High-hardness transparent microcrystal glass with crystal oriented array structure and preparation method of high-hardness transparent microcrystal glass

A technology of crystal orientation and glass-ceramics, which is applied in the field of glass materials, can solve the problems of high cost, limited improvement of the surface hardness of transparent glass-ceramics, and inability to achieve synergistic resistance to external force scratches, so as to promote nucleation and crystallization , good hardness and wear resistance

Active Publication Date: 2019-05-10
JINGDEZHEN CERAMIC INSTITUTE
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  • Abstract
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Problems solved by technology

However, this type of method can only be realized in a few glass systems at present, not only requires a very strict heat treatment regime, but also takes tens of hours for nucleation and crystallization heat treatment, resulting in high cost of implementation
In additi

Method used

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  • High-hardness transparent microcrystal glass with crystal oriented array structure and preparation method of high-hardness transparent microcrystal glass
  • High-hardness transparent microcrystal glass with crystal oriented array structure and preparation method of high-hardness transparent microcrystal glass
  • High-hardness transparent microcrystal glass with crystal oriented array structure and preparation method of high-hardness transparent microcrystal glass

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Experimental program
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Example Embodiment

[0029] Embodiment one:

[0030] 1. In this embodiment, a kind of high-hardness transparent glass-ceramic with crystal orientation arrangement structure is made of MgO-B 2 o 3 -Al 2 o 3 -SiO 2 The basic glass of the system, and the cordierite crystal layer with a vertically aligned structure on its surface. Wherein, the base glass consists of 10 parts of MgO, B 2 o 3 5 parts, Al 2 o 3 31 parts, SiO 2 49 copies, GeO 2 1.5 parts, TiO 2 1 part, ZrO 2 1 copy, P 2 o 5 1.5 parts; the cordierite crystal layer is made of GeO by heat treatment 2 In situ growth of seed crystals induced on the base glass surface, GeO 2 The seed crystal consists of amorphous GeO 2 GeO made by mixing glass powder and water 2 The seed crystal suspension is coated on the surface of the base glass and introduced, according to the mass ratio of GeO 2 Glass powder: water=1:220.

[0031] 2. The preparation method of the high-hardness transparent glass-ceramic with crystal alignment structure in...

Example Embodiment

[0039] Embodiment two:

[0040] 1. In this embodiment, a kind of high-hardness transparent glass-ceramic with crystal orientation arrangement structure is made of MgO-B 2 o 3 -Al 2 o 3 -SiO 2 The basic glass of the system, and the cordierite crystal layer with a vertically aligned structure on its surface. Wherein, the base glass consists of 12 parts of MgO, B 2 o 3 7 copies, Al 2 o 3 28 parts, SiO 2 47 copies, GeO 2 3 parts, TiO 2 1 part, ZrO 2 1 part; the cordierite crystal layer is made of GeO by heat treatment 2 In situ growth of seed crystals induced on the base glass surface, GeO 2 The seed crystal consists of amorphous GeO 2 GeO made by mixing glass powder and water 2 The seed crystal suspension is coated on the surface of the base glass and introduced, according to the mass ratio of GeO 2 Glass powder: water=1:270.

[0041] 2. In this embodiment, a method for preparing a high-hardness transparent glass-ceramic having a crystal alignment structure, the ...

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Abstract

The invention discloses high-hardness transparent microcrystal glass with a crystal oriented array structure and a preparation method of the high-hardness transparent microcrystal glass with the crystal oriented array structure. The high-hardness transparent microcrystal glass comprises base glass of an MgO-B2O3-Al2O3-SiO2 system and a cordierite crystal layer with the crystal oriented array structure, and the cordierite crystal layer with the crystal oriented array structure is formed on the surface of the base glass. By formula adjustment and process optimization, hardness, wear resistance and optical performances of the microcrystal glass are substantially improved by combination of the base glass of the MgO-B2O3-Al2O3-SiO2 system and the cordierite crystal layer, with the crystal oriented array structure, in in-situ growth on the surface of the base glass. The technical scheme is simple and feasible, extensive application to fields of electronic glass, screen glass, optical windowsand the like of wearable devices with the demand of high wear resistance, and a significant promoting effect on technical development and application in fields of optical materials and electronic glass materials is achieved.

Description

technical field [0001] The invention relates to the technical field of glass materials, in particular to a high-hardness transparent glass-ceramic suitable for the fields of electronic glass for wearable devices, screen glass, optical windows and the like with high wear resistance requirements and a preparation method thereof. Background technique [0002] Silicate glass is mainly composed of SiO 2 Such oxides are formed after high-temperature melting and cooling. Because the glass structure has the characteristics of short-range order and long-range disorder, it is impossible to arrange the internal atoms in a close-packed manner. It is much looser, which results in glass materials having a lower surface hardness and relatively poor wear resistance than crystalline or ceramic materials of the same chemical composition. In addition, from the perspective of microstructure, silicate glass is based on silicon-oxygen tetrahedron [SiO 4 ] is the three-dimensional network connec...

Claims

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Application Information

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IPC IPC(8): C03C10/08C03C17/04
Inventor 肖卓豪董晓烽何勇涛孔令兵罗文艳
Owner JINGDEZHEN CERAMIC INSTITUTE
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