摘要
围绕含AgCl钠硼硅酸盐玻璃的熔融制备、析晶热处理、高温拉伸及高压还原工艺,对于玻璃中卤化银纳米棒的形成、定向排布以及对于偏光性能的影响规律进行了研究,发现卤化银晶粒更易于在富钠硼相中析出,较佳的热处理制度是析晶温度615℃、保温时间12 h。玻璃中卤化银纳米棒的形成及定向是玻璃拉伸温度、拉伸应力与拉伸速度三者的有机结合。在拉伸温度570℃、拉力735 N、拉伸速度120 mm/min条件下,玻璃样品中AgCl纳米棒的平均直径98 nm、平均长度558 nm、纳米棒的平均长径比1.0:5.6,并沿玻璃拉伸方向定向排布。通过高压还原后玻璃的偏光性能研究,拉伸后玻璃表层单位面积内AgCl纳米棒的数量越多,还原处理后玻璃的消光比越高。
The formation and directional arrangement of silver halide nanorods in glass and their influences on the polarization properties were investigated. The results show that silver halide particles are easier to precipitate in a sodium boron rich phase. The optimum heat treatment condition for the crystallization is at 615 ℃ for holding time of 12 h. The formation and orientation of silver halide nanorods in glass is a winning combination of glass stretching temperature, stress and speed. The average diameter of AgCl nanorods in glass is 98 nm, the average length is 558 nm, the average aspect ratio of the nanorods is 1:5.6, and the nanorods are oriented along the stretching direction of glass when the stretching temperature is 570 ℃, the stress is 735 N, and the speed is 120mm/min. According to the polarizing property of glass after high-pressure reduction, the more AgCl nanorods in the unit area of the stretched glass surface is, the higher the extinction ratio of the reduced glass will be.
作者
冯晋阳
孙玉娜
伍冬华
雷堃
赵修建
FENG Jinyang;SUN Yuna;WU Donghua;LEI Kun;ZHAO Xiujian(State Key Laboratory of Silicate Materials for Architectures,Wuhan University of Technology,Wuhan 430070,China)
出处
《硅酸盐学报》
EI
CAS
CSCD
北大核心
2023年第1期171-177,共7页
Journal of The Chinese Ceramic Society
基金
湖北省先进材料领域重点研发计划(2020BAB061)。
关键词
玻璃
定向排布
卤化银
纳米棒
glass
orientation arrangement
silver halide
nanorod