CN102676986A - Method for preparing silver leaching layer on surface of titanium dental implant - Google Patents
Method for preparing silver leaching layer on surface of titanium dental implant Download PDFInfo
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- CN102676986A CN102676986A CN2012101342204A CN201210134220A CN102676986A CN 102676986 A CN102676986 A CN 102676986A CN 2012101342204 A CN2012101342204 A CN 2012101342204A CN 201210134220 A CN201210134220 A CN 201210134220A CN 102676986 A CN102676986 A CN 102676986A
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Abstract
The invention relates to a method for preparing a silver leaching layer on a surface of a titanium dental implant and belongs to the technical field of metal material surface modification. The method includes the steps of placing a pre-treatment titanium dental implant work piece on a worktable of a plasma surface alloying furnace, using a pure silver plate as a source electrode, and hanging the pure silver plate on the upper portion of the titanium dental implant work piece through a source electrode support; using a furnace shell as a positive electrode, subjecting the furnace shell to ground connection, then pumping a furnace cavity to ultimate vacuum, feeding argon and subjecting the work piece disposed in the furnace cavity to sputtering and cleaning; then exerting bias voltage on the work piece electrode and the source electrode to heat up the work piece electrode and the source electrode; subjecting a silver atom ( group) or a silver ion to performing accelerating motion toward the surface of the titanium dental implant work piece under actions of electric fields, and keeping warming for a certain of time to obtain the silver leaching layer. The silver leaching layer prepared by the method is capable of improving performances of the titanium dental implant.
Description
Technical field
The invention belongs to the metal surface properties modification technical field, be specifically related to the preparation method that silver layer is oozed on a kind of titanium dental implant surface.
Background technology
Pure titanium is with its good biocompatibility, mechanical property, solidity to corrosion and good workability, and no harmful ion such as separates out at advantage, and has close cytosis, is beneficial to the growth of periodontal cell and adheres to, and in the tooth field of planting, is able to widespread use.At present Chinese scholars mainly is devoted to the research of the aspects such as biocompatibility, histocompatibility, blood compatibility of biomaterial, and less relatively to the research of biomaterial surface bacterial adhesion and influence thereof.Research shows; The inefficacy of biomaterial is to be the infection (biomaterial centered infection – BCI) at center with the biomaterial mainly; The bacterial adhesion of material surface is to cause the initiating agent that infects, and nearly all bacterium can both produce adhesin, has adhesive capacity.For the planting body material; The bone regeneration around implant inflammation promptly is to be the infection at center with the planting body material; Be the major cause that causes planting body to lose efficacy, plaque accumulation is the inducement that starts of scorching morbidity of planting body week, and adhesion of bacterium and field planting are considered in the pathogenesis that infects, play a crucial role.Therefore, if can effectively suppress the adhesion of bacterium, then can reduce the scorching sickness rate of bone regeneration around implant, and then improve the success ratio of planting body implant surgery, prolong the life-span of tooth implant at the planting body material surface.
Summary of the invention
The purpose of this invention is to provide a kind of preparation method of oozing silver layer in the formation of titanium dental implant surface, the silver layer that oozes that is obtained has excellent anti-microbial property.
The present invention seeks to realize like this, it is characterized in that the preparation method that silver layer is oozed on the titanium dental implant surface is:
(1) to the pre-treatment of titanium dental implant workpiece: minute surface is polished, is polished to use SiC waterproof abrasive paper after the oil removing of titanium dental implant workpiece surface step by step to it, again cleaning, drying;
(2) as shown in Figure 1; The titanium dental implant workpiece (4) that pre-treatment is good is put on the work stage (8) of plasma surface alloying stove, and is connected with the negative electrode of workpiece power supply (12) through work stage (8), is called the workpiece utmost point; Through source electrode support (11) fine silver plate (3) is hung on the top of the titanium dental implant workpiece (4) in the furnace chamber (1) again; If itself and titanium dental implant workpiece (4) be 15 mm～20 mm apart, and fine silver plate (3) is connected with the negative electrode of source electrode power supply (13), is called source electrode through source electrode support (11); Furnace shell (2) is connected with the anode of workpiece power supply (12) with source electrode power supply (13), and ground connection;
(3) be plasma surface alloying stove furnace chamber (1) inside degree of being evacuated 1 * 10
– 1Pa; The argon gas that feeds flow and be 30 sccm～35 sccm is in furnace chamber (1); Make furnace chamber (1) internal gas pressure maintain 35 Pa～45 Pa, connect the cathode power of workpiece power supply (12), between anode and negative electrode, apply volts DS; When workpiece utmost point temperature rises to 400 ℃～600 ℃, the titanium dental implant workpiece is carried out icon bombardment cleaning 20 min～40 min;
(4) with workpiece pole tension Tiao Zhi – 450 V～– 500 V, connect source electrode power supply (13), and with source voltage Tiao Zhi – 950 V～– 1000V.The source electrode temperature maintenance is at 900 ℃～950 ℃, and workpiece utmost point temperature is controlled at 800 ℃～850 ℃, is incubated to break off source electrode and workpiece utmost point power supply behind 2 h～6 h, makes the workpiece slow cooling arrive room temperature.
Advantage of the present invention and positively effect are that the silver layer that oozes on pure titanium surface has excellent anti-bacterial attachment performance.
Description of drawings
Fig. 1 is a plasma surface alloying furnace structure synoptic diagram;
Fig. 2 is the fluorescence micrograph that oozes the silver layer surface bacterial adhesion;
Fig. 3 is the fluorescence micrograph of polishing titanium dental implant workpiece surface bacterial adhesion;
Among the figure: 1-furnace chamber; 2-furnace shell; 3-fine silver plate; 4-titanium dental implant workpiece; 5-view port; 6-photoelectric thermometer; 7-be connected with pumped vacuum systems; 8-work stage; 9-furnace bottom; 10-be connected with inflation system; 11-source electrode support; 12-workpiece utmost point power supply; 13-source electrode power supply; 14-adhere to the single bacterium of titanium dental implant workpiece surface.
Embodiment
Existing tooth implant with the pure titanium material of TA2 is an example, and the present invention is implemented, and is as shown in Figure 1:
(1) with the tooth implant workpiece of the pure titanium material of TA2 as matrix, with using SiC waterproof abrasive paper that minute surface is polished, is polished to the titanium dental implant workpiece step by step behind the surface degreasing of titanium dental implant workpiece, clean again, drying;
(2) pre-treatment is good titanium dental implant workpiece (4) is put on the work stage (8) of plasma surface alloying stove; And be connected with the negative electrode of workpiece power supply (12) through work stage (8); Be called the workpiece utmost point, through source electrode support (11) fine silver plate (3) hung on the top of the titanium dental implant workpiece (4) in the furnace chamber (1) again, establish itself and titanium dental implant workpiece (4) 15 mm apart; And fine silver plate (3) is connected with the negative electrode of source electrode power supply (13) through source electrode support (11); Be called source electrode, furnace shell (2) is connected with the anode of workpiece power supply (12) with source electrode power supply (13), and ground connection;
(3) be plasma surface alloying stove furnace chamber (1) inside degree of being evacuated 1 * 10
– 1Pa; The argon gas that feeds flow and be 35 sccm is in furnace chamber (1); Make furnace chamber (1) internal gas pressure maintain 40 Pa, connect the cathode power of workpiece power supply (12), between anode and negative electrode, apply volts DS; When workpiece utmost point temperature rises to 500 ℃, the titanium dental implant workpiece is carried out icon bombardment cleaning 30 min;
(4) with workpiece pole tension Tiao Zhi – 475 V, connect source electrode power supply (13), and with source voltage Tiao Zhi – 975 V.The source electrode temperature maintenance is at 925 ℃, and workpiece utmost point temperature is controlled at 825 ℃, is incubated to break off source electrode and workpiece utmost point power supply behind 4 h, makes the workpiece slow cooling arrive room temperature.
Under above-mentioned processing condition, have excellent anti bacterial adhesion performance at the silver layer that oozes of pure titanium surface preparation, its surface does not have bacterial adhesion, and is as shown in Figure 2.Polishing pure titanium surface adhesion has a large amount of bacteriums, as shown in Figure 3.
Claims (2)
1. the preparation method that silver layer is oozed on the titanium dental implant surface is characterized in that: comprise the following steps:
I. titanium dental implant workpiece pre-treatment: use SiC waterproof abrasive paper that it is polished, is polished to minute surface step by step after the oil removing of titanium dental implant workpiece surface, again cleaning, drying;
II. the titanium dental implant workpiece (4) that pre-treatment is good is put on the work stage (8) of plasma surface alloying stove; And be connected with the negative electrode of workpiece power supply (12) through work stage (8); Be called the workpiece utmost point, through source electrode support (11) fine silver plate (3) hung on the top of the titanium dental implant workpiece (4) in the furnace chamber (1) again, establish itself and titanium dental implant workpiece (4) 15 mm～20 mm apart; And fine silver plate (3) is connected with the negative electrode of source electrode power supply (13) through source electrode support (11); Become source electrode, furnace shell (2) is connected with the anode of workpiece power supply (12) with source electrode power supply (13), and ground connection;
III. is plasma surface alloying stove furnace chamber (1) inside degree of being evacuated 1 * 10
– 1Pa; The argon gas that feeds flow and be 30 sccm～35 sccm is in furnace chamber (1); Make furnace chamber (1) internal gas pressure maintain 35 Pa～45 Pa, connect the cathode power of workpiece power supply (12), between anode and negative electrode, apply volts DS; When workpiece utmost point temperature rises to 400 ℃～600 ℃, the titanium dental implant workpiece is carried out icon bombardment cleaning 20 min～40 min;
IV. the workpiece pole tension is transferred 500 V to – 450V～–; Connect source electrode power supply (13); And with source voltage Tiao Zhi – 950 V～– 1000 V, the source electrode temperature maintenance is at 900 ℃～950 ℃, and workpiece utmost point temperature is controlled at 800 ℃～850 ℃; Break off source electrode and workpiece utmost point power supply after being incubated 2 h～6 h, make the workpiece slow cooling to room temperature.
2. the preparation method that silver layer is oozed on a kind of titanium dental implant according to claim 1 surface is characterized in that: described titanium dental implant is the pure titanium of TA2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210134220.4A CN102676986B (en) | 2012-05-03 | 2012-05-03 | Method for preparing silver leaching layer on surface of titanium dental implant |
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| CN201210134220.4A CN102676986B (en) | 2012-05-03 | 2012-05-03 | Method for preparing silver leaching layer on surface of titanium dental implant |
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| CN102676986A true CN102676986A (en) | 2012-09-19 |
| CN102676986B CN102676986B (en) | 2014-03-19 |
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| CN201210134220.4A Expired - Fee Related CN102676986B (en) | 2012-05-03 | 2012-05-03 | Method for preparing silver leaching layer on surface of titanium dental implant |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1793428A (en) * | 2005-12-31 | 2006-06-28 | 武汉科技大学 | Process for preparing anti-bacteria stainless steel by double-layer glowing method |
| CN101880860A (en) * | 2010-05-29 | 2010-11-10 | 太原理工大学 | Preparation method of stainless steel surface copper-silver diffusion coating layer |
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2012
- 2012-05-03 CN CN201210134220.4A patent/CN102676986B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1793428A (en) * | 2005-12-31 | 2006-06-28 | 武汉科技大学 | Process for preparing anti-bacteria stainless steel by double-layer glowing method |
| CN101880860A (en) * | 2010-05-29 | 2010-11-10 | 太原理工大学 | Preparation method of stainless steel surface copper-silver diffusion coating layer |
Non-Patent Citations (2)
| Title |
|---|
| 张平则等: "双辉等离子表面冶金Ti-Cu阻燃合金的制备工艺", 《中国有色金属学报》 * |
| 徐卫华等: "钛表面载银抗菌功能膜的抑菌性研究", 《贵州医药》 * |
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