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Preparation method for titanium alloy surface composite oxidation biological ceramic film

A bioceramic film and surface composite technology, applied in the direction of surface reaction electrolytic coating, electrolytic coating, coating, etc., can solve the problems of thin anodic oxide film, unfavorable wound healing, tissue infection, etc., and achieve high controllability, Good for control and low cost

Active Publication Date: 2015-09-16
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The technical problem to be solved by the present invention is that the anodic oxidation film is thin, and the hardness is low; and the bonding layer of the micro-arc oxidation film has holes, and when the treated medical titanium alloy is implanted in the tissue, the matrix metal ions will flow from these The hole is released, causing tissue infection, which is not conducive to wound healing

Method used

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  • Preparation method for titanium alloy surface composite oxidation biological ceramic film
  • Preparation method for titanium alloy surface composite oxidation biological ceramic film
  • Preparation method for titanium alloy surface composite oxidation biological ceramic film

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0033] The method described in this embodiment is used to prepare a stepped bioceramic membrane layer, such as figure 1 As shown, it specifically includes the following steps:

[0034] (1) Pretreatment: Cut the titanium alloy TC4 into a cylindrical titanium material, drill holes above the sample, and polish the surface of the titanium alloy until there are no scratches on the surface of the sample, and then perform degreasing, alkali cleaning and degreasing. Ionic water washing, natural drying;

[0035] (2) Anodic oxidation: Hang the pretreated sample as the anode in the electrolyte, and the stainless steel electrolytic cell as the cathode, carry out anodic oxidation, wash and dry for later use; the power supply parameters are set as: forward voltage 10V, forward voltage The duty cycle is 10%, the frequency is 100Hz, the number of positive and negative pulses is 1, and the oxidation time is 10; the electrolyte formula is: the concentration of phosphoric acid is 15g / L.

[003...

Embodiment 2

[0041] The method described in this embodiment is used to prepare a stepped bioceramic membrane layer, such as figure 1 As shown, it specifically includes the following steps:

[0042] (1) Pretreatment: Cut the titanium alloy TC4 into a cylindrical titanium material, drill holes above the sample, and polish the surface of the titanium alloy until there are no obvious scratches on the surface of the sample, and then perform degreasing, alkali cleaning and Wash with deionized water and dry naturally;`

[0043] (2) Anodic oxidation: Hang the pretreated sample as the anode in the electrolyte, and the stainless steel electrolytic cell as the cathode for anodic oxidation; the power supply parameters are set as: forward voltage 60V, forward duty cycle 30% , the frequency is 500Hz, the number of positive and negative pulses is 3, and the oxidation time is 50min; the electrolyte formula is: the concentration of sulfuric acid is 300g / L.

[0044] (3) Micro-arc oxidation: Replace the el...

Embodiment 3

[0049] The method described in this embodiment is used to prepare a stepped bioceramic membrane layer, such as figure 1 As shown, it specifically includes the following steps:

[0050] (1) Pretreatment: Cut the titanium alloy TC4 into a cylindrical titanium material, drill holes above the sample, and polish the surface of the titanium alloy until there are no obvious scratches on the surface of the sample, and then perform degreasing, alkali cleaning and Wash with deionized water and dry naturally;`

[0051] (2) Anodic oxidation: hang the pretreated sample as the anode in the electrolyte, and the stainless steel electrolytic cell as the cathode for anodic oxidation; the power supply parameters are set as: forward voltage 120V, forward duty cycle 60% , the frequency is 800Hz, the number of positive and negative pulses is 6, and the oxidation time is 100min; the electrolyte formula is: the concentration of phosphoric acid is 50g / L.

[0052] (3) Micro-arc oxidation: Replace the...

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Abstract

The invention discloses a preparation method for a titanium alloy surface composite oxidation biological ceramic film and belongs to the orthopaedic metal material surface treatment technology field. An internal compact layer is prepared through an anodic oxidation method, a surface porous biological ceramic film layer is prepared based on an anodic oxidation membrane layer directly through a micro-arc oxidation method, finally, long-time oxidation is carried out in a low voltage or a small current based on the micro-arc oxidation film layer through an anodic oxidation method, thus a combination layer of the film layer is thick, pores in a compact layer are few, and the holes in a rough layer are communicated with each other. In the prepared composite oxidation biological ceramic film, the inner layer is a combination layer which has a compact structure, the interface layer is a compact layer which has a compact structure and has a lot of tiny pores with uniform pore size distribution, and the outer layer is a porous and loose layer which has a rough and porous surface and has good hydrophily. The defects of thin thickness, low hardness and the like of an anode oxide film are overcome, and the problem of single color of a micro-arc oxidation film layer is solved.

Description

technical field [0001] The invention relates to a method for preparing a composite oxidation bioceramic film on the surface of a titanium alloy, belonging to the technical field of surface treatment of orthopedic metal materials. Background technique [0002] After the bone replacement material is implanted in the body, the ideal combination method is that the bone replacement material and bone tissue are combined in the form of bone bonding, so that the functional continuity between the implant and the bone is presented through the continuity of the interface structure, and The interface bonding strength can reach or even exceed the bonding strength of the bone itself and the implant itself. The bone bonding process includes mechanical fit and chemical bonding, and only biologically active materials can form this bone bond. Because the structure and properties of medical metal materials are very different from those of bone tissue, they cannot be chemically bonded with bon...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/26
Inventor 严继康倪尔鑫唐婉霞段志操甘国友易健宏
Owner KUNMING UNIV OF SCI & TECH