Cordierite-based nanometer glass-ceramic and preparation method thereof

A technology of nano-crystallite and cordierite, which is applied in the field of cordierite-based nano-glass-ceramics and its preparation, can solve the problems of lack of mechanical properties of cordierite-based glass-ceramics, and achieve high mechanical properties

Active Publication Date: 2015-04-08
HAINAN UNIVERSITY
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  • Claims
  • Application Information

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  • Cordierite-based nanometer glass-ceramic and preparation method thereof
  • Cordierite-based nanometer glass-ceramic and preparation method thereof
  • Cordierite-based nanometer glass-ceramic and preparation method thereof

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preparation example Construction

[0065] The invention provides a preparation method of cordierite-based nano glass ceramics, comprising the following steps:

[0066] Main component raw materials including silicon source, magnesium source and aluminum source, crystal nucleating agent raw materials including titanium source, zirconium source and phosphorus source, adjustment material raw materials including calcium source, sodium source and potassium source, and auxiliary materials including boron source The flux raw material is melted to obtain the basic glass;

[0067] The base glass is subjected to nucleation treatment and crystallization treatment to obtain cordierite-based nano glass ceramics.

[0068] The present invention will include main component raw materials of silicon source, magnesium source and aluminum source, crystal nucleating agent raw materials including titanium source, zirconium source and phosphorus source, regulator raw materials including calcium source, sodium source and potassium sour...

Embodiment 1

[0083] 24wt% MgO, 22wt% Al 2 o 3 , 54wt% SiO 2 , 2wt% B 2 o 3 , 2wt% ZrO 2 , 3wt% TiO 2 , 0.16wt% CaO, 0.04wt% K 2 O and 0.21 wt% Na 2 O mix, grind, stir, obtain compound;

[0084] The obtained mixture is placed in a crucible, melted at 1580°C for 4 hours, and the obtained glass melt is poured into a mold to form a basic glass;

[0085] The obtained base glass is subjected to thermal analysis (DTA) to obtain the transition temperature and crystallization temperature of the base glass;

[0086] According to the DTA test results, the obtained base glass was subjected to nucleation treatment at 600° C. for 4 hours and crystallization treatment at 1100° C. for 2 hours to obtain cordierite-based nano-glass ceramics.

[0087] The present invention carries out X-ray diffraction (XRD) analysis to the obtained cordierite-based nano-glass ceramics, and the results are as follows: figure 2 as shown, figure 2 The XRD spectrum of the cordierite-based nano-glass-ceramic that is...

Embodiment 2

[0091] The cordierite nano glass-ceramic was prepared according to the technical scheme of Example 1, except that the crystallization temperature in this example was 1050°C.

[0092] The present invention carries out XRD analysis to the obtained cordierite nano-based glass-ceramics, the results are as follows figure 2 as shown, figure 2 The XRD spectrum of the cordierite-based nano-glass ceramics obtained in Examples 1 to 2 of the present invention and Comparative Examples 1 to 4 is obtained by figure 2 It can be seen that the crystal phase in the cordierite-based nanoglass-ceramics obtained in this embodiment is α-cordierite;

[0093] The present invention carries out scanning electron microscope (SEM) scanning analysis to the obtained cordierite-based nano glass-ceramics, and the result shows that the size of α-cordierite crystals in the glass-ceramics obtained by the present invention is nanoscale;

[0094] The mechanical properties of the cordierite-based nano-glass-c...

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Abstract

The invention provides a cordierite-based nanometer glass-ceramic. The cordierite-based nanometer glass-ceramic comprises a main component, a nucleating agent, an adjustment object and a fluxing agent, wherein the main component comprises SiO2, MgO and Al2O3; the nucleating agent comprises one or a plurality of TiO2, ZrO2 and P2O5, and accounts for 2.0-20wt% of the main component; the adjustment object comprises one or a plurality of CaO, Na2O and K2O, and accounts for 0.1-1wt% of the main component; and the fluxing agent comprises B2O3, and accounts for 1.0-3.0wt% of the main component. The cordierite-based nanometer glass-ceramic provided by the invention has higher mechanical properties.

Description

technical field [0001] The invention relates to the technical field of glass ceramics, in particular to a cordierite-based nano glass ceramics and a preparation method thereof. Background technique [0002] Glass-ceramic is a kind of hard, dense and uniform composite material composed of crystal phase and glass phase, which is made of glass particles with proper composition after sintering and crystallization. As a new type of functional material and structural material, its optical, electrical, biological, chemical, magnetic and other properties have been widely used in the fields of microelectronics technology, biomedicine, national defense cutting-edge technology, machinery manufacturing and other fields. Glass-ceramics also has comprehensive properties of various types, low expansion, corrosion resistance, thermal shock resistance, high strength, low dielectric loss and photochemical processing. Therefore, it has shown broad application prospects since its advent. [00...

Claims

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Application Information

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IPC IPC(8): C03C10/14
CPCC03C10/0045
Inventor 李长久姜宏陈阔沈阳贾阳
Owner HAINAN UNIVERSITY
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