The morphology of lead-silicate glasses and nanocomposites doped with iron oxide

The topography of iron-doped glasses and glass-ceramics were studied. Samples has the composition of 50SiO2–(50−x)PbO–xFe2O3, where x=15, 20 and 25 (in mol%). All sampleswere prepared by the conventional melt quenching technique; the melting was conducted in air at 1623 K in alumina crucibles. The melts were poured on a brass plate preheated to 573 K and formed into button-shaped samples. Afterwards pellets wereannealed at 673K, cooledwith the furnace and polished to the thickness of about 1mm. The microstructure of all samples was determined by means of atomic forcemicroscopy at their fresh fractureswith the use of NT-MDT Ntegra AFM. Detailed information can be found in: http://dx.doi.org/10.1016/j.ssi.2013.10.008本研究针对掺铁玻璃及玻璃陶瓷的表面形貌展开探究。实验样品的组成为50SiO₂–(50−x)PbO–xFe₂O₃，其中x取值为15、20和25（摩尔百分比）。所有样品均采用传统熔融淬火法制备：于空气气氛中、使用氧化铝坩埚在1623 K温度下进行熔融。将熔融液倾倒至预热至573 K的黄铜板上，压制成纽扣状样品。随后将制得的样品置于673 K下退火，随炉冷却后研磨抛光至约1 mm厚度。采用NT-MDT Ntegra原子力显微镜（atomic force microscopy, AFM）对所有样品的新鲜断口进行测试，以此表征其微观结构。详细研究信息可参见：http://dx.doi.org/10.1016/j.ssi.2013.10.008