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首页> 外文期刊>Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites >Structure, properties and in-vitro response of SiO2-Na2O-CaO-P2O5 system based glass-ceramics after partial replacement of Na2O by Li2O
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Structure, properties and in-vitro response of SiO2-Na2O-CaO-P2O5 system based glass-ceramics after partial replacement of Na2O by Li2O

机译：基于SiO2-Na2O-CaO-P2O5玻璃陶瓷的结构，性质和体外反应在Li2O部分替代Na2O的部分替代后

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摘要

Effect of lithium oxide substitution on the structure, in-vitro chemical dissolution and mechanical properties of melt derived 4555 based glass-ceramics in 46.1SiO(2) (24.4-x)Na2O 26.9CaO 2.6P(2)O(5) x Li2O (x = 0, 2, 4, 6, and 10 mole %) system was studied. Raman analysis had shown the presence of Q(2) silica tetrahedra and crystalline phosphorus in the glass-ceramics samples. Higher mechanical properties of lithia containing glass and glass-ceramics were noticed due to compact glass structure in presence of small sized Li+ ions. Hexagonal shaped combeite (Na2O center dot 2CaO center dot 3SiO(2)) was the only crystalline phase. Fourier transform infrared spectroscopy (FTIR) and Raman spectra confirmed formation of carbonated hydroxyapatite (HCA) on the glass-ceramics surface in SBF solution. Scanning electron microscopy (SEM) with energy dispersive X-ray analysis (EDX) corroborated cotton ball like morphology as carbonated hydroxyapatitel ayer on lithium containing glass-ceramics sample surface.
机译：研究了在46.1SiO（2）（24.4-x）Na2O 26.9CaO 2.6P（2）O（5）x Li2O（x=0,2,4,6和10摩尔%）体系中，锂氧化物取代对熔融4555基微晶玻璃结构、体外化学溶解和力学性能的影响。拉曼光谱分析表明，微晶玻璃样品中存在Q（2）二氧化硅四面体和结晶磷。含锂玻璃和微晶玻璃具有更高的机械性能，这是因为在小尺寸锂离子存在下，玻璃结构紧凑。六角形的combeite（Na2O中心点2CaO中心点3SiO（2））是唯一的晶相。傅里叶变换红外光谱（FTIR）和拉曼光谱证实了在SBF溶液中微晶玻璃表面形成碳酸化羟基磷灰石（HCA）。扫描电子显微镜（SEM）和能量色散X射线分析（EDX）证实了含锂微晶玻璃样品表面上的碳化羟基磷灰石层的棉球状形貌。

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