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Method for preparing fluorinated hydroxyapatite/ zirconium oxide (FHA/ZrO2) composite ceramic powder with good heat stability by hydrothermal synthesis

A composite ceramic and thermal stability technology, applied in the field of composite ceramic powder preparation, can solve the problems of uneven dispersion and mixing of components, poor thermal stability, etc., achieve uniform distribution of components, improve thermal stability, and improve thermal stability. performance effect

Inactive Publication Date: 2013-02-27
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The present invention aims to solve the problems of uneven dispersion and mixing of components in the composite ceramic powder and poor thermal stability and provide FHA / ZrO with good thermal stability. 2 Preparation method of hydrothermal synthesis of composite ceramic powder

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  • Method for preparing fluorinated hydroxyapatite/ zirconium oxide (FHA/ZrO2) composite ceramic powder with good heat stability by hydrothermal synthesis

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specific Embodiment approach 1

[0023] Specific embodiment one: the FHA / ZrO with good thermal stability of this embodiment 2 The hydrothermal synthesis preparation method of composite ceramic powder is realized according to the following steps:

[0024] 1. Yttrium stabilized hydrated zirconia powder Y 2 o 3 -Zr(OH) 4 Preparation: ZrOCl 2 ·8H 2 O and Y (NO 3 ) 3 ·8H 2 O is dissolved in distilled water to make a mixed solution, and ammonia water with a mass percentage concentration of 25% to 28% is added dropwise to the mixed solution, and after aging for 1.5 to 2 hours, the precipitate obtained after aging is centrifuged and washed to obtain yttrium Stabilized hydrated zirconia powder Y 2 o 3 -Zr(OH) 4 ; Wherein, ZrOCl in the mixed solution 2 The concentration is 0.19~0.21mol·L -1 ,, the molar ratio of Zr and Y in the mixed solution is 100:6;

[0025] 2. Hydrothermal synthesis of FHA / ZrO 2 Composite precursor powder

[0026] a. According to Ca / P molar ratio (1.67~1.68): 1, calcium nitrate aqueo...

specific Embodiment approach 2

[0037] Embodiment 2: This embodiment differs from Embodiment 1 in that: the centrifugation in step 1 is performed at 5000-8000 r / min for 3-5 minutes. Other steps and parameters are the same as those in Embodiment 1.

specific Embodiment approach 3

[0038] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that: the washing in step 1 uses distilled water for washing. Other steps and parameters are the same as those in Embodiment 1 or Embodiment 2.

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Abstract

The invention provides a method for preparing fluorinated hydroxyapatite / zirconium oxide (FHA / ZrO2) composite ceramic powder with good heat stability by hydrothermal synthesis, relates to a preparation method of the composite ceramic powder, and aims at solving the problems that all components in the composite ceramic powder are not evenly dispersed and mixed, and composite ceramic powder is poor in heat stability. The method comprises the steps of: 1, preparing yttrium-stabilized hydrous zirconium oxide powder Y2O3-Zr(OH)4; 2, preparing FHA / ZrO2 composite precursor powder by hydrothermal synthesis; and 3, carrying out heat treatment on the FHA / ZrO2 composite ceramic powder to obtain the FHA / ZrO2 composite ceramic powder with the phase composition including FHA and yttrium-stabilized tetragonal phase ZrO2. The method is applied to the field of preparing the composite ceramic powder by hydrothermal synthesis.

Description

technical field [0001] The invention relates to a preparation method of composite ceramic powder. The invention belongs to the field of inorganic biological materials. Background technique [0002] Hydroxyapatite (HA for short) is the main mineral component of human hard tissue bone and teeth. It has good biocompatibility and osteoinductive ability. Phosphorus and phosphorus will dissociate from the surface of the material, be absorbed by the body tissue, and form a chemical bond with the human bone tissue at the interface, thereby inducing the growth of the surrounding bone tissue, so it can be implanted into the human body as a hard tissue replacement material without excretion. Abnormal reaction. Therefore, it has become one of the most promising biological hard tissue replacement materials currently recognized. [0003] However, compared with natural bone tissue, pure HA implant materials have serious shortcomings in mechanical properties. HA has low flexural strengt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/63C04B35/48C04B35/447
Inventor 李文旭罗燕邹靖于德珍王福平
Owner HARBIN INST OF TECH
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