Novel pretreatment method for anodic oxidation process

An anodic oxidation and pretreatment technology, which is applied in the field of surface pretreatment before anodic oxidation of titanium and titanium alloys, can solve the problems of reducing the interface bonding strength between the substrate and the film layer, failing to reach product roughness, and small surface roughness. , to achieve the effect of reducing secondary interface pollution, improving interface quality, and eliminating interface pollution

Inactive Publication Date: 2018-08-24
北京理贝尔生物工程研究所有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] 2) Reduce the interface bonding strength between the substrate and the film layer
[0012] 3) Influence the stress field at the film/substrate interface, resulting in local film shedding
However, due

Method used

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  • Novel pretreatment method for anodic oxidation process
  • Novel pretreatment method for anodic oxidation process
  • Novel pretreatment method for anodic oxidation process

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specific Embodiment 1

[0051] This embodiment discloses a process for anodic oxidation pretreatment, the general steps are as follows:

[0052] 1) Degrease and degrease the surface of the test piece substrate to be anodized;

[0053] 2) Roughen the test piece with dry ice blasting;

[0054] 3) Perform specific solution activation treatment on the test piece;

[0055] 4) Carry out specific anodizing treatment on the test piece.

[0056] Dry blasting roughening leads to the attachment and embedding of residual abrasive fragments on the surface of the substrate, resulting in interface contamination. In order to understand the purification and roughening effect of dry ice particle blasting on the test piece, this embodiment uses the traditional dry sandblasting method for comparison.

[0057] The general steps of traditional method processing are as follows:

[0058] 1) Degrease and degrease the surface of the test piece substrate to be anodized;

[0059] 2) Perform dry sandblasting roughening on t...

specific Embodiment 2

[0075] This embodiment discloses a process for anodic oxidation pretreatment, the general steps are as follows:

[0076] 1) Degrease and degrease the surface of the test piece substrate to be anodized;

[0077] 2) Roughen the test piece with dry ice blasting;

[0078] 3) Supersonic flame spraying treatment is carried out on the test piece.

[0079] Dry blasting roughening leads to the attachment and embedding of residual abrasive fragments on the surface of the substrate, resulting in interface contamination. In order to understand the purification and roughening effect of dry ice particle blasting on the test piece, this embodiment uses the traditional dry sandblasting method for comparison.

[0080] The general steps of the traditional dry sandblasting method are as follows:

[0081] 1) Degrease and degrease the surface of the test piece substrate to be anodized;

[0082] 2) Perform dry sandblasting on the test piece;

[0083] 3) Supersonic flame spraying treatment is c...

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Abstract

The invention provides a novel anodic oxidation pretreatment method, and relates to treatment methods for biomedical materials, in particular to surface pretreatment before anodic oxidation for titanium and titanium alloy preparation. The novel pretreatment method comprises the step that carbon dioxide ice particle jet treatment is conducted on the surface of a matrix, specifically, (1-1) carbon dioxide ice particles are treated by changing the size of the carbon dioxide ice particles or by changing both the size and shape of the carbon dioxide ice particles, and (1-2) the carbon dioxide ice particles are sprayed onto the surface of the matrix, so that the surface of the matrix is purified and coarsened. According to the novel pretreatment method, an existing carbon dioxide jet cleaning process is improved, an existing sand-blasting/centrifugal grinding process is replaced, and even the activation procedure can be omitted; by using the carbon dioxide ice particle jet cleaning techniquefor treatment, it is found that the quantity of broken abrasive particles left on the surface of the matrix is greatly reduced, and interface pollution is basically eliminated. Obvious broken abrasive particle residues on an interface are avoided while the surface of the matrix is purified and coarsened, and thus, secondary interface pollution is greatly reduced; and the quality and bonding strength of the film interface are improved, and the service life of the film interface is prolonged.

Description

technical field [0001] A novel anodic oxidation pretreatment method of the invention relates to a treatment method for biomedical materials, especially the surface pretreatment before anodic oxidation of titanium and titanium alloys. Background technique [0002] Titanium and titanium alloys are widely used as biomedical materials due to their good biocompatibility, especially in the field of implants. Higher biocompatibility stems from the fact that titanium and titanium alloys can spontaneously form a stable and protective oxide film during use. In addition, from a structural point of view, the density of titanium and titanium alloys is about 4.5 grams per cubic centimeter, which is only half that of steel. At the same time, it has high specific strength and high specific stiffness, so titanium and titanium alloys are currently the preferred materials for implant materials. [0003] For the processing of implant products in the current medical device field, in most cases...

Claims

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Application Information

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IPC IPC(8): C25D11/26
CPCC25D11/26
Inventor 于大千李慎波周群芳曹海波
Owner 北京理贝尔生物工程研究所有限公司
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