Structural Changes by Thermal Treatment up to Glass Obtention of P<sub>2</sub>O<sub>5</sub>-Na<sub>2</sub>O-CaO-SiO<sub>2</sub>Compounds with Bioglass Composition Types

• 作者: Cristina Volzone Franco Matías Stábile
• 来源期刊: 玻璃与陶瓷期刊(英文)
• 学科: 医学
• 关键词: GLASS CERAMICS Structure Thermal Treatment
• 年，卷（期）: 2013,（1）
• 页码范围: 53-57
• 页数: 5页
• 分类号: R73

摘要

P2O5-Na2O-CaO-SiO2 compounds are the base of certain glass types. Glasses are solids obtained by fast cooling of melted mix of certain compounds. Different compositions give origin to many products with a variety of applications such as: bottles, coatings, windows, tools for chemical industry, laboratory equipment, optics, as bioceramics, etc. The aim of this work was to analyze structural changes of different composition in the P2O5-Na2O-CaO-SiO2 systems thermally treated up to 1250?C, that is to say, before glass formation, by X ray diffraction. Intermediate and final developed phases up to 1100?C thermal treatment in samples were generated as a function of Na2O/CaO (1 and 1.62) and P2O5/Na2O ratios (0, 0.2 and 0.245). High-and low-combeites, calcium and sodium-calcium silicate were found at the highest studied temperature.