simulata con analisi elasto.plastiche agli elementi finiti considerandocarichi di prova nellfintervallo tra 490 N e 490 ƒÊN e calibrando le simulazioni numeriche mediante curvemonotone tensione.deformazione ottenute da prove di trazione eseguite utilizzando provini sia di dimensioneconvenzionale che aventi larghezza della zona calibrata dellfordine dei 100 ƒÊm.La sistematica comparazione tra risultati sperimentali e simulazioni numeriche ha posto in evidenza comelfaumentare del valore della durezza misurata al diminuire della dimensione dellfimpronta possa essere imputataal ruolo giocato dalla reale morfologia del materiale, ruolo che diventa predominante sulla plasticitaconvenzionale quando le dimensioni della superficie indentata diventano comparabili con le dimensioni mediedella grana cristallina delle leghe esaminate. …”
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  15. 115

    In Vitro Effect of Mouthrinses on the Microhardness of Three Different Nanohybrid Composite Resins by Jhonn Luis Bernaldo-Faustino, Julissa Amparo Dulanto-Vargas, Kilder Maynor Carranza-Samanez

    Published 2023-01-01
    “…The present study aimed to compare Vickers microhardness (VHN) in vitro of nanohybrid composite resins (NCRs) immersed in mouthrinses. …”
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  16. 116

    Antibiofilm effect of Nano chitosan and calcium hydroxide intracanal medications and their effects on the microhardness and chemical structure of radicular dentine by Maha Nasr, Ahmed Abdou, Dina M. Bassiouny, Reham Hassan

    Published 2025-01-01
    “…For the effect on microhardness, 56 specimens were subjected to Vicker’s microhardness test before and after 1 week, and 4 weeks of medication application. …”
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  17. 117

    Synthesis, Mechanical, and Tribological Performance Analysis of Stir-Casted AA7079: ZrO2 + Si3N4 Hybrid Composites by Taguchi Route by G. Jegan, P. Kavipriya, T. Sathish, S. Dinesh Kumar, T. Samraj Lawrence, T. Vino

    Published 2021-01-01
    “…The prepared stir-casted materials are tested by wear analysis and microhardness analysis, through Pin-on-Disc wear tester and Vickers hardness tester, respectively. Wear parameters are optimized, the minimum wear rate is evaluated, and also the wear worn-out surfaces are examined through SEM analysis.…”
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  18. 118

    Effect of the Electrolyte Temperature and the Current Density on a Layer Microhardness Generated by the Anodic Aluminium Oxidation by Emil Spišák, Miroslav Gombár, Ján Kmec, Alena Vagaská, Erika Fechová, Peter Michal, Ján Piteľ, Daniel Kučerka

    Published 2015-01-01
    “…The paper investigates the influence of the chemical composition and temperature of electrolyte, the oxidation time, voltage, and the current density on Vickers microhardness of aluminium oxide layers, at the same time. …”
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  19. 119

    Effect of two light activated in-office bleaching agents on microhardness of different esthetic restorative materials by Özgün Yusuf Özyılmaz, Tuncay Alptekin, Filiz Aykent, Haluk Barış Kara

    Published 2018-08-01
    “…Baseline and after bleaching microhardness measurements were taken with a Vickers hardness tester that was used with a 300 g for the porcelain and 100 g for the composite and ormocer specimens, the dwell time was 30 s for all groups. …”
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  20. 120

    Effect of three different intracanal medications on canal wall cleanliness and radicular dentin microhardness by Amira Ibrahim Mohamed, Soha Adel Abdou, Yousra Aly

    Published 2023-12-01
    “…The other half of each specimen was used to measure dentin microhardness using the Vickers Microhardness Tester. Statistical analysis was done. …”
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