CN202054883U - Antibacterial stainless steel containing copper and cerium on surface - Google Patents
Antibacterial stainless steel containing copper and cerium on surface Download PDFInfo
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- CN202054883U CN202054883U CN2011200846591U CN201120084659U CN202054883U CN 202054883 U CN202054883 U CN 202054883U CN 2011200846591 U CN2011200846591 U CN 2011200846591U CN 201120084659 U CN201120084659 U CN 201120084659U CN 202054883 U CN202054883 U CN 202054883U
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- stainless steel
- cerium
- copper
- antibacterial
- bacteria
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Abstract
The utility model discloses antibacterial stainless steel containing copper and cerium on the surface, which comprises stainless steel base material and an antibacterial layer and is characterized in that the antibacterial layer containing the copper and the cerium is coated on the surface of the stainless steel base material in an diffusion way, the cerium content in the antibacterial layer is 0.04-0.12% by weight, the copper content in the antibacterial layer is 0.5-1% by weight and the thickness of a diffused alloy layer is 45-60 mu m. The production process of the antibacterial stainless steel is simple, the impact on the original corrosion resistance of the stainless steel is smaller, the impact on the original mechanical properties of the stainless steel is avoided, the using quantity of antibacterial elements is small and the copper-cerium antibacterial layer has good bacterial resistance.
Description
Technical field
The utility model relates to anti-bacteria stainless steel, particularly a kind of anti-bacteria stainless steel of surperficial cupric cerium.
Background technology
Because stainless steel favorable mechanical performance and erosion resistance, it is one of ferrous materials the most widely of using, is widely used in each industrial circle.And a lot of special dimensions not only require stainless steel attractive in appearance such as articles for daily use such as medical and health industry, food service industry, sanitary equipment, kitchen tools, for stainless germ resistance certain requirement are arranged also.The anti-bacteria stainless steel Study on Technology is risen thereupon.Japan maintains the leading position in the anti-bacteria stainless steel field, and in recent years, China is also in the research of carrying out anti-bacteria stainless steel.At present, the stainless steel antiseptic-germicide is that copper or silver are main, is divided into whole anti-bacteria stainless steel and stainless steel with antibacterial surface according to the distribution anti-bacteria stainless steel of antiseptic elements.Its preparation method has:
The feature antiseptic elements copper of the disclosed anti-bacteria stainless steel of " a kind of austenitic stainless steel " (publication number CN 1504588A) is to be distributed in the stainless steel substrate with ε-Cu phase disperse, stainless steel needs 400～900 ℃ of insulations 0.5～6 hour, makes evenly meter diffusing distribution of copper precipitated phase ε-Cu.
" a kind of austenite antimicrobial stainless steel and manufacture method thereof " (publication number CN 1789471A) disclose prepared anti-bacteria stainless steel be with Cu-Ag-Zn by a certain percentage through melting make master alloy again with together melting of stainless steel, but pass through machine-shaping after casting or forging, the thermal treatment again.The Cu-Ag-Zn master alloy contains (weight %): Ag:1.00～30.00, Zn:1.00～20.00, and all the other are copper.
More than two kinds of technology in the stainless steel preparation process, be antiseptic elements and be distributed among the stainless steel substrate, be whole anti-bacteria stainless steel.All need to carry out ageing treatment in preparation process and make copper separate out mutually, can reach better anti-bacterial effect with ε-Cu.
" a kind of method that adopts ion implantation to prepare anti-bacteria stainless steel " (publication number CN 1566397A) discloses and with ion implantation device Cu or Ag has been injected into stainless steel surface and prepares anti-bacteria stainless steel.
" a kind of method that adopts the double-deck glow legal system to be equipped with anti-bacteria stainless steel " (publication number CN 1793428A) discloses and used the double-deck glow method at stainless steel surface plating copper or silver element, prepares anti-bacteria stainless steel.
Also have " a kind of method that adopts the double-deck glow legal system to be equipped with anti-bacteria stainless steel " (publication number CN 1793428A) to disclose the method for preparing surperficial copper bearing anti-bacteria stainless steel with two brightness metal cementationes.
Be published in " metal heat treatmet " paper of 2008 the 33rd the 6th phases of volume " the double-deck glow plasma aluminising of 45 steel surface " and disclose in the method that adopts two brightness plasma technologies in 45 steel alitizings.
Up to the present, yet there are no the report of the anti-bacteria stainless steel of surperficial cupric, cerium.
The utility model content
The purpose of this utility model provides a kind of anti-bacteria stainless steel of surperficial cupric cerium.
The anti-bacteria stainless steel of a kind of surperficial cupric cerium of the utility model, comprise stainless steel substrate and antibiotic layer, unlike the prior art be: at the antibiotic layer of stainless steel substrate surface plating one deck cupric, cerium, the cerium amount that contains of antibiotic layer is 0.04～0.12wt%, copper content is 0.5～1wt%, the diffusion alloy layer thickness: 40～60 μ m.
A kind of plating method of antibiotic layer of surperficial cupric cerium is: the copper cerium alloy is made the needle-like source electrode be distributed in and wait to ooze around the stainless steel, the mass ratio of copper, Ce elements is 4: 1 in the copper cerium alloy.Put into ion metallizing furnace with pending stainless steel and by the source electrode that the copper cerium alloy is made; The copper cerium alloy is linked to each other with the source electrode power supply; Stainless steel is linked to each other with negative electrode; Working conditions is for being the argon gas operating air pressure 25Pa in the metal leakage furnace, source voltage-900V, cathode voltage-550V, 820～860 ℃ of plating temperature, source electrode and cathode distance: 23mm, soaking time 3.5 hours
The utility model anti-bacteria stainless steel can be applicable to make the anti-bacteria stainless steel container and the anti-bacteria stainless steel transport pipeline of medical industry.
Anti-bacteria stainless steel of the present utility model is after tested:
1, antibacterial ability test:
To carry out the stainless steel A after the plating of copper cerium is handled
1' and do not pass through the copper class stainless steel A that the plating of copper cerium is handled
1All make the sample of 5 * 5cm, the experiment microorganism is adopted intestinal bacteria, streptococcus aureus.Experimental procedure is as follows:
Stainless steel after will oozing the copper cerium and handling and contrast steel clean the back 120 ℃ of following autoclavings 25 minutes with ethanol.
It is 10 that postvaccinal bacterial classification is diluted to concentration with PBS liquid (0.03mol/l, PH=7.2, disodium hydrogen phosphate,anhydrous 2.83g, potassium primary phosphate 1.36g, distilled water 1000ml)
5Standardized solution, and 0.5ml bacterium liquid evenly dripped to sample and contrast stainless steel surface, cover with the aseptic plastic film respectively.
The surface is scribbled the sample of bacterium liquid and contrast stainless steel, and to put into 35 ℃, humidity be effect 24 hours in 90% the incubator.
Placed 48 hours in 35 ℃ incubator with dull and stereotyped agar culture method, on the plastics plate, calculate the bacterium number at last, calculate sterilizing rate.
Antibacterial experiment the results are shown in Table 1.Wherein the calculation formula of sterilizing rate is:
Above-mentioned contrast stainless steel aerobic plate count is the viable count after the contrast stainless steel carries out antibacterial experiment, and the anti-bacteria stainless steel aerobic plate count is meant the viable count after anti-bacteria stainless steel carries out antibacterial experiment.The results are shown in Table 1.
This method also can be used for the viable count after stainless steel carries out antibacterial experiment.
2, antibiotic endurance life test:
Use model MMS-2A frictional testing machines that the anti-bacteria stainless steel of preparation is carried out the sliding frictional wear test with the contrast steel of testing in 2.Rub(bing)test power: 1000N; The sliding friction time: 20min; To grinding material:.The results are shown in Table 1.
3, mechanical property experiment:
To be cut into tension specimen (stretching gauge length 12mm, thick 1mm) through the anti-bacteria stainless steel of antimicrobial treatment.Al2O3 sand paper with 600 granularities carries out mechanical polishing.With carrying out tension test in the private clothes of MTS-810 point protracted test machine, room temperature, the air, rate of extension is 2 * 10
-3s
-1, obtain following mechanical property, see Table 2.
4, chemical corrosion experiment:
Choose the anti-bacteria stainless steel A1 ' of preparation and contrast steel A1 of the same type and carry out electrochemical corrosion test.
(1) slit erosion test
It is 50mrm * 30mrm * 3mm that the crevice corrosion accelerated corrosion test is carried out the crevice corrosion specimen size by GB10127-88 (crevice corrosion test for stainless steel method), in the middle of each sample, bore the hole of a Φ 5mm, with nylon screw the special nylon spacer of two Φ 15mm is fastened on the sample two sides and constitutes 16 fan-shaped artificial slits.Experimental result sees Table 3.
(2) spot corrosion experiment
It is 50mm * 30mm * 3mm that the spot corrosion electrochemical test carries out spot corrosion corrosion specimen size by GB4334.9-84 (stainless steel erosion potential measurement method), adopts Φ 11.3mm * 6mm cylinder sample, and through the pre-passivation of nitric acid, Resins, epoxy is inlayed, and exposes 1cm
2Test face is 30, and " in the 3.5%NaCl solution of the abundant deoxygenation of C, adopt Japanese HZ-1 electro-chemical measuring apparatus to carry out electrokinetic potential slow sweep method and measure anodic polarization curves, when electric current reached 1mA, current potential returned scanning.Experimental result sees Table 3.
Table 1 stainless-steel antibacterial can synopsis
In the table ++ represent sterilizing rate more than 99% ,+represent more than 90% ,-represent sterilizing rate more than 80%,--the expression sterilizing rate is more than 50%, and zero expression sterilizing rate is lower than 50%.
Table 2 anti-bacteria stainless steel mechanical property synopsis
| The stainless steel sequence number | σb(N/mm 2) | δ(％) |
| A 1’ | 550 | 45 |
| A 1 | 550 | 45 |
Table 3 chemical corrosion experiment contrast table
The utility model has the advantages that:
1, the utility model stainless steel surface has copper cerium antibiotic layer, and the surface has good antibacterial effect, and the consumption of copper, Ce elements is less, and the cerium amount that contains of stainless steel surface is 0.04～0.12wt%, and copper content is 0.5～1wt%; Because the content of copper, cerium is less in the stainless steel, does not reduce the original mechanical property of stainless steel for prepared anti-bacteria stainless steel, for the original corrosion resistance nature of stainless steel reduction is arranged slightly, but influence is little;
2, copper, cerium in prepared anti-bacteria stainless steel mainly with Cu
40Fe
60, Fe
4Cu
3, CeCu
2, CeCu, CeFe
7, CeFe
2Compound form exists; Compound F 17-hydroxy-corticosterone e
4Cu
3, CeFe
7, CeFe
2Help Cu, Ce separates out with ionic condition, can significantly improve sterilization effect;
3, because copper, cerium mass ratio are that 4: 1 the fusing point of copper cerium alloy is more than 860 ℃.And copper, cerium mass ratio are that 4: 1 copper cerium alloy is exposed to can be not oxidized in the short period of time in the air, need not to deposit in the kerosene.The copper cerium alloy can not be in molten state in preparation process.And the copper cerium alloy also can be made into the source electrode of different shape.And the fusing point of cerium is 799 ℃, and is exposed in the air oxidizedly rapidly, must deposit in the kerosene.And the simple substance cerium is in molten state in time more than 800 ℃.Directly at stainless steel surface plating simple substance cerium, cerium need be soaked in the kerosene, and cerium is in molten state in preparation process, preparation technology's relative complex.
4, stainless in the past antiseptic elements is compared with silver based on copper or silver, copper cerium alloy low price, and cost is lower.And need carry out ageing treatment with copper as the antiseptic-germicide stainless steel merely, just can reach better anti-bacterial effect; And of the present utility modelly need not can reach good antibacterial effect through ageing treatment as the whole process of preparation of the anti-bacteria stainless steel of antiseptic-germicide with the copper cerium.Time and cost have been saved.
5, this technology is not limited by the size of substrate material and shape, can prepare the anti-bacteria stainless steel goods of various size and shape.Can be applicable to the anti-bacteria stainless steel container and the anti-bacteria stainless steel transport pipeline of medical industry with the anti-bacteria stainless steel of this preparation technology's preparation.
Description of drawings
Fig. 1 is the structural representation of the anti-bacteria stainless steel of the utility model surface cupric cerium.
Among the figure: 1. the antibiotic cementation coating of stainless steel substrate 2. cupric ceriums
Embodiment
The embodiment for preparing the anti-bacteria stainless steel of surperficial cupric cerium
Embodiment 1
The anti-bacteria stainless steel for preparing surperficial cupric cerium, the element of plating are the metallic copper cerium alloy, and stainless steel substrate is austenitic stainless steel A
1, A
1By its chemical constitution be by weight percentage: C:0.02, Si:0.1, Mn:1.0, S:0.002, P:0.045, Cr:21.5, Ni:23.4, Mo:5.1, Ti:0.36, all the other are Fe, adopt two brightness plasma permeating technology and equipment when plating copper, cerium, its processing parameter is: the copper cerium alloy is made the needle-like source electrode be distributed in and wait to ooze around the stainless steel, the mass ratio of copper, Ce elements is 4: 1 in the copper cerium alloy.Argon gas operating air pressure 25Pa, source voltage-900V, cathode voltage-550V, 820～860 ℃ of plating temperature, soaking time 3.5 hours, slow cooling is to room temperature, the A after oozing cerium and finishing
1Be designated as A
1', the thickness of diffused alloy layer is 48 μ m, and the cerium amount that contains of diffused alloy layer is 0.06～0.09wt%, and the copper content of diffused alloy layer is 0.58～0.79wt%.
Embodiment 2
Be equipped with the martensite antimicrobial stainless steel of surperficial cupric cerium with the plasma surface alloying legal system, the thickness of diffused alloy layer is 55 μ m, and the cerium amount that contains of diffused alloy layer is 0.08～0.12wt%, and the copper content of diffused alloy layer is 0.72～0.95wt%.The plating method is with embodiment 1.
Embodiment 3
Be equipped with the ferrite antibacterial stainless steel of surperficial cupric cerium with the plasma surface alloying legal system, the thickness of diffused alloy layer is 50 μ m, and the cerium amount that contains of diffused alloy layer is 0.06～0.1wt%, and the copper content of diffused alloy layer is 0.58～0.71wt%.The plating method is with embodiment 1.
Embodiment 4
The technology of biphase antibiotic stainless steel that is equipped with surperficial cupric cerium with the plasma surface alloying legal system is as follows, and the thickness of diffused alloy layer is 60 μ m, and the cerium amount that contains of diffused alloy layer is 0.07～0.12wt%, and the copper content of diffused alloy layer is 0.68～0.96wt%.The plating method is with embodiment 1.
Claims (2)
1. the anti-bacteria stainless steel of a surperficial cupric cerium comprises stainless steel substrate and antibiotic layer, it is characterized in that: at the antibiotic layer of stainless steel substrate surface plating one deck cupric, cerium, diffusion alloy layer thickness: 45 ~ 60 μ m.
2. anti-bacteria stainless steel according to claim 1 is characterized in that: described stainless steel substrate is austenite or martensite or ferrite or austenite-ferrite duplex stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200846591U CN202054883U (en) | 2011-03-24 | 2011-03-24 | Antibacterial stainless steel containing copper and cerium on surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200846591U CN202054883U (en) | 2011-03-24 | 2011-03-24 | Antibacterial stainless steel containing copper and cerium on surface |
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| Publication Number | Publication Date |
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| CN202054883U true CN202054883U (en) | 2011-11-30 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106544710A (en) * | 2016-11-25 | 2017-03-29 | 西华大学 | A kind of anti-soil is anti-corrosion anti-bacteria stainless steel plate and preparation method thereof |
| CN106637175A (en) * | 2016-11-09 | 2017-05-10 | 深圳市麦滕医疗器械有限公司 | Surface passivation treatment method of martensite antibacterial stainless steel for surgical operating instrument |
| CN108329515A (en) * | 2018-03-21 | 2018-07-27 | 安徽江淮汽车集团股份有限公司 | A kind of preparation method of antibacterial agent |
| CN111407365A (en) * | 2020-03-31 | 2020-07-14 | 中国人民解放军总医院 | Gasbag pressure indication type cricothyroid membrane cuts suit |
-
2011
- 2011-03-24 CN CN2011200846591U patent/CN202054883U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106637175A (en) * | 2016-11-09 | 2017-05-10 | 深圳市麦滕医疗器械有限公司 | Surface passivation treatment method of martensite antibacterial stainless steel for surgical operating instrument |
| CN106637175B (en) * | 2016-11-09 | 2019-02-22 | 深圳市麦滕医疗器械有限公司 | The surface passivation treatment method of surgical operating instrument martensite type anti-bacteria stainless steel |
| CN106544710A (en) * | 2016-11-25 | 2017-03-29 | 西华大学 | A kind of anti-soil is anti-corrosion anti-bacteria stainless steel plate and preparation method thereof |
| CN108329515A (en) * | 2018-03-21 | 2018-07-27 | 安徽江淮汽车集团股份有限公司 | A kind of preparation method of antibacterial agent |
| CN111407365A (en) * | 2020-03-31 | 2020-07-14 | 中国人民解放军总医院 | Gasbag pressure indication type cricothyroid membrane cuts suit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111130 Termination date: 20120324 |