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以硼硅酸盐玻璃为基础玻璃体系制备含卤化银的光致变色玻璃.采用同步热分析仪(DSC)和低温黏度计测试了玻璃的特征温度,并将该温度作为热处理工艺的参考温度,研究不同处理温度和保温时间对玻璃光色性能的影响.研究结果表明,在一定范围内,通过调整热处理温度和保温时间,可调节玻璃的饱和暗化度和复明透过率.当热处理温度从560℃升至620℃时,玻璃的饱和变暗透过率从82.8%变化至20.8%,复明透过率从86.9%变化至45.5%;当保温时间从0.5 min延长至30 min时,样品的饱和暗化透过率从85.7%变化至20.8%,复明透过率从87.4%变化至45.5%,通过热处理控制工艺可以实现对玻璃光色性能的精确调控. 相似文献
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热处理对离子交换法制备光致变色玻璃光色性能的影响 总被引:1,自引:1,他引:0
热处理对离子交换法制备光致变色玻璃光色性能的影响王民权,陈庆云,樊先平(浙江大学材料科学与工程学系310027)EffectofHeatTreatmentonthePhotochromicPropertiesofPhotochromicGlassby... 相似文献
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利用扫描电镜(SEM)、透射电镜(TEM)、X射线小角散射(SAXS)和电子探针对含铜、镉卤化合物的R_2O-A1_2O_3-B_2O_3-SiO_2系同一化学组成玻璃经不同热处理后的相分离的状况和形貌进行了观察、表面微区组分分析.发现了相分离后分散相颗粒和光敏微晶颗粒的尺寸与光色性的关系. 相似文献
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银离子交换法制备光致变色玻璃的组成研究 总被引:1,自引:1,他引:0
本文应用差热分析、透射电镜、扫描电镜和X射线能谱等实验方法,研究了R2O-Al2O3-B2O3-SiO2系统玻璃组成对其分相、离子交换以及光色性能的影响规律;确定了能获得良好光色性能的最适宜玻璃组成范围。 相似文献
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无银碱铝硼硅酸盐玻璃,经适当的离子交换处理及热处理,可得到光色玻璃,本文提出了利用离子交换法研制光色玻璃的新方法。 相似文献
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Rods of Corning code 7070 alkali borosilicate glass were stretched or compressed at 600° to 700°C before or after discrete phase separation and given a postpulling heat treatment at around 500°C. As expected, sections of the rods displayed anomalous birefringence which has been identified by Takamori to originate from anisotropy in the form and the distribution of the second-phase particles. Specimens so obtained were reheated, and the birefringence measured as a function of temperature to separate the contributions of form, distribution, and the thermal expansion mismatch (if any) between the separated phases. It is clear that the form birefringence in 7070 glass is positive for stretched rods and negative for compressed rods and decays at lower temperatures than does the distribution birefringence which has an opposite sign. TEM replica micrographs show that the distribution birefringence decays as a function of temperature mostly because of phase dissolution and the reappearance of yet another phase randomly. 相似文献