无机材料学报 ›› 2022, Vol. 37 ›› Issue (12): 1351-1357.DOI: 10.15541/jim20220179

• 研究快报 • 上一篇    下一篇

粉末烧结法制备α-堇青石基玻璃陶瓷的析晶动力学和性能

孙扬善1,3(), 杨治华2, 蔡德龙2, 张正义1,3, 柳琪1,3, 房树清1,3, 冯良1,3, 石丽芬1,3, 王友乐1,3, 贾德昌2   

  1. 1.中建材玻璃新材料研究院集团有限公司, 浮法玻璃新技术国家重点实验室,, 蚌埠 233000
    2.哈尔滨工业大学, 结构功能一体化材料及其绿色制造技术工信部重点实验室, 哈尔滨 150001
    3.安徽省硅基材料实验室, 蚌埠 233000
  • 收稿日期:2022-03-30 修回日期:2022-05-25 出版日期:2022-12-20 网络出版日期:2022-06-03
  • 作者简介:孙扬善(1989-), 男, 高级工程师. E-mail: ashan19890608@163.com

Crystallization Kinetics, Properties of α-cordierite Based Glass-ceramics Prepared by Glass Powder Sintering

SUN Yangshan1,3(), YANG Zhihua2, CAI Delong2, ZHANG Zhengyi1,3, LIU Qi1,3, FANG Shuqing1,3, FENG Liang1,3, SHI Lifen1,3, WANG Youle1,3, JIA Dechang2   

  1. 1. State Key Laboratory of Advanced Technology for Float Glass, CNBM Research Institute for Advanced Glass Materials Group Co., Ltd, Bengbu 233000, China
    2. Key Laboratory of Advanced Structrual-Functional Integration Materials & Green Manufacturing Technology, Harbin Institute of Technology, Harbin 150001, China
    3. Silica-based Materials Laboratory of Anhui Province, Bengbu 233000, China
  • Received:2022-03-30 Revised:2022-05-25 Published:2022-12-20 Online:2022-06-03
  • About author:SUN Yangshan (1989-), male, senior engineer. E-mail: ashan19890608@163.com
  • Supported by:
    Anhui Provincial Natural Science Foundation (Youth Project)(2008085QE248);Key Research and Development Projects of Anhui Province(202004a05020061);Key Research and Development Projects of Anhui Province(202004a05020036);The 6th China Association for Science and Technology “Young Talent Support Project”

摘要:

在堇青石化学计量组分和非堇青石化学计量组分中分别添加B2O3, 通过玻璃粉末烧结法制备玻璃陶瓷,并研究了玻璃陶瓷的性能, 包括非等温析晶动力学、热学、力学和介电性能。本研究使用非堇青石化学计量组分制备了α-堇青石基玻璃陶瓷, 并加入B2O3促进α-堇青石析出, 提高MgO-Al2O3-SiO2玻璃的结晶能力。玻璃成分中过量的MgO和SiO2不会影响玻璃的析晶能力, 但会影响析晶的类型; 增加B2O3含量可以制备低热膨胀系数的α-堇青石基玻璃陶瓷, 但会降低玻璃陶瓷的软化点。此外, 增加B2O3含量还可以提高玻璃陶瓷的致密性和强度。α-堇青石基玻璃陶瓷的最大抗弯强度、弹性模量、断裂韧性和体积密度分别为(42.4±3.0) MPa、(34.0±2.9) GPa、(0.7±0.15) MPa·m1/2和1.53 g/cm3。制备的α-堇青石基玻璃陶瓷表现出良好的介电性能(介电常数低至3.5), 热膨胀系数低至4.22×10-6 K-1

关键词: α-堇青石, 玻璃陶瓷, 粉末烧结, 析晶动力学, 力学性能, 介电性能

Abstract:

The resulting glass-ceramics were prepared by glass powder sintering using stoichiometric and non-stoichiometric cordierite components with addition of B2O3. Properties of the glass-ceramics, including the non- isothermal crystallization kinetics, thermal, mechanical and dielectric properties were investigated. The α-cordierite based glass-ceramics can be easily prepared by using non-stoichiometric cordierite components, and B2O3 addition can promote the precipitation of α-cordierite and improve the crystallization ability of the MgO-Al2O3-SiO2 glass. Moreover, rich MgO and SiO2 in the glass composition did not affect the crystallization ability of the glass, but affect the type of precipitated crystal phase. The increase of B2O3 addition can prepare α-cordierite based glass-ceramics with a low coefficient of thermal expansion (CTE), but it also lower its softening point. In addition, the increase of B2O3 addition can also improve the compactness and mechanical strength of the glass-ceramics. The maximum flexural strength, elastic moduli, fracture toughness and bulk density of α-cordierite based glass-ceramics are (42.4±3.0) MPa, (34.0±2.9) GPa, (0.7±0.15) MPa·m1/2, and 1.53 g/cm3, respectively. And the as-prepared α- cordierite based glass-ceramics show good dielectric properties (ɛ as low as 3.5) with a low CTE of 4.22 × 10-6 K-1.

Key words: α-cordierite, glass-ceramics, powder sintering, crystallization kinetics, mechanical property, dielectric property

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