Transparent or transparent dyed lithium aluminium silicate glass ceramic material having adapted thermal expansion and use thereof

A technology of lithium aluminosilicate and glass ceramics, which is applied in solid heating fuel, thin material processing, household stoves/stoves, etc., can solve the problems of reducing the temperature of glass ceramic windows, and achieve the purpose of avoiding visual distortion, reducing stress, and improving effect of opacity

Active Publication Date: 2013-03-27
SCHOTT AG
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

As a result, the temperature experienced by the glass-ceramic window is reduced

Method used

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  • Transparent or transparent dyed lithium aluminium silicate glass ceramic material having adapted thermal expansion and use thereof
  • Transparent or transparent dyed lithium aluminium silicate glass ceramic material having adapted thermal expansion and use thereof
  • Transparent or transparent dyed lithium aluminium silicate glass ceramic material having adapted thermal expansion and use thereof

Examples

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Embodiment Construction

[0189] The invention is illustrated by the following examples.

[0190] For some examples, the composition and properties of the crystallizable starting glass for transparent glass-ceramics are shown in Table 1. Here, glasses 1 to 3 are glasses according to the invention, whereas glass 4 is a comparative glass outside the scope of the invention. Table 2 shows the composition and properties of the crystallizable starting glasses for transparent colored glass-ceramics. Here, glasses 5 to 11 are glasses according to the invention, whereas glass 12 is a comparative glass outside the scope of the invention. Due to the impurities typical in industrial mixtures of the raw materials used, the composition does not add up to exactly 100% by weight. Although not intentionally introduced into the composition, typical impurities are F, Cl, B, P, Rb, Cs, Hf or Sr, which are usually present in amounts below 0.05% by weight. They are usually introduced via the raw materials used for the re...

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Abstract

The invention relates to transparent or transparent dyed lithium aluminium silicate (LAS) glass ceramic material having an adapted thermal expansion, consisting of a glass ceramic material comprising high-quartz mixed crystals as the predominant crystalline phase, and a thermal expansion between room temperature and 700 DEG C from 1.0 to 2.5 10-6 / K, preferably from 1.3 to 1.8 10-6 / K.

Description

technical field [0001] The present invention relates to transparent or transparent colored lithium aluminosilicate (LAS) glass-ceramic materials having adapted thermal expansion and consisting of glass-ceramics comprising a high-temperature / β-quartz solid solution as the main crystalline phase, and to uses thereof. Background technique [0002] It is well known that the Li 2 O-Al 2 o 3 -SiO 2 The glass in the system is transformed into a glass-ceramic product having β-quartz solid solution and / or keatite solid solution as the main crystal phase. [0003] The main property of these glass-ceramic articles with β-quartz solid solution as the main crystalline phase is the ability to manufacture materials with a very low coefficient of thermal expansion in the defined temperature range. Usually, the thermal expansion characteristics are set so that the material has zero thermal expansion, usually 0±0.3·10 in the range of its service temperature -6 / K. Thus, for example, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C10/00
CPCC03C10/0045C03C10/0027F24B13/004F24C15/10C03C10/0054Y10T428/24926Y10T428/265C03C14/00C03C17/04
Inventor 弗里德里希·西贝斯艾维林·魏斯克劳斯·舍恩贝格尔
Owner SCHOTT AG
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