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    Wyświetlanie 1-3 z 3
    Tytuł:
    Nanomechanical properties of different dental restorative materials
    Autorzy:
    Altan, H.
    Bilgic, F.
    Arslanoglu, Z.
    Kale, E.
    Köroğlu Kale, A.
    Altan, A.
    Sahin, O.
    Powiązania:
    https://bibliotekanauki.pl/articles/1068227.pdf
    Data publikacji:
    2016-07
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    62.20.-x
    62.20.Qp
    Opis:
    The aim of this study is to determine the hardness and roughness of glass ionomer cement, glass carbomer, and compomer by nanoindentation. Three different dental restorative materials: glass ionomer cement, glass carbomer cement, and compomer were used. Disc specimens (10 mm × 1 mm) were prepared from each material using teflon mold. All specimens were light cured according to the manufacturer's instructions. The specimens were then mounted in polyacrilic resin. After grinding and polishing the specimens were stored in distilled water at 37°C for 1 day. The specimens were investigated using nanoindenter. The highest nanohardness was measured for glass ionomer cement and the lowest for glass carbomer. Regarding roughness, glass ionomer cement and compomer showed the highest mean values. Glass ionomer cement and compomer exhibited similar nanomechanical properties. Glass carbomer had superior ability to be polished up.
    Źródło:
    Acta Physica Polonica A; 2016, 130, 1; 394-396
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Structure and Chosen Nanomechanical Properties of Amorphous-Crystalline Laser Weld
    Autorzy:
    Pilarczyk, W.
    Kania, A.
    Babilas, R.
    Pilarczyk, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1029767.pdf
    Data publikacji:
    2018-02
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    bulk metallic glasses
    nanoindenter
    surface topography
    nanomechanical properties
    Opis:
    Zr-based bulk metallic glasses attract the attention because of their good mechanical properties and glass-forming ability. A laser welding process has been applied to increase the capability of using amorphous materials in the industry. The plates of Zr₅₅Al₁₀Ni₅Cu₃₀ alloy were produced by die pressure casting method and welded by the TruLaser Station 5004. X-ray analysis and microscopic observation provided information about the structure and morphology of the cross-section of weld on the boundary of the heat affected zone and the fusion zone. Nanohardness and reduced Young modulus of the particular heat affected zone, fusion zone, and parent material were examined with Hysitron TI950 Triboindenter and with the Berkovich indenter. The presence of the amorphous and amorphous-crystalline phases was confirmed by related tests. The detailed topographic analysis revealed that the heat affected zone demonstrated a slight roughness characteristic of the crystalline phase and a smooth surface in the fusion zone. The main value of the nanohardness of particular weld zones has the similar order of magnitude. In turn, Er value is restricted in the range of 105.76-108.80 GPa. The main goal of this work is to present the structure and chosen nanomechanical properties of the Zr₅₅Cu₃₀Ni₅Al₁₀ laser weld.
    Źródło:
    Acta Physica Polonica A; 2018, 133, 2; 219-221
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effects of Third-generation LED LCU on Nanomechanical Properties of Orthodontic Adhesives
    Autorzy:
    Bilgic, F.
    Altan, H.
    Akinci Sözer, Ö.
    Arslanoglu, Z.
    Kale, E.
    Özarslan, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/1031919.pdf
    Data publikacji:
    2017-09
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    62.20.-x
    62.20.Qp
    Opis:
    The aim of this study was to compare the hardness and elastic modulus of orthodontic adhesives cured with different light-curing units, based on light-emitting diodes. Standardized samples of orthodontic adhesives, Transbond™ XT, Opal® Bond™ and Light Bond™ were prepared in cylinder blocks and cured for three seconds with Valo Ortho LED (Ultradent Products, South Jordan, Utah) and Valo LED High-Power Mode. After grinding and polishing, specimens were stored in distilled water at 37°C for one day. Specimens were investigated using nanoindenter. Employment of Valo Ortho unit has resulted in significantly higher elastic modules for Transbond™ XT (p=0.041). The highest nanohardness and elastic modules were measured for Transbond™ XT cured with Valo Ortho (9.47 GPa; 81.85 GPa, respectively) and lowest for Opal® Bond™ for both Valo Ortho (0.44 GPa; 14.52 GPa, respectively) and Valo High-Power groups (0.44 GPa; 11.84 GPa, respectively).
    Źródło:
    Acta Physica Polonica A; 2017, 132, 3; 697-701
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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