Design and preparation method for novel calcium-magnesium-silicon multiphase bioactive ceramic, and use thereof

A composite ceramic, calcium magnesium silicon technology, used in medical science, prosthesis, coating, etc.

Inactive Publication Date: 2012-02-22
SICHUAN UNIV
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

However, most of the current research focuses on a single phase, and rarely involves the optimal design and preparation of multiphase composite ceramic components.

Method used

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  • Design and preparation method for novel calcium-magnesium-silicon multiphase bioactive ceramic, and use thereof
  • Design and preparation method for novel calcium-magnesium-silicon multiphase bioactive ceramic, and use thereof
  • Design and preparation method for novel calcium-magnesium-silicon multiphase bioactive ceramic, and use thereof

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[0051] specific implementation plan

[0052] The present invention will be further described in detail below in conjunction with the specific examples given by the inventor. It should be noted that the present invention is not limited to these embodiments, and those skilled in the art can add and replace technical features within the scope of the present invention, all of which belong to the protection scope of the present invention.

[0053]The preparation methods of all composite ceramics are as described above. Measure 145.8 ml of TEOS, mix it with 36.5 ml of secondary deionized water, adjust the pH value of the mixture to 3 with a nitric acid solution with a volume concentration of 1:3, and stir for 40 min at 60 °C in a constant temperature magnetic stirrer Fully hydrolyze TEOS to obtain a stable and uniform transparent solution 1.

[0054] Weigh 143.52 grams of Ca(NO 3 ) 2 .4H 2 O, 38.85 g Mg(NO 3 ) 2 .6H 2 O, and it was completely dissolved in 100 ml of secondary...

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Abstract

The present invention relates to a design and preparation method for a novel calcium-magnesium-silicon multiphase bioactive ceramic, and a use thereof. According to the present invention, chemical compositions of three novel calcium-magnesium-silicon multiphase bioactive ceramics are firstly designed based on preliminary experimental results and theoretical analysis of phase diagrams; then tetraethoxysilane, water, magnesium nitrate hexahydrate and calcium nitrate tetrahydrate are adopted as raw materials, a sol-gel method is adopted for synthesis of three novel calcium-magnesium-silicon multiphase bioactive ceramic powders; the powders are subjected to dry-pressing and forming to obtain a material bisque; the bisque is subjected to sintering for 2 hours at a temperature of 1300-1350 DEG C to obtain a compact ceramic block body. According to the present invention, the multiphase ceramic MC2 is prepared by the method provided by the present invention, wherein the thermal expansion coefficient of the multiphase ceramic MC2 matches with titanium alloy TC4; because the intrinsic stress between the metal and the ceramic is reduced, the metal-ceramic bonding strength can be improved when the multiphase ceramic MC2 is adopted as the titanium-based bioactive coating; the ceramic has good mechanical property, good biological activity and good osteoblast compatibility; the novel calcium-magnesium-silicon multiphase ceramic MC2 is a potential bioactive ceramic material, and can be used in the surface modification fields of titanium implants in orthopedics, dentistry or plastic surgery, and human body hard tissue repairing and implanting materials; the method provided by the present invention has characteristics of simple process, easily-controlled components and conditions, and is easy to popularize.

Description

technical field [0001] The invention relates to a design, preparation method and application of a novel calcium-magnesium-silicon composite bioactive ceramic, belonging to the field of biological materials. Background technique [0002] Bone injuries or large bone defects due to trauma, inflammation, osteoporosis, tumors, and congenital deformities require a large number of bone repair materials for clinical healing and repair. At present, the research and clinical application of plasma spraying titanium alloy-based hydroxyapatite coating composite materials is the most extensive [J Mater Sci 2001, 36:5253-5263; J Mater Sci: Mater Med 2000, 11:183-190] . However, due to the low thermal decomposition temperature of HA, the coefficient of thermal expansion (CTE) with the titanium alloy TC4 substrate (TC4: 10.8×10 -6 o C -1 ;HA: 13.7×10 -6 o C -1 ) does not match, resulting in large intrinsic stress at the interface and low metal-ceramic bonding strength, and the coating i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61L27/10A61L27/30C04B35/622
Inventor 陈显春尹光福黄忠兵廖晓明姚亚东
Owner SICHUAN UNIV
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