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Structural, chemical and optical characterizations of an experimental SiO2-Y-TZP ceramic produced by the uniaxial/isostatic pressing technique.
Journal of the Mechanical Behavior of Biomedical Materials ( IF 3.3 ) Pub Date : 2020-04-01 , DOI: 10.1016/j.jmbbm.2020.103749
Victor Mosquim 1 , Brunna Mota Ferrairo 2 , Mariele Vertuan 1 , Aroldo Geraldo Magdalena 3 , Carlos Alberto Fortulan 4 , Paulo Noronha Lisboa-Filho 5 , Paulo Francisco Cesar 6 , Estevam Augusto Bonfante 2 , Heitor Marques Honório 7 , Ana Flávia Sanches Borges 1
Affiliation  

This study aimed to produce a new SiO2+Y-TZP ceramic via uniaxial/isostatic compression that was structurally and chemically characterized relating to its translucency and flexural strength. SiO2 and Y-TZP were mixed using a ball mill, pressed and sintered at 1150 °C. The optical and mechanical properties of the specimens were compared to lithium disilicate (LD) and zirconia-reinforced lithium silicate (ZLS) (Kruskal-Wallis, α = 0.05). The Fourier Transform Infrared Spectroscopy bands suggested an interaction between Si, O and Zr. Contrast ratio and translucency parameter of the experimental ceramic were higher and lower, (p = 0.000001) respectively, than those of the LD and ZLS. The experimental ceramic presented similar flexural strength to ZLS, but lower than LD (p < 0.0001). It can be concluded that this processing method is efficient to obtain a SiO2+Y-TZP ceramic and 1150 °C crystallizes SiO2 without inducing t-m transformation. The SiO2+Y-TZP ceramic presented lower translucency and higher masking ability than the commercially available glass-ceramics, but similar flexural strength to one glass-ceramics.



中文翻译:

通过单轴/等静压技术生产的实验性SiO2-Y-TZP陶瓷的结构,化学和光学特性。

这项研究旨在通过单轴/等静压生产一种新型的SiO 2 + Y-TZP陶瓷,该陶瓷的结构和化学特性与其半透明性和抗弯强度有关。二氧化硅2用球磨机将Y-TZP和Y-TZP混合,在1150℃下压制和烧结。将样品的光学和机械性能与二硅酸锂(LD)和氧化锆增强的硅酸锂(ZLS)(Kruskal-Wallis,α= 0.05)进行了比较。傅立叶变换红外光谱带表明Si,O和Zr之间存在相互作用。与LD和ZLS相比,实验陶瓷的对比度和半透明参数分别更高和更低(p = 0.000001)。实验陶瓷的抗弯强度与ZLS相似,但低于LD(p <0.0001)。可以得出结论,该处理方法对于获得SiO 2 + Y-TZP陶瓷是有效的,并且在1150°C时SiO 2结晶而不会引起tm转变。二氧化硅2 + Y-TZP陶瓷比市售玻璃陶瓷具有较低的半透明性和较高的遮盖能力,但与一种玻璃陶瓷具有相似的抗弯强度。

更新日期:2020-04-01
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