Osteoid structure biological ceramic composite material with adjustable coating thickness

A coating thickness, bio-ceramic technology, applied in the direction of coating, etc., can solve the problem of not being able to obtain bio-ceramic coatings, achieve good market application prospects and commercial value, excellent biocompatibility, and convenient purchase

Inactive Publication Date: 2013-12-04
HENAN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The results of the study found that due to CO 2 Due to its own wavelength absorption characteristics, the CO 2 Laser cladding without adding rare earth components with CaCO 3 Bioceramic coatings cannot be obtained when the composition

Method used

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  • Osteoid structure biological ceramic composite material with adjustable coating thickness
  • Osteoid structure biological ceramic composite material with adjustable coating thickness
  • Osteoid structure biological ceramic composite material with adjustable coating thickness

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] By rare earth (Y 2 o 3 ) 1%; 72%; CaCO 3 27% by weight to prepare a composite material, mix it evenly and let it stand for dehydration to prepare a calcium salt composite powder with a particle size of 50-100 μm and a water content of 6.2%; then stack it on the Ti6Al4V alloy matrix with a thickness of 0.5mm ; Use Nd-YAG high-energy laser beams to carry out laser cladding process on cladding powder and metal substrate to form Nd-YAG laser cladding bioceramic composite coating on the surface of titanium alloy. The grains of the obtained coatings are fine, with features such as grain irregularities and fibrous structures of natural bone tissue. The thickness of the coating is 0.5mm, and the chemical metallurgical combination with the substrate has a bonding strength of 35Mpa. The phase composition of the coating is 37% HAP (volume percentage), and the remaining phases are TCP, β-Ca 2 P 2 o 7 , A mixture of calcium titanate.

[0017] If the thickness of the comp...

Embodiment 2

[0023] By rare earth (Y 2 o 3 ) 2%; 74%; CaCO 323% by weight to prepare a composite material, mix it evenly and let it stand for dehydration to prepare a calcium salt composite powder with a particle size of 50-100 μm and a water content of 6.2%; then stack it on the Ti6Al4V alloy matrix with a thickness of 0.5mm ; Use Nd-YAG high-energy laser beams to carry out laser cladding process on cladding powder and metal substrate to form Nd-YAG laser cladding bioceramic composite coating on the surface of titanium alloy. The grains of the obtained coatings are fine, with features such as grain irregularities and fibrous structures of natural bone tissue. The chemical metallurgical bond between the coating and the substrate, the bonding strength is 35Mpa, the phase composition of the coating is 48% HAP (volume percentage), and the rest phases are TCP and β-Ca 2 P 2 o 7 , and a mixture of calcium titanate.

[0024] If the thickness of the composite powder stacked on the Ti6Al...

Embodiment 3

[0030] By rare earth (Y 2 o 3 )1%; 70%; CaCO 3 29% by weight to prepare a composite material, mix it evenly and let it stand for dehydration to prepare a calcium salt composite powder with a particle size of 50-100 μm and a water content of 6.2%; then stack it on the Ti6Al4V alloy matrix with a thickness of 0.5mm ; Use Nd-YAG high-energy laser beams to carry out laser cladding process on cladding powder and metal substrate to form Nd-YAG laser cladding bioceramic composite coating on the surface of titanium alloy. The grains of the obtained coatings are fine, with features such as grain irregularities and fibrous structures of natural bone tissue. The chemical metallurgical bond between the coating and the substrate, the bonding strength is 28Mpa, the phase composition of the coating is 39% HAP (volume percentage), and the rest phases are TCP and β-Ca 2 P 2 o 7 , A mixture of calcium titanate.

[0031] If the thickness of the composite powder stacked on the Ti6Al4V...

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Abstract

The invention discloses an osteoid structure biological ceramic composite material with adjustable coating thickness, which is prepared from the following raw materials in weight percentage: 1-3% of rare earth, 70-74% of Ca.HPO4.2H2O, and 23-29% of CaCO3. The thickness of a coating prepared by adopting the osteoid structure biological ceramic composite material can achieve 3mm. The invention has the advantages as follows: the rare earth is added into the composite biological material, so that the stability of a HAP phase structure is improved. The coating prepared by adopting the composite material mainly contains hydroxyapatite with stable property, tertiary calcium phosphate, degradable calcium pyrophosphate and calcium titanate, so that the biocompatibility is excellent; the coating and a matrix are combined in a chemical metallurgic manner, so that the combination strength is high and the problem that the biological ceramic coating drops off during clinic application can be solved. Meanwhile, the raw materials are low in price, convenient to buy and easy to store, so that the osteoid structure biological ceramic composite material has favorable market application prospect and commercial value.

Description

technical field [0001] The invention relates to the field of bioceramic materials, in particular to a bone-like structure bioceramic composite material with adjustable coating thickness. Background technique [0002] In the field of human hard tissue repair, the purpose of implanting bone substitute materials into the human body is to compensate for bone defects and eventually be replaced by human new bone, so the implant must be bioactive and biodegradable. Calcium phosphate-based bioceramics have the same chemical composition as human natural bone, which is a research hotspot. The implant material made of HAP microcrystalline ceramics can be well combined with the natural bone of the human body, and is the best biocompatible bioceramic material that has been found. Calcium phosphate-based bioceramics are currently the most widely used in clinical applications, and their main products are HAP, tricalcium phosphate (Ca 3 (PO 4 ) 2 , TCP), calcium pyrophosphate (β-Ca 2 P...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61L27/32A61L27/30
Inventor 王迎春耿铁崔仲鸣朱登洁吴海宏唐静静赵斌
Owner HENAN UNIVERSITY OF TECHNOLOGY
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