Glass ceramics and substrate thereof

A technology of glass-ceramics and crystal phase, which is applied in the direction of electrical components, casings/cabinets/drawer parts, electrical equipment casings/cabinets/drawers, etc., which can solve the problem of poor thermal conductivity and strength, and difficult to protect materials , can not form a deep stress layer and other problems

Inactive Publication Date: 2018-04-17
CDGM OPTICAL GLASS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Glass-ceramics have higher mechanical properties and can increase the thermal conductivity of glass due to the formation of crystallites in the glass, but conventional glass-ceramics are not suitable for the above-mentioned protective materials due to poor thermal conductivity and strength
In addition, conventional crystallized glass has a high viscosity or high devitrification property

Method used

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  • Glass ceramics and substrate thereof
  • Glass ceramics and substrate thereof
  • Glass ceramics and substrate thereof

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Embodiment Construction

[0032] The glass-ceramic of the present invention is a material having a crystalline phase and a glass phase, which is distinguished from an amorphous solid. The crystal phase of glass ceramics can be identified by the peak angle appearing in the X-ray diffraction pattern of X-ray diffraction analysis and by TEMEDX. In the crystallized glass of the present invention, the crystal phase contains R 2 SiO 3 , R 2 Si 2 o 5 , R 2 TiO 3 , R 4 Ti 5 o 12 , R 3 PO 3 , RAlSi 2 o 6 , RAlSiO 4 o 10 , R 2 Al 2 Si 2 o 8 , R 4 Al 4 Si 5 o 18 One or more of R, quartz, and quartz solid solution, wherein R is one or more of Li, Na, and K.

[0033] Among them, the above Li 2 Si 2 o 5 The crystal phase is lithium disilicate crystal phase, which is based on [Si 2 o 5 ] The orthorhombic crystal of the tetrahedral array, the shape of the crystal is flat or plate-like. In the interior of the glass-ceramic, the lithium disilicate crystal phase is an interlocking microstructu...

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Abstract

The invention provides glass ceramics and a substrate thereof. The glass ceramics have high heat conductivity and bent resistance. The glass ceramics comprise the following components in percentages by weight: 60-80% of SiO2, 4-20% of Al2O3, 0-15% of Li2O, greater than 0 but less than or equal to 12% of Na2O, greater than 0 but less than or equal to 5% of ZrO2, 0-5% of P2O5, 0-6% of TiO2 and greater than 0 but less than 0.35 of ZrO2/Li2O. The heat conductivity of the glass ceramics at the room temperature is 2 w/m.k or above, the Vickers hardness of the toughened glass ceramics is 600 kgf/mm<2> or above, and the three-point bent strength is 450 Mpa or above. The glass ceramics or the substrate is suitable for protecting components of portable electronic equipment and optical equipment, andcan further be used for other decorations such as outer frame components of portable electronic equipment with the proper appearance of a glass material.

Description

technical field [0001] The present invention relates to a glass-ceramic and a substrate based on the glass-ceramic, in particular to a glass-ceramic with high thermal conductivity and high strength suitable for protective components such as portable electronic equipment or optical equipment. Glass-ceramics and substrates. Background technique [0002] For portable electronic devices such as smartphones, tablet PCs, and other optical devices, back covers are required to protect the internal electronics. For these protective materials for the back cover, especially for electronic devices that require wireless signals, they are required to have high thermal conductivity, different individual colors and high strength, and can be used in harsh environments, and Good processing performance. In the past, metal was usually used as the protective material for the back cover, but the metal back cover would seriously affect the reception of the signal, so it could only be designed in...

Claims

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Application Information

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IPC IPC(8): C03C10/14C03C10/04C03C21/00C03B32/02H05K5/02
CPCH05K5/0217C03B32/02C03C10/0027C03C21/002C03C3/097C03C3/095C03C3/093
Inventor 原保平于天来陈雪梅
Owner CDGM OPTICAL GLASS
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