Showing 1 - 14 results of 14 for search '"Vickers"', query time: 0.07s Refine Results
  1. 1

    In vitro evaluation of the effect of three mouthwashes on microhardness of a composite resin by Somayeh Hoseini Tabatabaii, Shirin Lavaf, Arash Azizi

    Published 2011-01-01
    “…The purpose of this in vitro study was to investigate the effect of three commercially available mouthwashes (Irsha, Chlorhexidine, Oral-B) in Iran on the microhardness of Z100 composite resin.Materials and Methods: In this in vitro experimental study 30 cylinders of composite resin were fabricated and stored in distilled water for 24 hours. Vickers hardness (VH) values of the samples were measured using Vickers hardness tester. …”
    Get full text
    Article
  2. 2

    Structural changes of perfluorosulfonic acid polymer membrane (PFSA) under gamma-irradiation by Ghasem Forozani, Pezhman Shamshiri, Babak Zhaleh, Nasrin Sheikh

    Published 2015-02-01
    “…Moreover, the FT-IR spectra showed a novel absorption band at 1773 cm-1 after the irradiation and the XRD results indicated crystallinity improvement by increasing the absorbed dose. Vickers microhardness test showed that the hardness increased by increasing the absorbed dose.…”
    Get full text
    Article
  3. 3
  4. 4

    Effect of multi-pass friction stir processing on microstructure and mechanical properties of cast A216 alloy by Gholamreza Khalaj, Gholamreza Ghaffari, Bahram Abdolmaleki

    Published 2022-01-01
    “…The hardness of the stir zone increased from 165 Vickers to about 780 HV. Also, the abrasion resistance of the stirring area increased up to 2.5 times.…”
    Get full text
    Article
  5. 5

    MICROSTRUCTURE, HARDNESS AND SURFACE ROUGHNESS CHARACTERIZATION OF EBM FABRICATED Ti-6Al-4V SAMPLES by A. Mohammadi, B. Niroumand, A. Saboori

    Published 2022-03-01
    “…The porosity content of the samples was lower than that of some other additive manufacturing processes. Vickers micro-hardness of the samples was measured to be around 337 HV which was higher than those reported for other additive manufacturing processes of the alloy.…”
    Get full text
    Article
  6. 6

    Effect of process parameters on microstructure and microhardness of resistance spot welding in Zr-1%Nb alloy by Hamidreza Adibzadeh, Mohsen Asadi Asadabad, Alireza Alaei

    Published 2015-08-01
    “…In the microhardness investigation of the weld nugget cross section, the Vickers hardness measurement was performed in the direction of the weld nugget diameter on a base metal, HAZ, and weld nugget for the welded specimens with different parameters. …”
    Get full text
    Article
  7. 7

    Optimum rotational speed in FSW of copper canisters for nuclear waste by Mehrdad Ajabshiri, Hasan Rezaei, Ezat Nazari, Ahmad Nozad Golikand

    Published 2016-02-01
    “…Also, analysis of the metallographic images showed that the grain size in the nugget zone increases by increasing the rotational speed. Vickers hardness test was conducted on the welded samples and the maximum hardness was obtained at a rotational speed of 900 rpm. …”
    Get full text
    Article
  8. 8

    Evaluation of Cariogenic Potential of Commonly Used Oral Supplements on Childrens Deciduous Teeth by Saba Ebrahimiramezani, Zoya Pahlevani, Zahra Khosravi, Samad Moslehi

    Published 2023-03-01
    “…The amount of micro-hardness of the teeth was measured using the Vickers hardness testing machine on the first day and after 28 days. …”
    Get full text
    Article
  9. 9

    Evaluation of Microhardness and Microleakage of CEM Cement after Adding Water to Semi Setting Cement by Mehdi Tabrizizadeh, Fatemeh Ayatollahi, Fatemeh Valizadeh

    Published 2023-10-01
    “…The microhardness of the samples was measured with Vickers device after mounting in acrylic resin. Statistical analysis was performed using SPSS19 software and Mann-Whitney Kruskal-Wallis and one-way ANOVA tests. …”
    Get full text
    Article
  10. 10

    Investigation of microstructure and mechanical properties of welding metal of A516-Gr70 steel in the presence of TiO2 by SAW method by Reza Amini Najafabadi, Abbas Asadi

    Published 2021-11-01
    “…Also, in the case of weld metal hardness, by increasing of TiO2 from 0 to 27.54 gr, it decreases from 190 to 169 Vickers. The results showed that the use of TiO2 powder leads to improvement of mechanical properties, especially failure resistance in welded metal.…”
    Get full text
    Article
  11. 11

    Evaluation of the effect of nanohydroxyapatite-containing toothpaste and mouthwash on remineralization of early enamel caries and occluding of dentinal tubules by Abdolrahim Davari, Farnaz Farahat, Sepideh Abbasi

    Published 2022-05-01
    “…Then, the specimens were cut in the buccolingual direction in order to simultaneously evaluate the dentinal tubules and Vickers microhardness test was performed again and the before and after microhardness values were compared. …”
    Get full text
    Article
  12. 12

    Effect of multiple adhesive coating on the microshear bond strength and surface microhardness of bonded dentin after using four adhesives by Torabzadeh H, Ghasemi A, Asadian F, Akbarzadeh A

    Published 2010-01-01
    “…The cross-head speed was 0.5 mm/min. Vickers microhardness was tested on forty dentin disks which divided into four groups and prepared in the same manner used for microshear bond test. …”
    Get full text
    Article
  13. 13

    Synthesis of Boron Nanocomposites Doped on the Hydroxyapatite-Chitosan Surface and Its Effect on the Microhardness of Demineralized Tooth Enamel by Zahra Khamverdi, Ebrahim Yarmohammadi, Abbas Farmani, Salman Khazaee, Zeinab Mohammadi

    Published 2022-12-01
    “…The microhardness of the samples was performed by the Vickers test at three points. The SPSS software (version 19), one-way analysis of variance, and Tukey's test were used for statistical analysis of the data (α=0.05). …”
    Get full text
    Article
  14. 14

    Comparative analysis of urban livability with emphasis on physical indicators of the ten regions of Tabriz metropolis by atefeh farajollahi, mahamad reza pormahamdy, rahim heydari chianeh, Davod Mokhtari

    Published 2022-10-01
    “…In this regard, one-sample t-test in SPSS software environment, Vicker's multi-attribute decision model and interaction / structural impact analysis method were used using Mick Mac software to analyze the data. …”
    Get full text
    Article