东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2012, Vol. 33 ›› Issue (8): 1171-1173.DOI: -

• 论著 • 上一篇    下一篇

B_2O_3-TiO_2掺杂堇青石微晶玻璃制备及其晶化行为

曹颖;印万忠;王国胜;徐昱峰;   

  1. 东北大学资源与土木工程学院;沈阳化工大学化学工程学院;
  • 收稿日期:2013-06-19 修回日期:2013-06-19 发布日期:2013-04-04
  • 通讯作者: -
  • 作者简介:-
  • 基金资助:
    国家自然科学基金资助项目(51074037)

Preparation of B2O3-TiO2 doped cordierite glass-ceramics and its crystallization behavior

Cao, Ying (1); Yin, Wan-Zhong (1); Wang, Guo-Sheng (2); Xu, Yu-Feng (2)   

  1. (1) School of Resources and Civil Engineering, Northeastern University, Shenyang 110819, China; (2) School of Chemical Engineering, Shenyang University of Chemical Technology, Shenyang 110142, China
  • Received:2013-06-19 Revised:2013-06-19 Published:2013-04-04
  • Contact: Yin, W.-Z.
  • About author:-
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摘要： 按照堇青石化学计量配比,掺杂B2O3-TiO2,采用溶胶-凝胶法配合回流制备了以α-堇青石为主晶相的微晶玻璃.利用差热分析、X射线衍射、扫描电镜等测试手段,对该玻璃样品的晶化过程进行了试验观察,探讨了B2O3-TiO2在堇青石基微晶玻璃晶化过程中的作用.结果表明:样品在从无定形态到堇青石微晶玻璃的转变过程中,过渡相为镁铝尖晶石和β-石英固溶体,该结果说明B2O3起到了抑制μ-堇青石形成的作用.另外,TiO2作为形核剂,通过先在玻璃相中形成富钛小液滴来诱导非均匀成核,从而促进α-堇青石析晶.断面扫描电镜图像显示所得微晶玻璃为整体析晶.

关键词: 堇青石, 微晶玻璃, 溶胶-凝胶, B2O3TiO2, 晶化

Abstract: Using B2O3-TiO2 as an additive, cordierite glass-ceramics with stoichiometric composition were prepared by the sol-gel technique. The sample crystallization was characterized by differential thermal analysis, X-ray diffraction and scanning electron microscope. Effect of doping B2O3-TiO2 on crystallization was investigated. It is shown that α-cordierite is obtained from amorphous compound, with metastable phases of Al-Mg spinel and β-quartz solid solution produced, indicating that the B2O3 retards the crystallization of μ-cordierite. The Ti-rich liquid drops inducing non-uniform nucleation are formed in the glass phase by doping TiO2, which promotes the bulk crystallization of α-cordierite.

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