Strengthening-toughening glass ceramic and preparation method thereof

A glass-ceramic and toughening technology, applied in the field of strengthening and toughening glass-ceramic and its preparation, can solve the problems of poor toughening effect, difficulty in densification, and performance degradation.
CN103011602AInactive Publication Date: 2013-04-03FOURTH MILITARY MEDICAL UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
FOURTH MILITARY MEDICAL UNIVERSITY
Publication Date
2013-04-03
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention belongs to the field of all-ceramics materials for the dentistry, and discloses a strengthening-toughening glass ceramic and a preparation method thereof. The strengthening-toughening glass ceramic comprises the following components in percentage by mass: 96 to 99% of basic component, and 1.0 to 4.0% of toughening component, wherein the basic component comprises the following components in percentage by mass: 58 to 62% of SiO2, 28 to 30% of Li2CO3, 3.5 to 4.0% of K2CO3, 2.5 to 3.0% of Al2O3, 11.4 to 1.6% of CeO2, and 2.6 to 3.0% of P2O5, and the toughening component is ZrO2.
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Description

technical field

[0001] The invention belongs to the field of dental all-ceramic materials, and relates to a toughened glass ceramic and a preparation method thereof. Background technique

[0002] Over the past few decades, there has been a gradual shift towards metal-free materials for dental restorations. During this period, various new technologies and materials were gradually introduced, among which dental all-ceramic materials are favored by doctors and patients because of their excellent biocompatibility and excellent aesthetic properties. However, since the ceramic material is a polycrystalline material composed of ionic bonds and covalent bond grains, its ability to resist crack twinning and development is small, and it lacks the ability of plastic deformation like metal materials, which determines its fatal disadvantage is high brittleness, so it is greatly restricted in application. Only by improving the fracture toughness of ceramics, realizing the strengthening ...

Claims

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