ZrO2 toughened bioactive glass-ceramics of MgO-CaO-SiO2-P2O5-CaF2 system and preparation method thereof

A glass-ceramic and biologically active technology, applied in medical science, prostheses, coatings, etc., can solve problems such as poor mechanical properties, low content of alkali metal oxides, material strength, and unsatisfactory mechanical processing performance of biological activity , to achieve the effect of improved bending strength and good biological activity
CN101559237AInactive Publication Date: 2009-10-21SHANDONG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANDONG UNIV
Publication Date
2009-10-21
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a ZrO2 toughened bioactive glass-ceramics of MgO-CaO-SiO2-P2O5-CaF2 system. The glass comprises the components with mass fractions as follows: 25.7-34.1% of SiO2, 3.4-4.6% of MgO, 33.7-44.8% of CaO, 12.2-16.3% of P2O5, 0.1-5% of CaF2 and 0.1-20% of ZrO2; wherein, the ZrO2 is tetragonal zirconia. The prepared ZrO2 toughened bioactive glass-ceramics of MgO-CaO-SiO2-P2O5-CaF2 system witnesses obviously improved bending strength and fracture toughness; the elastic module index of the bioactive glass-ceramics can serve as materials for restoring or replacing artificial bones and the linear expansibility index thereof meets the requirement of similarity to the linear expansibility of titanium and titanium alloy coating materials. The bioactive glass-ceramics show good bioactivity in the immersion test in the simulated body fluid.
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Description

technical field

[0001] The present invention relates to a new type of bone repair substitute material, in particular to the use of ZrO 2 Toughened MgO-CaO-SiO 2 -P 2 o 5 -CaF 2 The invention relates to bioactive glass-ceramics and a preparation method thereof, belonging to the technical field of inorganic non-metallic materials. Background technique

[0002] Medical bioactive ceramic materials have good bioactivity and biocompatibility, and can form a good combination with human bone tissue after being implanted in the human body. However, the fatigue strength and fracture toughness are low, so it is difficult to use in bearing parts. In recent years, scholars at home and abroad have crystallized some biological glass materials and developed a series of bioactive glass-ceramics with excellent biological activity and mechanical properties. The development and utilization of bioactive glass-ceramics has injected new vitality into the development of bone repair alternativ...

Claims

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