Effect of MgO Content on Structure and Properties of Glass-Ceramics

Abstract

Abstract: Li₂O-Al₂O₃-SiO₂ glass-ceramics have excellent optical and mechanical properties. In this paper, the Li₂O-Al₂O₃-SiO₂ transparent glass-ceramics with diorthite and lithium disilicate as the main crystal phase were prepared. The influence of MgO content on the crystallization behavior and structure of glass-ceramics was studied by DSC, XRD and SEM, and the influence of MgO content on the mechanical properties of glass-ceramics was studied by Vickers hardness, bending strength and other test methods. The results show that when the MgO content (mass fraction) increases from 0% to 3%, the crystallization temperature of the basic glass decreases from 771 ℃ to 729 ℃, and the crystallization ability is enhanced, basides, the crystallinity increases from 62% to 72%, and the grain size increases from 29 nm to 33 nm. With the increase of MgO content, β-quartz solid solution precipitates out of the glass-ceramics and the bending strength increases.

Key words: Li₂O-Al₂O₃-SiO₂ glass-ceramics, MgO, crystallizabitity, petalite, lithium disilicate, β-quartz solid solution

CLC Number:

TQ171

PENG Ruixin, HAN Han, LIN Hongjian, LI Xiaofan, JIANG Hong. Effect of MgO Content on Structure and Properties of Glass-Ceramics[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2021, 40(10): 3497-3503.

References

[1] 刘秀状,黄小凤,马丽萍,等.MgO对黄磷炉渣微晶玻璃析晶影响[J].硅酸盐通报,2018,37(8):2606-2609+2615.
LIU X Z, HUANG X F, MA L P, et al. Effect of MgO on crystallization of yellow phosphorus slag glass-ceramics[J]. Bulletin of the Chinese Ceramic Society, 2018, 37(8): 2606-2609+2615 (in Chinese).
[2] 包镇红,江伟辉,苗立锋,等.MgO/Al₂O₃比对MgO-Al₂O₃-SiO₂系统玻璃分相与析晶的影响[J].材料导报,2018,32(24):4253-4257.
BAO Z H, JIANG W H, MIAO L F, et al. Effect of MgO/Al₂O₃ ratio on phase-separation and crystallization of MgO-Al₂O₃-SiO₂ glass[J]. Materials Review, 2018, 32(24): 4253-4257 (in Chinese).
[3] 程金树,郑伟宏,楼贤春,等.MgO/ZnO对锂铝硅系微晶玻璃性能的影响[J].武汉理工大学学报,2006,28(2):4-6+13.
CHENG J S, ZHENG W H, LOU X C, et al. Influence of MgO/ZnO on the properties of LAS glass-ceramic[J]. Journal of Wuhan University of Technology, 2006, 28(2): 4-6+13 (in Chinese).
[4] 张翠玲,陆雷,王永志,等.不同MgO/Al₂O₃的LMAS系微晶玻璃的显微结构和性能的研究[J].中国陶瓷,2010,46(2):26-29.
ZHANG C L, LU L, WANG Y Z, et al. Effect of different MgO/Al₂O₃ on the microstrcture and properties of lmas glass-ceramics[J]. China Ceramics, 2010, 46(2): 26-29 (in Chinese).
[5] MA J, CHEN C Z, WANG D G, et al. Effect of MgO addition on the crystallization and in vitro bioactivity of glass ceramics in the CaO-MgO-SiO₂-P₂O₅ system[J]. Ceramics International, 2012, 38(8): 6677-6684.
[6] HSIANG H I, YUNG S W, WANG C C. Effects of the addition of alumina on the crystallization, densification and dielectric properties of CaO-MgO-Al₂O₃-SiO₂ glass in the presence of ZrO₂[J]. Ceramics International, 2014, 40(10): 15807-15813.
[7] ZDANIEWSKI W. Crystallization and structure of a MgO-Al₂O₃-SiO₂-TiO₂ glass-ceramic[J]. Journal of Materials Science, 1973, 8(2): 192-202.
[8] LARSEN P H, POULSEN F W, BERG R W. The influence of SiO₂ addition to 2MgO-Al₂O₃-3.3P₂O₅ glass[J]. Journal of Non-Crystalline Solids, 1999, 244(1): 16-24.
[9] 江亿,李元哲,狄洪发.关于透过体系透过率计算方法的探讨[J].太阳能学报,1980,1(2):166-175.
JIANG Y, LI Y Z, DI H F. A research of the method for calculation of the transmittance of partially transparent mediums[J]. Acta Energiae Solaris Sinica, 1980, 1(2): 166-175 (in Chinese).
[10] GUO X Z, CAI X B, SONG J, et al. Crystallization and microstructure of CaO-MgO-Al₂O₃-SiO₂ glass-ceramics containing complex nucleation agents[J]. Journal of Non-Crystalline Solids, 2014, 405: 63-67.
[11] 文潮,吕宝桐.脆性材料抗弯强度分布规律的研究[J].机械科学与技术,1998,17(4):121-123
WEN C, LÜ B T. Research on distribution law of flexural strength of brittle materials[J]. Mechanical Science and Technology, 1998, 17(4): 121-123 (in Chinese)
[12] 刘梦蝶,高婧,王富,等.氧化锆对二硅酸锂玻璃陶瓷力学性能的影响[J].临床口腔医学杂志,2012,28(3):138-141.
LIU M D, GAO J, WANG F, et al. Effect of zirconia content on flexural strength and fracture toughness of dental experimental lithium disilicate glass-ceramic[J]. Journal of Clinical Stomatology, 2012, 28(3): 138-141 (in Chinese).
[13] 钱冬冬,张蕾,骆小平,等.反复烧结对牙科二硅酸锂玻璃陶瓷颜色和透光性的影响[J].华西口腔医学杂志,2015,33(1):50-53.
QIAN D D, ZHANG L, LUO X P, et al. Effect of repeated sintering on the color and translucency of dental lithium disilicate-based glass ceramic[J]. West China Journal of Stomatology, 2015, 33(1): 50-53 (in Chinese).
[14] 林燕喃,林城,陈含德,等.硅锂比对二硅酸锂玻璃陶瓷的结构与性能的影响[J].硅酸盐学报,2019,47(2):255-259.
LIN Y N, LIN C, CHEN H D, et al. Effect of SiO₂/Li₂O ratio on structure and property of lithium disilicate glass-ceramics[J]. Journal of the Chinese Ceramic Society, 2019, 47(2): 255-259 (in Chinese).
[15] 郑欣.二硅酸锂微晶玻璃的制备及力学性能研究[D].哈尔滨:哈尔滨工业大学,2007.
ZHENG X. Preparation and mechanical properties of lithium disilicate glass-ceramics[D]. Harbin: Harbin Institute of Technology, 2007 (in Chinese).
[16] ELLISON A, KICZENSKI T. Alkali-free glass compositions having high thermal and chemical stability: US8598056 B2[P]. 2013-10-03.
[17] CLARK D E. Chemical stability of glass and glass-ceramics[J]. Trans Am Nucl Soc (United States), 1980, 35.
[18] ZHANG Y Q, WANG M T, LI M, et al. The effect of Sm₂O₃ on the chemical stability of borosilicate glass and glass ceramics[J]. Journal of Wuhan University of Technology-Mater Sci Ed, 2014, 29(4): 692-697.
[19] HARTMANN P, REICH M L, LEICHTWEISS T, et al. Transport properties and chemical stability of lisicon-based glass ceramics in contact with lithium[J]. Electrochemical Society, 2012.