CN104674320B - A kind of titanium or the wear-resisting antibacterial bioactive ceramics membrane preparation method of titanium alloy surface and application - Google Patents

A kind of titanium or the wear-resisting antibacterial bioactive ceramics membrane preparation method of titanium alloy surface and application Download PDF

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CN104674320B
CN104674320B CN201310635158.1A CN201310635158A CN104674320B CN 104674320 B CN104674320 B CN 104674320B CN 201310635158 A CN201310635158 A CN 201310635158A CN 104674320 B CN104674320 B CN 104674320B
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titanium
wear
titanium alloy
bioactive ceramics
alloy surface
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CN104674320A (en
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张伟
张涛
赵宝红
张兵
王福会
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Shenyang Wanborui Technology Co Ltd
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Institute of Metal Research of CAS
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    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25DPROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D11/00Electrolytic coating by surface reaction, i.e. forming conversion layers
    • C25D11/02Anodisation
    • C25D11/26Anodisation of refractory metals or alloys based thereon
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61CDENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0012Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools characterised by the material or composition, e.g. ceramics, surface layer, metal alloy
    • A61C8/0013Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools characterised by the material or composition, e.g. ceramics, surface layer, metal alloy with a surface layer, coating
    • A61C8/0015Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools characterised by the material or composition, e.g. ceramics, surface layer, metal alloy with a surface layer, coating being a conversion layer, e.g. oxide layer
    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25DPROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D11/00Electrolytic coating by surface reaction, i.e. forming conversion layers
    • C25D11/02Anodisation
    • C25D11/024Anodisation under pulsed or modulated current or potential

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Abstract

The invention discloses a kind of preparation method and application of the wear-resisting antibacterial bioactive ceramics film of titanium or titanium alloy surface, belong to technical field of metal material surface treatment.The method prepares bottom passivating film first, then under the conditions of combination of ultrasound forward direction square wave pulse voltage, prepares the porous hard ceramic membrane containing Zn, Ca and P, then is carried out hydro-thermal process, finally obtains wear-resisting antibacterial bioactive ceramics film.The inventive method, with being firmly combined with matrix, shows preferable wear-resisting and decay resistance compared with the coating with bioactivity that other methods are obtained, and has fungistatic effect because of the introducing of Zn again while bioactivity is realized.Based on the tooth implant for oral cavity field produced by the present invention, the time of traditional tooth implant and synosteosis is shortened.

Description

A kind of titanium or the wear-resisting antibacterial bioactive ceramics membrane preparation method of titanium alloy surface and Using
Technical field
The present invention relates to field of metal surface treatment technology, and in particular to a kind of titanium or the wear-resisting antibacterial biology of titanium alloy surface Active ceramic membrane preparation method and application.
Background technology
In biomedical metallic material, titanium or titanium alloy have become tooth implant, bone wound by its excellent performance Injured labour product and joint prosthesis preferred material.Mainly there is advantages below relative to other medical metal materials:
(1)Compared with stainless steel, the elastic modelling quantity of titanium or titanium alloy with people's bone more closely, biocompatibility more preferably.
(2)The corrosion resisting property and anti-fatigue performance of titanium or titanium alloy are better than stainless steel and cobalt-base alloys, are organized after implantation Reaction is slight, and surface property is good.
(3)Titanium or titanium alloy influence smaller relative to other medical metal materials on bone growth, and in its tissue Without nickel composition, allergy is smaller.After testing, titanium alloy implant can be with longer-term persistence body, it is to avoid second operation.
Although titanium or titanium alloy have many advantages compared with other medical metal materials, there is also simultaneously following Weak point:
(1)Although titanium or titanium alloy have the elastic modelling quantity closest with bone, but still the significantly larger than springform of bone Amount, so easily causes mechanical performance on interface and mismatches.
(2)From composition, titanium or titanium alloy are entirely different with bone tissue, although they have good life and bone between Thing compatibility, bone regeneration around implant is formed without fibers encapsulation after implantation, but is a kind of Integrated implant of the embedding even property of machinery between them Rather than strong chemical synostosis.
(3)Titanium or titanium alloy have good corrosion resisting property because its surface can be formed one layer it is very firm and continuous Oxide passivation film.But because human body fluid is complicated, surface passivated membrane is implanted with possible damaged, dissolving for a long time so that Harmful substance is discharged into tissue, causes graft failure.
For these problems, domestic and international researcher has done numerous studies to the synosteosis of planting body, and by different tables Face processing method prepares different types of coating to improve its anti-corrosion, anti-wear performance in titanium or titanium alloy surface, and improves simultaneously Its bioactivity.
(1)Dip coating:So-called dip coating is that the mixed solution of P element prepares hydroxyapatite with containing Ca(HA)Colloidal sol. Hydroxyapatite is the main inorganic composition for constituting human body hard tissue, artificial synthesized hydroxyapatite and internal hydroxy-apatite Stone is very much like.The dip-coating in HA colloidal sols by titanium or titanium alloy, is obtained HA coatings, for increasing surface-active.Although this side Method is fairly simple, it is easy to operate, but coating performance is more sensitive to HA colloidal sols composition, pH value, temperature conditionss.Additionally, coating It is also not high with basal body binding force, it is difficult to meet practical application.
(2)Plasma spraying method:Plasma spraying be clinically study it is more ripe, using more method.This method It is to make, by the gas ionization between electrode, to form higher temperature plasma using the electric arc produced between two DC electrodes, Melting is heated during dusty material is sent into flame passes, and is ejected into rapid solidification on metal body at a high speed and form coating.Deng from Sub- spraying process has the advantages that production efficiency is high, Repeatability is good, coating uniform and suitable industrialized production.But, it is this The equipment that method and other physics heat spraying methods are required for complexity, cost is of a relatively high, and technological parameter is regulated and controled to require Compare strict.And the composition and structure of coating are inconsistent with HA in natural bone, and can not obtain equal in surfaces of complex shape Even coating.These shortcomings limit its clinical practice.
(3)Vapour deposition process:Vapour deposition is the material that will be evaporated or sputter(Metal, alloy or compound)Deposit to The surface of matrix forms film layer, for changing matrix friction and wear behavior.The titanium alloy coating obtained with vapour deposition process has Hardness higher, wear-resisting and its resistance to corrosion, and low cost, are widely used.But the universal prepares coating of vapour deposition is relatively thin, with The adhesion of substrate is not strong enough, it is difficult to meets and requires.
It will be apparent that the studies above work achieves result highly significant in some aspects, but prepared coating is deposited In not enough problem, it is difficult to meet needs of production.Therefore, have in titanium alloy surface exploitation strong with matrix combination higher Degree, good wear-resisting, corrosion resisting property and there is the coating of preferable bioactivity simultaneously, the scientific worker that still needs proceeds depth Enter and the exploration of system.
The content of the invention
It is an object of the invention to overcome the deficiencies in the prior art, there is provided a kind of titanium or the wear-resisting antibacterial biology of titanium alloy surface The preparation method and application of active ceramic film.Using the method prepare wear-resisting antibacterial bioactive ceramics film, not only with The advantage that matrix is firmly combined with, also with good wear-resisting and corrosion resistance.Simultaneously as the addition of Zn makes it also have in coating There is good biocidal property, so as to realize the feature of titanium or titanium alloy implant.Zinc is the important trace element of human body, is body It is middle to participate in one of most trace element of physiological function.This element all plays important work in terms of DNA synthesis, protein metabolism With while contributing to cell proliferation and differentiation and relevant enzyme system to play its functional activity;Zinc also has good biocidal property simultaneously. So the ceramic layer containing Zn, HA can improve titanium or the bioactivity of titanium alloy substrate and have fungistatic effect again.And, should Ceramic membrane not only can individually be used as biological coating, and can be processed by following process, be further converted to more resistance to Erosion, wear-resisting and high bioactivity composite ceramic layer, to improve the combination property of titanium or titanium alloy surface.
The technical solution adopted in the present invention is as follows:
The preparation method of a kind of titanium or the wear-resisting antibacterial bioactive ceramics film of titanium alloy surface, comprises the following steps:
(1)Chemical passivation is processed:After titanium or titanium alloy surface are through blasting treatment, it is passivated in passivating solution.
(2)The preparation of the porous hard ceramic membrane containing Zn, Ca and P:Titanium or titanium alloy after Passivation Treatment is tied in ultrasound Differential arc oxidation is carried out under the conditions of the positive square-wave pulse of conjunction, the porous hard ceramic containing Zn, Ca and P is prepared in titanium or titanium alloy surface Film;Its composition of the electrolyte of the differential arc oxidation use is as follows:
Containing in the porous hard ceramic membrane preparation process of Zn, Ca and P, ultrasonic power is 20~90W, electrolyte temperature 20~50 DEG C, electric source modes are positive square-wave pulse, oxide termination 250~450V of voltage, oxidization time 5~30 minutes, current density 1~ 5A/dm2, 100~1000Hz of frequency, dutycycle 30%~90%.
(3)Hydro-thermal process:Titanium or titanium alloy that surface prepares porous hard ceramic membrane are put into and contain alkaline aqueous solution Heated in enclosed high pressure reactor, cooled down in atmosphere after taking out drying, obtained in titanium or titanium alloy surface and contain HA With the wear-resisting antibacterial bioactive ceramics film of Zn.
In hydrothermal treatment process, alkaline aqueous solution used is the NaOH aqueous solution, and its pH value is 10-12, and heating-up temperature is 150~250 DEG C, 8~12h of soaking time, pressing force is 5~15MPa.
The blasting treatment:Material spray is silica sand, 0.2~1mm of silicon sand size, 0.2~0.5MPa of compressed air intensity;Sandblasting Substrate Surface Roughness Ra3.0~6.5 μm after treatment.
The passivating solution is mixed by hydrofluoric acid and nitric acid, and the volume ratio of hydrofluoric acid and nitric acid is 1:3~1:5;Hydrogen Fluoric acid is the hydrofluoric acid that volumetric concentration is 40%, and nitric acid is the nitric acid that volumetric concentration is 70%.1~5min of passivation time, gained Thickness to passivating film is 1~5 μm.
Described chelating calcium is to use complexometry, obtained by calcium salt and chelating agent are chelated;The calcium salt is acetic acid One or more of calcium, calcium chloride, calcium dihydrogen phosphate, calcium glycerophosphate, calcium citrate, calcium lactate and calcium oxide.The phosphoric acid Salt is one or more in sodium glycero-phosphate, sodium dihydrogen phosphate, sodium metaphosphate and polyphosphate sodium.Described chelated zinc is to use Obtained by complexometry is chelated zinc salt and chelating agent;The zinc salt is in zinc acetate, zinc chloride, zinc nitrate and zinc sulfate One or more.The chelating calcium is negatively charged with chelated zinc, in the solution with preferable stability.Described chelating agent is Na2EDTA or EDTA.Described nano granular of zinc oxide average-size is 20~60nm.
In step(1)It is preceding by titanium or titanium alloy substrate material cutting polishing after, in acetone ultrasonic wave cleaning removal surface Grease, ultrasonic time is 10~20min.
Titanium or wear-resisting antibacterial its thickness of bioactive ceramics film of titanium alloy surface prepared by method described above is 10~30 μm, Porosity is 30~60%.Can be used for the tooth implant in Medical oral cavity field.The ceramic membrane is put on the tooth kind of machined shaping Implant makes its surface produce one layer of wear-resisting antibacterial bioactive ceramics film.The planting body is tested by zoopery, its synosteosis Time is 15~20 days.
Differential arc oxidation(MAO):Micro-plasma oxidation is also called, in the application oxidizing process, due to puncturing what is formed Discharge channel can be such that hard tissue implanting material grows inwardly, therefore, it can preferably improve and area of new bone mechanical engagement.Using Ceramic layer prepared by differential arc oxidation not only has wear-resistant and corrosion resistance higher, also maintains ceramics and titanium alloy substrate Adhesion.Meanwhile, the process is simple of the technology, low cost, pollution are small, variously-shaped element can be processed, with extensive Application prospect.
Hydroxyapatite(HA):The natural composite wood that people's bone tissue is inherently constituted into bone fibres and hydroxyapatite Material.Hydroxyapatite is referred to as HA, and its element composition is Ca, P, O and H element, is closed containing that bond can occur with tissue Hydroxyl, its chemical composition, crystal structure to constitute tissue hydroxyapatite wear it is brilliant and its similar.Implantation human body hard tissue It is bonded very well with bone afterwards, and bone growth can be induced, and tissue reaction is slight, in has turned into bioactive ceramics now Preferred material.
Zinc:As one of micro elements needed by human, all physiological metabolism processes are almost participated in body, zinc has urges Change and adjustment effect, be the confactor of internal more than 300 kinds of enzymes.There is important physiological function just because of zinc, body is required Maintain enough zinc to promote cell growth, maintain cell function.Research shows that zinc take part in Gegenbaur's cell alkaline phosphatase Formed, and play catalysis, joint activation and enclosed structure effect, so that alkaline phosphatase activities increases.Can also be in acceleration bodies The synthesis of DNA and RNA, increased the aggregate velocity of protein, enhance the vitality of osteocyte.Meanwhile, zinc also have compared with Good fungistatic effect, Nano-class zinc oxide can effectively suppress streptococcus mutans activity, and can effectively suppress golden yellow Portugal Grape coccus and the growth of Escherichia coli.
Chelating calcium is prepared with chelated zinc:Because differential arc oxidation is a kind of anodic oxidation of growth in situ, will be positively charged Calcium/zinc ion is formed it into negatively charged chelating calcium/chelated zinc ions by chelating method, not only increased the stabilization of solution Property, can more promote deposition of the calcium/zinc in film.Concrete operation method:Using acid Na2EDTA solution is by calcic/zinc chemical Reagent dissolves, make+divalent calcium/zinc ion is free in the middle of solution.Then the pH value of the solution is adjusted to 2mol/L NaOH 12.Now, major part EDTA is changed into the Y of -4 valencys in solution4-In corresponding solution+divalent calcium/zinc ion progressively chelates to-divalent calcium Ion [CaY]2-/ zinc chelating ion [ZnY]2-Transformation.Chelate [CaY] with five-membered ring structure2-/[ZnY]2-Chemically stable Property it is stronger, stability constant is 10, in order to ensure to be complexed completely, at a temperature of 40~50 DEG C, with magnetic stirring apparatus by the solution connect Continuous stirring 24 hours.
Compared with prior art, the present invention has following significant advantage:
1st, wear-resisting antibacterial bioactive ceramics film thickness of the invention is uniform, is well combined with matrix, not only with good Wearability and corrosion resistance, and introducing due to ultimately generating HA and Zn makes it have bioactivity higher and antibacterial Property.The coating can both be used separately as bioactivity coatings, can also be by post processing(Cold spraying, thermal spraying and electrophoresis etc.), It is prepared into more anti-corrosion, wear-resisting and high bioactivity function of surface coating.
2nd, microplasma is formed in pure titanium to be processed or titanium alloy surface using the inventive method, is joined by controlling technique Number generates wear-resisting antibacterial bioactive ceramics film in titanium to be processed or titanium alloy surface.Performance test shows the hard of the ceramic membrane The surface microhardness of fine and close bottom reaches 600~800HV, and the corrosion current density of ceramic layer is in biosimulation solution 1.0E-9~1.0E-8A/cm2;The induction hydroxyapatite of its porous surface bioactivity coatings formed the time for 10~15 days, It is 15~25 days that cell is sprawled with repoductive time, and compared with spelter coating is not added with, fungistatic effect improves 50~70%.
3rd, the inventive method has compared with conventional similar antibacterial bioactive ceramics membrane process wear-resisting containing Zn, Ca, P Advantages below:(1)Chelating calcium, the chelated zinc/nano granular of zinc oxide of negative valency are added in electrolyte, it is more stablized, technique It is repeated preferable.(2)The content of Ca is higher in prepared coating, and HA contents are high during coating is finally obtained by hydro-thermal process; Thus protein adsorption ability, cell propagation, absorption, differentiation capability are stronger.
4th, tooth implant for oral cavity field of the present invention based on the method manufacture, shortens traditional tooth implant and bone With reference to time.Manufactured titanium or titanium alloy implant is tested by zoopery, and its synosteosis time is 15~20 days.
5th, the medicine applied in preparation process is common and more cheap, reduces production cost, is suitable to extensive work Industry metaplasia is produced.
Brief description of the drawings:
Fig. 1 is scanning electron microscope (SEM) photograph of the positive direction square-wave pulse without zinc ceramic membrane of comparative example 1.
Fig. 2 is scanning electron microscope (SEM) photograph of the positive direction square-wave pulse of the embodiment of the present invention 1 containing zinc ceramic membrane.
Specific embodiment:
The present invention is described further with reference to embodiment.
Comparative example 1
1. material prepares:After the pure cleaved polishing of titanium, oil removing is cleaned with ultrasonic wave in acetone soln.
2. sandblasting:The silicon sand size of sandblasting is 0.2mm, and compressed air intensity is 0.2MPa, obtains matrix surface coarse It is Ra3.0 μm to spend, and sandblasting instrument is RH-1010P high pressure dry blasting machines.
3. chemical passivation:In passivating solution, 40%(Volumetric concentration)HF is 2mL/L, 70%(Volumetric concentration)HNO310mL/L, body Product ratio is 1:5, remaining is water.Temperature is room temperature, is processed 2 minutes, is cleaned with running water 1~2 minute immediately after taking-up, then use Deionized water is cleaned 1~2 minute, and passivation film thickness is 1 μm.
4. prepared by positive square-wave pulse ceramic coating formed by micro-arc oxidation:Electrolyte:Concentration is 0.3mol/L calcium acetates, and concentration is The sodium glycero-phosphate of 0.01mol/L, remaining is water.
In ceramic membrane preparation process, ultrasonic power 50W, 30 DEG C of electrolyte temperature, electric source modes are positive direction square-wave pulse, The whole voltage of forward direction oxidation is 350V, and oxidization time is 25 minutes, current density 2A/dm2, frequency is 500Hz, and dutycycle is 50%, The ceramic film thickness of acquisition is 14 μm, and porosity is 55%.
5. hydro-thermal process:The aqueous solution is the NaOH aqueous solution, and its pH value is 10.Hydro-thermal reaction is carried out in autoclave, Heating-up temperature is 200 DEG C, and soaking time 10h, pressing force is 8MPa, ceramic membrane is taken out and is cooled down in atmosphere after drying.
By after drying, ceramic membrane being obtained on pure titanium surface.Fig. 1 is the scanning electron microscope (SEM) photograph of ceramic membrane prepared by this example.This The correlated performance data of example is as follows:
Ceramic of compact bottom is more than 22MPa with basal body binding force, and hardness is 600HV, and the content of calcium constituent is in film layer 6.98%, the content of P elements is 4.59%.The corrosion current density of ceramic layer is 8,123E-9A/ in biosimulation solution cm2;The induction hydroxyapatite of its porous surface bioactivity coatings formed the time for 15 days, and cell is sprawled and is with repoductive time 28 days, bacteriostasis rate was 31.58%.Passed through in wear-resisting antibacterial bioactive ceramics film prepared by pure titanium implant surface using this method Zoopery proves that its synosteosis time is 28 days.
Embodiment 1
1. material prepares:After the pure cleaved polishing of titanium, oil removing is cleaned with ultrasonic wave in acetone soln.
2. sandblasting:The silicon sand size of sandblasting is 0.2mm, and compressed air intensity is 0.2MPa, obtains matrix surface coarse It is Ra3.0 μm to spend, and sandblasting instrument is RH-1010P high pressure dry blasting machines.
3. chemical passivation:In passivating solution, 40%(Volumetric concentration)HF is 2mL/L, 70%(Volumetric concentration)HNO310mL/L, body Product ratio is 1:5, remaining is water.Temperature is room temperature, is processed 2 minutes, is cleaned with running water 1~2 minute immediately after taking-up, then use Deionized water is cleaned 1~2 minute, and passivation film thickness is 1 μm.
4. prepared by positive square-wave pulse ceramic coating formed by micro-arc oxidation:Electrolyte:Concentration is 0.3mol/L calcium acetates, and concentration is The sodium glycero-phosphate of 0.01mol/L, concentration is the zinc acetate of 0.01mol/L, and concentration is 0.3mol/LNa2EDTA, remaining is water.
In ceramic membrane preparation process, ultrasonic power 50W, 30 DEG C of electrolyte temperature, electric source modes are positive direction square-wave pulse, The whole voltage of forward direction oxidation is 350V, and oxidization time is 20 minutes, current density 2A/dm2, frequency is 500Hz, and dutycycle is 50%, The ceramic film thickness of acquisition is 12 μm, and porosity is 50%.
5. hydro-thermal process:The aqueous solution is the NaOH aqueous solution, and its pH value is 10.Hydro-thermal reaction is carried out in autoclave, Heating-up temperature is 200 DEG C, and soaking time 10h, pressing force is 8MPa, ceramic membrane is taken out and is cooled down in atmosphere after drying.
By after drying, wear-resisting antibacterial bioactive ceramics film being obtained on pure titanium surface.Fig. 2 is the prepared pottery of the present embodiment The scanning electron microscope (SEM) photograph of porcelain film.The correlated performance data of the present embodiment is as follows:
Ceramic of compact bottom is more than 20MPa with basal body binding force, and hardness is 600HV, and the content of calcium constituent is in film layer 12.75%, the content of P elements is 5.62%, and the content of Zn-ef ficiency is 3.12%.The self-corrosion of ceramic layer in biosimulation solution Current density is 7.38E-9A/cm2;The induction hydroxyapatite of its porous surface bioactivity coatings formed the time for 12 days, It is 20 days that cell is sprawled with repoductive time, and bacteriostasis rate is 60.78%.
The wear-resisting antibacterial bioactive ceramics film that is prepared on pure titanium implant surface using this method animal experiments prove that Its synosteosis time is 20 days.
Embodiment 2
1. material prepares:After the pure cleaved polishing of titanium, oil removing is cleaned with ultrasonic wave in acetone soln.
2. sandblasting:The silicon sand size of sandblasting is 0.8mm, and compressed air intensity is 0.5MPa, obtains matrix surface coarse It is Ra5.0 μm to spend, and sandblasting instrument is RH-1010P high pressure dry blasting machines.
3. chemical passivation:In passivating solution, 40%(Volumetric concentration)HF is 2ml/L, 70%(Volumetric concentration)HNO38ml/L, body Product ratio is 1:4, remaining is water.Temperature is room temperature, is processed 3 minutes, is cleaned with running water 1~2 minute immediately after taking-up, then use Deionized water is cleaned 1~2 minute, and passivation film thickness is 1 μm.
4. prepared by positive square-wave pulse ceramic coating formed by micro-arc oxidation:Electrolyte:Concentration is the calcium dihydrogen phosphate of 0.2mol/L, dense The sodium phosphate for 0.015mol/L is spent, concentration is the zinc nitrate of 0.03mol/L, and concentration is the EDTA of 0.25mol/L, and remaining is Water.
In ceramic membrane preparation process, 40 DEG C of electrolyte temperature, electric source modes are positive direction square-wave pulse, and forward direction oxidation is electric eventually It is 450V to press;Oxidization time is 10 minutes, current density 2A/dm2, frequency is 800Hz, and dutycycle is 50%, the ceramic membrane of acquisition Thickness is 12 μm, and porosity is 40%.
5. hydro-thermal process:The aqueous solution is the NaOH aqueous solution, its pH value 11.Hydro-thermal reaction is carried out in autoclave, plus Hot temperature is 180 DEG C, and soaking time is 8h, and pressing force is 10MPa, ceramic membrane is taken out and is cooled down in atmosphere after drying.
By after drying, wear-resisting antibacterial bioactive ceramics film being obtained on pure titanium surface.The correlated performance number of the present embodiment According to as follows:
Ceramic of compact bottom is more than 22MPa with basal body binding force, and hardness is 700HV, and the content of calcium constituent is in film layer 11.69%, the content of P elements is 6.75%, and the content of Zn-ef ficiency is 4.85%.The self-corrosion of ceramic layer in biosimulation solution Current density is 7.46E-9A/cm2;The induction hydroxyapatite of its porous surface bioactivity coatings formed the time for 10 days, It is 15 days that cell is sprawled with repoductive time, and bacteriostasis rate is 71.93%.
The wear-resisting antibacterial bioactive ceramics film that is prepared on pure titanium implant surface using this method animal experiments prove that Its synosteosis time is 15 days.
Embodiment 3
1. material prepares:Titanium alloy(Ti6Al4V)After cleaved polishing, oil removing is cleaned with ultrasonic wave in acetone soln.
2. sandblasting:The silicon sand size of sandblasting is 1.0mm, and compressed air intensity is 0.6MPa, obtains matrix surface coarse It is Ra4.0 μm to spend, and sandblasting instrument is RH-1010P high pressure dry blasting machines.
3. chemical passivation:In passivating solution, 70%(Volumetric concentration)HNO34ml/L, HNO38ml/L, volume ratio is 1:4, its Yu Weishui.Temperature is room temperature, is processed 5 minutes, is cleaned with running water 1~2 minute immediately after taking-up, then clean 1 with deionized water ~2 minutes, passivation film thickness was 1 μm.
4. prepared by positive square-wave pulse ceramic coating formed by micro-arc oxidation:Electrolyte:Concentration is the calcium glycerophosphate of 0.25mol/L, Concentration is the polyphosphate sodium of 0.012mol/L, and concentration is the zinc chloride of 0.02mol/L, and concentration is 0.25mol/L EDTA2Na, its Yu Weishui.
In oxide-film preparation process, 20~50 DEG C of electrolyte temperature, electric source modes are positive direction square-wave pulse, forward direction oxidation Whole voltage is 400V, and oxidization time is 15 minutes, current density 3A/dm2, frequency is 1000Hz, and dutycycle is 60%, acquisition Oxide thickness is 20 μm, and porosity is 60%.
5. hydro-thermal process:The aqueous solution is the NaOH aqueous solution, its pH value 12.Hydro-thermal reaction is carried out in autoclave, plus Hot temperature is 180 DEG C, and soaking time is 8h, and pressing force is 10MPa, ceramic membrane is taken out and is cooled down in atmosphere after drying.
By after drying, wear-resisting antibacterial bioactive ceramics film being obtained in titanium alloy surface.The correlated performance of the present embodiment Data are as follows:
Ceramic of compact bottom is more than 25MPa with basal body binding force, and hardness is 750HV, and the content of calcium constituent is in film layer 12.31%, the content of P elements is 6.02%, and the content of Zn-ef ficiency is 4.31%.The self-corrosion of ceramic layer in biosimulation solution Current density is 1.25E-8A/cm2;The induction hydroxyapatite of its porous surface bioactivity coatings formed the time for 12 days, It is 20 days that cell is sprawled with repoductive time, and bacteriostasis rate is 64.68%.
Demonstrate,proved through zoopery in wear-resisting antibacterial bioactive ceramics film prepared by titanium alloy implant surface using this method Bright its synosteosis time is 18 days.
Embodiment 4
1. material prepares:Titanium alloy(Ti6Al4V)After cleaved polishing, oil removing is cleaned with ultrasonic wave in acetone soln.
2. sandblasting:The silicon sand size of sandblasting is 1.0mm, and compressed air intensity is 0.4MPa, obtains matrix surface coarse It is Ra6.0 μm to spend, and sandblasting instrument is RH-1010P high pressure dry blasting machines.
3. chemical passivation:In passivating solution, 40%(Volumetric concentration)HF2mL/L, 70%(Volumetric concentration)HNO36mL/L, volume Ratio is 1:3, remaining is water.Temperature:Room temperature, is processed 5 minutes, is cleaned with running water 1~2 minute immediately after taking-up, then spend Ionized water is cleaned 1~2 minute, and passivation film thickness is 1 μm.
4. prepared by positive square-wave pulse ceramic coating formed by micro-arc oxidation:Electrolyte:Concentration is the calcium citrate of 0.15mol/L, dense The sodium metaphosphate for 0.015mol/L is spent, concentration is the zinc nitrate of 0.02mol/L, and concentration is the EDTA of 0.2mol/L2Na, remaining It is water.
In ceramic membrane preparation process, 40 DEG C of electrolyte temperature, electric source modes are positive direction square-wave pulse, and forward direction oxidation is electric eventually It is 380V to press;Oxidization time is 35 minutes, current density 1A/dm2, frequency is 1000Hz, and dutycycle is 70%, the ceramics of acquisition Film thickness is 25 μm, and porosity is 65%.
5. hydro-thermal process:The aqueous solution is the NaOH aqueous solution, its pH value 12.Hydro-thermal reaction is carried out in autoclave, plus Hot temperature is 180 DEG C, and soaking time is 8h, and pressing force is 10MPa, ceramic membrane is taken out and is cooled down in atmosphere after drying.
By after drying, wear-resisting antibacterial bioactive ceramics film being obtained in titanium alloy surface.The correlated performance of the present embodiment Data are as follows:
Ceramic of compact bottom is more than 30MPa with basal body binding force, and hardness is 900HV, and the content of calcium constituent is in film layer 10.31%, the content of P elements is 5.98%, and the content of Zn-ef ficiency is 4.12%.The self-corrosion of ceramic layer in biosimulation solution Current density is 9.45E-9A/cm2;The induction hydroxyapatite of its porous surface bioactivity coatings formed the time for 15 days, It is 15 days that cell is sprawled with repoductive time, and bacteriostasis rate is 63.49%.
Demonstrate,proved through zoopery in wear-resisting antibacterial bioactive ceramics film prepared by titanium alloy implant surface using this method Bright its synosteosis time is 20 days.
Embodiment 5
1. material prepares:Titanium alloy(Ti-13Nb-13Zr)After cleaved polishing, cleaned with ultrasonic wave in acetone soln Oil removing.
2. sandblasting:The silicon sand size of sandblasting is 0.8mm, and compressed air intensity is 0.25MPa, obtains matrix surface coarse It is Ra5.0 μm to spend, and sandblasting instrument is RH-1010P high pressure dry blasting machines.
3. chemical passivation:In passivating solution, 40%(Volumetric concentration)HF5mL/L, 70%(Volumetric concentration)Nitric acid 20mL/L, its Yu Weishui.Temperature:Room temperature, is processed 5 minutes, is cleaned with running water 1~2 minute immediately after taking-up, then clean 1 with deionized water~ 2 minutes, passivation film thickness was 1 μm.
4. prepared by positive square-wave pulse ceramic coating formed by micro-arc oxidation:Electrolyte:Concentration is the calcium lactate of 0.2mol/L, and concentration is The sodium dihydrogen phosphate of 0.01molg/L, concentration is the zinc nitrate of 0.015mol/L, and concentration is the EDTA of 0.2mol/L, and remaining is Water.
In ceramic membrane preparation process, 30 DEG C of electrolyte temperature, electric source modes are positive direction square-wave pulse, and forward direction oxidation is electric eventually It is 400V to press, and oxidization time is 30 minutes, current density 1.5A/dm2, frequency is 800Hz, and dutycycle is 80%, the ceramics of acquisition Film thickness is 20 μm, and porosity is 75%.
5. hydro-thermal process:The aqueous solution is the NaOH aqueous solution, its pH value 12.Hydro-thermal reaction is carried out in autoclave, plus Hot temperature is 180 DEG C, and soaking time is 8h, and pressing force is 10MPa, ceramic membrane is taken out and is cooled down in atmosphere after drying.
By after drying, wear-resisting antibacterial bioactive ceramics film being obtained in titanium alloy surface.The correlated performance of the present embodiment Data are as follows:
Ceramic of compact bottom is more than 30MPa with basal body binding force, and hardness is 1000HV, and the content of calcium constituent is in film layer 14.36%, the content of P elements is 5.09%, and the content of Zn-ef ficiency is 3.98%.The self-corrosion of ceramic layer in biosimulation solution Current density is 8.32E-9A/cm2;The induction hydroxyapatite of its porous surface bioactivity coatings formed the time for 12 days, It is 15 days that cell is sprawled with repoductive time, and bacteriostasis rate is 61.33%.
Demonstrate,proved through zoopery in wear-resisting antibacterial bioactive ceramics film prepared by titanium alloy implant surface using this method Bright its synosteosis time is 18 days.

Claims (10)

1. the preparation method of a kind of titanium or the wear-resisting antibacterial bioactive ceramics film of titanium alloy surface, it is characterised in that:The method bag Include following steps:
(1) chemical passivation treatment:After titanium or titanium alloy surface are through blasting treatment, it is passivated in passivating solution;
(2) preparation of the porous hard ceramic membrane containing Zn, Ca and P:By the titanium or titanium alloy after Passivation Treatment in combination of ultrasound just To differential arc oxidation is carried out under the conditions of square-wave pulse, the porous hard ceramic membrane containing Zn, Ca and P is prepared in titanium or titanium alloy surface; Its composition of the electrolyte of the differential arc oxidation use is as follows:
The chelating calcium is obtained by being chelated calcium salt and chelating agent using complexometry;The calcium salt is calcium acetate, chlorination One or more of calcium, calcium dihydrogen phosphate, calcium glycerophosphate, calcium citrate, calcium lactate and calcium oxide;The phosphate is glycerine One or more in sodium phosphate, sodium dihydrogen phosphate, sodium metaphosphate and polyphosphate sodium;Described chelated zinc is will using complexometry Obtained by zinc salt is chelated with chelating agent;The zinc salt is the one kind or several in zinc acetate, zinc chloride, zinc nitrate and zinc sulfate Kind;The chelating calcium is negatively charged with chelated zinc;Described chelating agent is Na2EDTA or EDTA;Described nano zine oxide Grain average-size is 20~60nm;
(3) hydro-thermal process:Titanium or titanium alloy that surface prepares porous hard ceramic membrane are put into and contain the closed of alkaline aqueous solution Heated in autoclave, cooled down in atmosphere after taking out drying, obtained in titanium or titanium alloy surface and contain HA and Zn Wear-resisting antibacterial bioactive ceramics film.
2. the preparation method of titanium according to claim 1 or the wear-resisting antibacterial bioactive ceramics film of titanium alloy surface, it is special Levy and be:Containing in the porous hard ceramic membrane preparation process of Zn, Ca and P, ultrasonic power is 20~90W, electrolyte temperature 20~50 DEG C, electric source modes are positive square-wave pulse, oxide termination 250~450V of voltage, oxidization time 5~30 minutes, current density 1~ 5A/dm2, 100~1000Hz of frequency, dutycycle 30%~90%.
3. the preparation method of titanium according to claim 1 or the wear-resisting antibacterial bioactive ceramics film of titanium alloy surface, it is special Levy and be:In step (3) hydrothermal treatment process, alkaline aqueous solution used is the NaOH aqueous solution, and its pH value is 10-12.
4. the preparation method of the wear-resisting antibacterial bioactive ceramics film of titanium or titanium alloy surface according to claim 1 or 3, its It is characterised by:In step (3) hydrothermal treatment process, heating-up temperature is 150~250 DEG C, 8~12h of soaking time, and pressing force is 5~15MPa.
5. the preparation method of titanium according to claim 1 or the wear-resisting antibacterial bioactive ceramics film of titanium alloy surface, it is special Levy and be:Titanium or the cutting of titanium alloy substrate material are polished before step (1) after, ultrasonic wave cleaning in acetone removes surface oil Dirt, ultrasonic time is 10~20min.
6. the preparation method of titanium according to claim 1 or the wear-resisting antibacterial bioactive ceramics film of titanium alloy surface, it is special Levy and be:During the blasting treatment:Material spray is silica sand, 0.2~1mm of silicon sand size, compressed air intensity 0.2~ 0.5MPa;Substrate Surface Roughness Ra3.0~6.5 μm after blasting treatment.
7. the preparation method of titanium according to claim 1 or the wear-resisting antibacterial bioactive ceramics film of titanium alloy surface, it is special Levy and be:Passivating solution is mixed by hydrofluoric acid and nitric acid described in step (1), and the volume ratio of hydrofluoric acid and nitric acid is 1:3 ~1:5;Hydrofluoric acid is the hydrofluoric acid that volumetric concentration is 40%, and nitric acid is the nitric acid that volumetric concentration is 70%;Passivation time 1~ 5min, the thickness of resulting passivating film is 1~5 μm.
8. the preparation method of titanium according to claim 1 or the wear-resisting antibacterial bioactive ceramics film of titanium alloy surface, it is special Levy and be:The wear-resisting antibacterial bioactive ceramics film thickness is 10~30 μm, the hole of wear-resisting antibacterial bioactive ceramics film Rate is 30~60%.
9. the application of titanium according to claim 1 or the wear-resisting antibacterial bioactive ceramics film of titanium alloy surface, its feature exists In:The titanium or the wear-resisting antibacterial bioactive ceramics film of titanium alloy surface are used for the tooth implant in Medical oral cavity field.
10. the application of titanium according to claim 9 or the wear-resisting antibacterial bioactive ceramics film of titanium alloy surface, its feature exists In:The wear-resisting antibacterial bioactive ceramics film is put on the tooth implant of machined shaping.
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