Gradient porous bioactive ceramic coating material and preparation method thereof

A technology of bioactive ceramics and gradient porosity, which is applied in coating, metal material coating technology, tissue regeneration, etc., can solve the problems of further improvement and low similarity, and achieve the promotion of osseointegration and good biological performance Effect

Active Publication Date: 2021-12-03
CENT SOUTH UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] However, the surface of the above-mentioned coating material has a low structural similarity with bone tissue, and its performance in terms of biological properties, integration with bone tissue, and promotion of new bone formation still needs to be further improved.

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  • Gradient porous bioactive ceramic coating material and preparation method thereof
  • Gradient porous bioactive ceramic coating material and preparation method thereof
  • Gradient porous bioactive ceramic coating material and preparation method thereof

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Embodiment 1

[0049] A gradient porous bioactive ceramic coating material according to an embodiment of the present invention, its structural schematic diagram is as follows figure 1 As shown, it includes a titanium base 1 and a gradient porous bioactive ceramic coating on the surface of the titanium base 1 . The gradient porous bioactive ceramic coating includes an Ag barrier layer 2 , a hydroxyapatite / Ag composite transition layer 3 , and a hydroxyapatite bioceramic layer 4 in sequence from the inside to the outside. Wherein, the mass fraction of Ag in the hydroxyapatite / Ag composite transition layer 3 is 25%, and the mass fraction of HA (hydroxyapatite) is 75%; the thickness of the Ag barrier layer 2 is about 200 μm-240 μm, and the The thickness of the stone / Ag composite transition layer 3 is about 180 μm-200 μm. The hydroxyapatite bioceramic layer 4 has a porous structure, the average pore diameter of the hydroxyapatite bioceramic layer 4 is about 7.22±1.88 μm, and the thickness of the...

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Abstract

The invention discloses a gradient porous bioactive ceramic coating material and a preparation method thereof. The coating material comprises a titanium substrate and a gradient porous bioactive ceramic coating covering the surface of the titanium substrate, the gradient porous bioactive ceramic coating sequentially comprises from inside to outside: an Ag barrier layer, a hydroxyapatite / Ag composite transition layer and a hydroxyapatite biological ceramic layer, wherein the hydroxyapatite biological ceramic layer is of a porous structure. The hydroxyapatite biological ceramic layer in the gradient porous bioactive ceramic coating material has a porous structure, and the surface of the coating material is very similar to a host bone tissue in structure, so that the coating material has better biological performance; and the pores in the surface of the coating material are beneficial to protein absorption and osteoblast attachment, are also beneficial to ion exchange, degradation and HA deposition in a body fluid environment, and have a promoting effect on formation of new bones and good bony combination.

Description

technical field [0001] The invention relates to the technical field of bioactive ceramic materials, in particular to a gradient porous bioactive ceramic coating material and a preparation method thereof. Background technique [0002] Titanium (Ti) and its alloys have excellent biocompatibility, excellent biomechanical properties, good corrosion resistance, and excellent forming and processing properties, and have become the materials of choice for artificial joints. The bioceramic coating on the surface of the bone-implanted artificial joint stem should have good bioactivity and osteoinductive ability. The osteogenic performance and bioactivity of the coating can be further improved by adding a pore-forming agent and combined with laser cladding, and the artificial joint can be increased. Handle service life and stability. [0003] Hydroxyapatite (Ca 10 (PO 4 ) 6 (OH) 2 , HA) is a bioactive ceramic material, which is also the main inorganic component of bone, has excell...

Claims

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Application Information

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IPC IPC(8): A61L27/30A61L27/32A61L27/56A61L27/54A61L27/50A61L27/06C23C26/00C23C24/10
CPCA61L27/306A61L27/32A61L27/303A61L27/56A61L27/54A61L27/50A61L27/06C23C26/00C23C24/103A61L2430/02A61L2400/12A61L2300/112A61L2300/412A61L2300/606
Inventor 刘德福邓子鑫潘治贵米航彪
Owner CENT SOUTH UNIV
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