热处理与二次化学强化对玻璃应力层深度的影响
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摘要
应力层深度是衡量化学强化玻璃抵抗裂纹扩展能力的重要指标,提高应力层深度对于改善化学强化玻璃的使用性能具有重要的意义。以国产高铝玻璃为研究对象,研究了化学强化与热处理对玻璃应力层深度、表面压应力和抗弯强度的影响。研究表明,对化学强化玻璃的热处理可以显著增加玻璃的应力层深度,但是抗弯强度也会明显降低;对热处理后的玻璃的二次化学强化,可进一步增加玻璃的应力层深度,并显著提升玻璃表面压应力与抗弯强度。该方法在不延长工艺时间的前提下,可显著增加玻璃的应力层深度,并避免高温或长时间化学强化所引起的力学性能降低。
Depth of layer (DOL) of chemically strengthened glasses is one of the key factors to evaluate the crack propagation resistance,and large DOL is full of significance to improve the performance of the chemically strengthened glasses. The effects of chemical strengthening and heat-treatment on the DOL,compressive stress,and flexural strength of domestic aluminosilicate glasses were investigates. It is found that heat-treatment of the chemically strengthened glasses can greatly enlarge the DOL,but detrimentally reduce the flexural strength. A second-step chemical strengthening on the heat-treated glasses can further improve the DOL,and significantly increase the compressive stress and flexural strength of the glasses.Without increasing the processing time,combination of heat-treatment and chemical strengthening can produce glasses with large DOL,and avoid the high processing temperature and long processing time induced relaxation of mechanical properties.
Depth of layer (DOL) of chemically strengthened glasses is one of the key factors to evaluate the crack propagation resistance,and large DOL is full of significance to improve the performance of the chemically strengthened glasses. The effects of chemical strengthening and heat-treatment on the DOL,compressive stress,and flexural strength of domestic aluminosilicate glasses were investigates. It is found that heat-treatment of the chemically strengthened glasses can greatly enlarge the DOL,but detrimentally reduce the flexural strength. A second-step chemical strengthening on the heat-treated glasses can further improve the DOL,and significantly increase the compressive stress and flexural strength of the glasses.Without increasing the processing time,combination of heat-treatment and chemical strengthening can produce glasses with large DOL,and avoid the high processing temperature and long processing time induced relaxation of mechanical properties.
引文
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[13]宋培煜,庞欢欣,马强,等.第二步离子交换时间对钠铝硅系统力学敏感玻璃的影响[J].硅酸盐通报,2016,35(7):1985-1989.
[14]Abrams M B,Green D J,Glass S J.Fracture behavior of engineered stress profile soda lime silicate glass[J].Journal of Non-Crystalline Solids,2003,321(1):10-19.
[15]Jiang L B,Li X Y,Guo X T,et al.Stress relaxation of ion exchanged float aluminosilicate glass at different temperature[J].Advanced Materials Research,2013,650:216-219.
[16]王立祥,刘振甫,金文国.影响化学强化玻璃质量的因素分析[J].玻璃,2012,39(4):27-31.
[17]Jiang L,Guo X,Li X,et al.Different K+_Na+inter-diffusion kinetics between the air side and tin side of an ion-exchanged float aluminosilicate glass[J].Applied Surface Science,2013,265(2):889-894.
[2]Gy R.Ion exchange for glass strengthening[J].Materials Science&Engineering B,2008,149(2):159-165.
[3]田英良,李俊杰,杨宝瑛,等.化学增强型超薄碱铝硅酸盐玻璃发展概况与展望[J].燕山大学学报,2017,41(4):283-292.
[4]Varshneya A K.Chemical strengthening of glass:lessons learned and yet to be learned[J].International Journal of Applied Glass Science,2010,1(2):131-142.
[5]姜良宝,厉蕾,张官理,等.化学强化铝硅酸盐玻璃研究进展[J].材料工程,2014,42(10):106-112.
[6]欧迎春,马眷荣,张保军.离子交换玻璃表面性质研究[J].硅酸盐通报,2004,23(6):20-23.
[7]Ipek E,Guldiren D,Aydin S.Chemical tempering of soda lime silicate glasses by ion exchange process for the improvement of surface and bulk mechanical strength[J].Journal of Non-Crystalline Solids,2017,473:170-178.
[8]李晨蕊,刘超.低铝玻璃化学法强化工艺研究[C].全国玻璃科学技术年会论文专集,2015.
[9]张峙琪,李伟捷,杨修春,等.超薄玻璃化学强化的研究进展[J].玻璃与搪瓷,2009,37(4):40-45.
[10]和浩浩,夏家群,王雨丝,等.不同功率超声波对玻璃化学强化离子交换的影响[J].价值工程,2016,35(33):129-130.
[11]李西川,孟玲,李振,等.碱性助剂对玻璃化学强化性能的影响研究[J].硅酸盐通报,2015,34(8):2414-2418.
[12]刘沈龙,张保军,黄友奇,等.离子交换增强熔盐添加剂除杂机理的研究[J].材料导报,2013,27(10):120-123.
[13]宋培煜,庞欢欣,马强,等.第二步离子交换时间对钠铝硅系统力学敏感玻璃的影响[J].硅酸盐通报,2016,35(7):1985-1989.
[14]Abrams M B,Green D J,Glass S J.Fracture behavior of engineered stress profile soda lime silicate glass[J].Journal of Non-Crystalline Solids,2003,321(1):10-19.
[15]Jiang L B,Li X Y,Guo X T,et al.Stress relaxation of ion exchanged float aluminosilicate glass at different temperature[J].Advanced Materials Research,2013,650:216-219.
[16]王立祥,刘振甫,金文国.影响化学强化玻璃质量的因素分析[J].玻璃,2012,39(4):27-31.
[17]Jiang L,Guo X,Li X,et al.Different K+_Na+inter-diffusion kinetics between the air side and tin side of an ion-exchanged float aluminosilicate glass[J].Applied Surface Science,2013,265(2):889-894.