Nd-YAG laser cladding method for preparing thickness adjustable biological ceramic composite coating adopting bone-like structure

A composite coating and laser cladding technology, applied in the field of bioceramic materials, to achieve the effects of improved stability, excellent biocompatibility, and high bonding strength

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

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Problems solved by technology

[0005] The purpose of the present invention is to aim at existing CO 2 Insufficiency of laser cladding to prepare bioceramic coating, provide a kind of rare earth component with CaCO 3 Nd-YAG laser cladding preparation method of composite bioceramic coating with bone-like tissue structure made of mixed powder as raw material with adjustable coating thickness

Method used

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  • Nd-YAG laser cladding method for preparing thickness adjustable biological ceramic composite coating adopting bone-like structure
  • Nd-YAG laser cladding method for preparing thickness adjustable biological ceramic composite coating adopting bone-like structure
  • Nd-YAG laser cladding method for preparing thickness adjustable biological ceramic composite coating adopting bone-like structure

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Embodiment 1

[0024] In the first step, Y 2 o 3 , with CaCO 3 Weigh it according to the ratio (weight percentage) of 1:72:27, put it in a container, mix it evenly, let it stand for dehydration, then mix it again, stand it for enhanced dehydration, put it into a mixer and mix it evenly, and get an average particle size of 50-100μm , a mixed powder with a water content of 6.2%;

[0025] In the second step, the mixed powder obtained in the first step is stacked on the surface of the Ti6Al4V alloy substrate (using other titanium alloy substrates has the same effect), with a thickness of 0.5mm;

[0026]The third step is to use the iLS-YC-30A YAG laser, under the process parameters of argon as the shielding gas, 3mm spot diameter, 900W output power, and 2mm / s scan rate, use Nd-YAG high-energy laser beam to mix the powder and The metal substrate is processed by laser cladding process to form Nd-YAG laser cladding bioceramic composite coating on the surface of titanium alloy. After testing, t...

Embodiment 2

[0028] The first step, with embodiment 1.

[0029] In the second step, the mixed powder obtained in the first step is stacked on the surface of the Ti6Al4V alloy substrate (using other titanium alloy substrates has the same effect), with a thickness of 1.0mm;

[0030] The third step is to use the iLS-YC-30A YAG laser, under the process parameters of argon as the shielding gas, 3mm spot diameter, 1000W output power, and 2mm / s scan rate, use Nd-YAG high-energy laser beam to mix powder and The metal substrate is processed by laser cladding process to form Nd-YAG laser cladding bioceramic composite coating on the surface of titanium alloy. After testing, the obtained coating has uniform crystal grains, good crystallization performance, and has the characteristics of irregular grains and fibrous tissue of natural bone tissue. The thickness of the coating is 1.0mm, and it is a chemical metallurgical bond with the metal substrate. The bonding strength is 37Mpa. The phase composition...

Embodiment 3

[0033] In the first step, Ce 2 o 3 , with CaCO 3 Weigh it according to the ratio (weight percentage) of 2:74:24, put it in a container, mix it evenly, let it stand for dehydration, then mix it again, stand it for enhanced dehydration, put it into a mixer and mix it evenly, and get an average particle size of 50-100μm , a mixed powder with a water content of 6.2%;

[0034] In the second step, the mixed powder obtained in the first step is stacked on the surface of the Ti6Al4V alloy substrate (using other titanium alloy substrates has the same effect), with a thickness of 1.5mm;

[0035] The third step is to use the iLS-YC-30A YAG laser, under the process parameters of argon gas as the shielding gas, 3mm spot diameter, 1000W output power, and 1mm / s scan rate, use Nd-YAG high-energy laser beam to mix powder and The metal substrate is processed by laser cladding process to form Nd-YAG laser cladding bioceramic composite coating on the surface of titanium alloy. After testing...

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Abstract

The invention discloses an Nd-YAG laser cladding method for preparing a thickness adjustable biological ceramic composite coating adopting a bone-like structure. The method includes the following steps: 1, proportionally mixing rare earth, CaHPO4.2H2O and CaCO3 to prepare composite powder; 2, piling the composite powder obtained in step 1 on the surface of a titanium alloy basal body to form a precast coating; 3, performing Nd-YAG laser cladding to the composite powder; so as to obtain the biological ceramic composite coating with high binding force. According to the invention, the rare earth added in raw material improves the stability of an HAP phase structure; the obtained coating is high in bonding strength when bonded with the metal basal body, and is bonded with chemical metal to solve the problem that the biological ceramic coating is easy to fall off; in addition, the raw material is low in price, convenient to purchase and easy to store; the preparing technology is simple, the implementation is easy, and the metal 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 method for Nd-YAG laser cladding a bone-like structure bioceramic composite coating with adjustable thickness. Background technique [0002] Hydroxyapatite (Ca 10 (PO 4 ) 6 (OH) 2 , HAP) Medical bioceramic is a biomaterial that is booming at home and abroad. 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 2 o 7 , β-TTCP) etc. Tricalcium phosphate and calcium pyrophosphate have good osteoinductive ability and are ideal biodegradable bioceramic materials. Their physiological functions such as osteogenic performance are ve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C24/10
Inventor 王迎春耿铁屈少敏王赞张映霞唐静静赵斌
Owner HENAN UNIVERSITY OF TECHNOLOGY
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