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R2O-SiO2 glass containing alumina and zirconia

A technology of zirconia and alumina, which is applied in the field of alkali silica glass, can solve the problems of weak mechanical properties, inability to obtain wear resistance, scratch resistance and impact resistance, bending toughness, and high glass brittleness, etc., to achieve excellent mechanical properties, Realize the effect of reorganization and reconstruction and good toughness

Active Publication Date: 2018-01-05
BEIJING UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Because CaO is still an alkaline oxide, the glass is relatively brittle, has low hardness, and its mechanical properties are relatively weak, so it cannot achieve relatively excellent wear resistance, scratch resistance, impact resistance, and bending toughness.

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  • R2O-SiO2 glass containing alumina and zirconia
  • R2O-SiO2 glass containing alumina and zirconia

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Embodiment Construction

[0016] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are part of the present invention Examples, not all examples. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0017] The present invention is described in further detail below:

[0018] The hardness and brittleness of glass seriously restrict the application and development of glass. At present, the widely used soda lime glass (Na 2 O-CaO-SiO 2 ) is relatively good in melting preparation, which can satisfy low melting temperature and long glass frit, but the physical and chemical ...

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Abstract

The invention discloses R2O-SiO2 glass containing alumina and zirconia, which is prepared from 45 to 80 percent of SiO2, 10 to 30 percent of R2O and 10 to 25 percent of ZrO2+Al2O3 according to mol percentage, wherein the molar ratio of ZrO2 to Al2O3 is 1:4, and the molar ratio of the R2O to the Al2O3+ZrO2 is 1.0 to 1.2. Since Al2O3 and the ZrO2 are introduced into the R2O-SiO2 glass, the rearrangement and reconstruction of a glass structure are effectively realized; by mean of the components and the proportion, the melting property, forming property and processing property of the glass are alltaken into account, and moreover, the glass disclosed by the invention has the advantages of relatively excellent mechanical properties, good toughness, impact resistance and scratch resistance.

Description

technical field [0001] The invention relates to the technical field of glass, in particular to an alkali silica glass containing alumina and zirconia. Background technique [0002] Soda silica glass (R 2 O-SiO 2 ) is the most basic binary glass system, R 2 O is an alkali metal oxide, which has good melting properties, but its chemical stability and mechanical strength are not good, so it becomes its Achilles heel, even if the composite alkali metal oxide (Li 2 O, Na 2 O, K 2 O) performance adjustment and improvement, its performance improvement is also relatively limited. If it is expected to form a relatively stable glass, it is generally necessary to meet and control R 2 O / SiO 2 The molar ratio of <0.5, then the overall requirement of the total amount of alkali metal oxides in the total amount of alkali silica glass (R 2 O = Li 2 O, Na 2 O, K 2 O) is less than 33mol%, just can meet the premise technical requirement of becoming glass. [0003] Soda silica gla...

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Application Information

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IPC IPC(8): C03C3/083
Inventor 田英良杨宝瑛孙诗兵吕锋李辉
Owner BEIJING UNIV OF TECH