CN101748470A - Antibacterial stainless steel with electrochemical oxidation film - Google Patents
Antibacterial stainless steel with electrochemical oxidation film Download PDFInfo
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- CN101748470A CN101748470A CN200910260288A CN200910260288A CN101748470A CN 101748470 A CN101748470 A CN 101748470A CN 200910260288 A CN200910260288 A CN 200910260288A CN 200910260288 A CN200910260288 A CN 200910260288A CN 101748470 A CN101748470 A CN 101748470A
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/34—Anodisation of metals or alloys not provided for in groups C25D11/04 - C25D11/32
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Abstract
The invention discloses antibacterial stainless steel with an electrochemical oxidation film. The stainless steel comprises a stainless steel matrix, wherein an antibacterial oxidation film is covered on the stainless steel matrix and the antibacterial oxidation film is a spinel type oxidation film. The invention also discloses a preparation method of the antibacterial stainless steel with the electrochemical oxidation film. The method comprises the following steps: placing a defatted stainless steel material in an electrochemical oxidation mixed solution, alternately changing positive electricity and negative electricity, wherein the current density is 10-100mA/dm<2>; processing for 5-20 minutes at 30-60 DEG C to form a thin spinel oxidation film, then cleaning the oxidation film with clean water and drying. The electrochemical oxidation mixed solution per litre is prepared by the following components: 200-500g of sulfuric acid, 50-250g of chromic acid, 5-20g of ammonium molybdate, 5-20g of manganese sulfate, 0.1-10g of silver salt and 0.2-20g of rare earth sulfate or rare earth nitrate. The invention has good antibacterial effect.
Description
Technical field
The invention belongs to field of metal surface treatment technology international monopoly C25D classification, relate to a kind of antibacterial stainless steel with electrochemical oxidation film.
Background technology
In recent years, many industrially-advanced countries competitively develop the anti-bacteria stainless steel goods, are example to produce the maximum Japan of product innovation, and coating type anti-bacteria stainless steel, alloy-type anti-bacteria stainless steel, composite bactericidal stainless steel etc. are arranged.
1, coating type anti-bacteria stainless steel
Promptly at paint films such as surface of stainless steel coated Resins, epoxy, acrylic resin, vibrin, in resin, add the antiseptic-germicide of the 2-0 pyridine-1-sulfidation-oxidation zinc salt etc. of 0.01-5.0% mass parts, and promptly form the stainless material of antibacterial effect after several minutes 280 ℃ of bakings, as the antibiotic steel plate in Japanese Datong District.
A kind of in addition in coating type: the photocatalytic coating type, its existing anti-microbial effect also has the ability of decomposing organic matter matter, and promptly antifouling and deodorization promptly adds the inorganic bond layer in surface of stainless steel, sprays or is coated with photocatalyst layer (being the nano TiO 2 layer).
This class stainless steel coating bonding force instability the most important thing is and can not at high temperature use, and in the life-time service, causes explosion to be peeled off owing to the thermal expansivity of film and metallic matrix is different.
2, alloy-type anti-bacteria stainless steel
Promptly in the smelting process of stainless material, add inorganic antibacterial element such as copper, silver etc., so claim that it is the alloy-type anti-bacteria stainless steel.Appeared in the newspapers at present both at home and abroad lead the copper of adding anti-bacteria stainless steel and Jia Yin anti-bacteria stainless steel arranged.
A) add the copper stainless steel, as three kinds of stainless typical chemical ingredientss of the day new system steel company exploitation of Japan, as following table 1
Table 1 anti-bacteria stainless steel composition
This stainless steel in use has the cupric ion stripping and has brought into play certain antibacterial effect, but because of add-on reaches 1.5～3.8%, so also make it not corrosion-resistant in some medium, especially spot corrosion is more serious.Domestic several years ago also once had produce this stainless report.
B) add silver-colored anti-bacteria stainless steel
In the inorganic antibacterial element, silver is more far better than the antibacterial effect of copper, surpasses ten times to tens of times, and the anti-bacteria stainless steel chemical ingredients as Kawasaki, Japan system iron is announced sees Table 2
Table 2 Kawasaki company silver-containing antibacterial stainless steel chemistry is formed
But contain the silver alloys anti-bacteria stainless steel, the content of silver is more, increased product cost, and smelt in the course of processing, composition is difficult for evenly, and particularly antibiotic only is that upper layer works, silver is that precious metal is distributed in the integral material, really be the waste resource, simultaneously, the variable color of material surface silver also is difficult to avoid.
3, composite bactericidal stainless steel
The cutter of processed food and dish, meat of poultris food often becomes the media of pathogen contamination food, and general stainless steel hardness does not reach the desired sharp hardness of cutting edge.Therefore, develop cutter composite bactericidal stainless material in succession as Aichi, Janpan system steel Co., Ltd. etc., the cutter appearance adopts the SUS410 Martensite Stainless Steel, and the intermediate copper sheet can play anti-microbial effect, edge (core) employing high rigidity AUS8 steel.
This composite bactericidal Stainless Steel Products make complexity, and the antibacterial effect of antibiotic copper sheet is not good, and China market is not seen as yet.
4, vacuum plating type anti-bacteria stainless steel
China factory has developed the anti-bacteria stainless steel of filling silver in the plating titanium film in vacuum, but higher because of its cost, the discoloration problem of its surface silver of county also is difficult to solve.
Summary of the invention
The invention provides the high antibacterial stainless steel with electrochemical oxidation film of a kind of anti-microbial property and surface quality.
The present invention adopts following technical scheme:
A kind of antibacterial stainless steel with electrochemical oxidation film comprises stainless steel base, covers the antibiotic oxide film of one deck at stainless steel base, and described antibiotic oxide film is the spinel type oxide film.
The present invention also provides a kind of preparation method of antibacterial stainless steel with electrochemical oxidation film, and this method is, the stainless material after the skimming treatment is placed the electrochemical oxidation mixed solution, and through positive and negative electrical alternations conversion, current density is 10-100mA/dm
2Under the condition of 30-60 ℃ of temperature, handle through 5～20 fens clock times, form skim spinel oxide film, then it is cleaned in clear water, carry out drying treatment again, every liter of proportioning of described electrochemical oxidation mixed solution is: sulfuric acid 200～500 grams, chromic acid are that 50～250 grams, amine molybdate are that 5～20 grams, manganous sulfate are 5～20 grams, silver salt 0.1～10 gram, sulfuric acid rare earth salt or rare earth nitrate salt 0.2～20 gram.
The time of described reversal checker is positive dirction 1～30 second, negative direction 1～30 second.
The present invention adopts electrochemical oxidation method, make Stainless Steel Products (comprising plate, line, bar etc.) surface form the germ resistance oxide film of hundreds of nanometers, its strong adhesion, be not subjected to the combination of temperatures involved and matrix metal, use more reliable than being coated with the genotype anti-bacteria stainless steel, than the low cost of manufacture of alloy-type anti-bacteria stainless steel, lower than the stainless tooling cost simple for production of composite bactericidal.And the present invention utilizes I ZL02138212.3 " electrochemical oxidation method for treating surface of stainless steel " of application to form the spinel type oxide film that a layer thickness reaches 200～500nm (nanometer) at stainless material and product surface, and Cr (chromium) Ni (nickel), Mn elements such as (manganese) can not only be arranged in film, also have M0 (molybdenum), Ce (rare earth), Ag antiseptic elements such as (silver).
Its structural formula is MeaCrbOr---a kind of jewel type spinel oxide film, 2a+3b=2r in the formula
The general designation of Me---various metallic elements (comprises silver, molybdenum, cobalt, nickel, manganese ... Deng)
Cr---chromium element
A---the scale-up factor of different metal element
B---the scale-up factor of chromium element
R---the scale-up factor of oxidation element
Test proves that the present invention helps metal ion and discharges reduction potential from the metal matrix material surface.The performance of this argentiferous oxide film:
1, anti-microbial property:
1.1 to stainless steel substrates of the present invention is carried out antibiotic evaluation, test result is " to announce just row (SGS) " by internal authority inspection body:
Test result shows: intestinal bacteria 8099, streptococcus aureus ATCC6538 antibiotic rate are all reached 99.8%.
1.2 adopt the present invention to make stainless steel trough and censorship.By anti-biotic material inspection center of Physical Chemistry Technology Inst., Chinese Academy of Sciences (Chinese antibiotic employer's organization measuring unit, China laboratory authorized by state, china metrology Accreditation unit) the stainless steel standard sheet material of taking from the test sample presentation is carried out antibiotic rate and detects detected result:
Test result shows: to the sterilizing rate of intestinal bacteria and streptococcus aureus all greater than 99%.
1.3 also having the unapproachable sterilizing ability antifungal of common silver-containing inorganic element standard sample of photo to mould, the antibiotic oxide film of the present invention send Physical Chemistry Technology Inst., Chinese Academy of Sciences's test:
Detect and use bacterium:
| Bacterial classification | Bacterium number |
| Aspergillus niger | AS3.4463 is equal to ATCC6275 |
| Have a liking for loose mould | ??AS3.745 |
| Ball hair shell | ??AS3.4254 |
| Green sticking broom is mould | ??AS3.3987 |
| The short stalk of teething is mould | ??AS3.3984 |
Detected result:
| Sample | The mildew grade |
| Filter paper bar (14 days) | 4 grades |
| Antibacterial and mouldproof stainless steel-the present invention (28 days) | 1 grade |
Detected result shows: the anti-mildew effect reaches one-level (outstanding level), cultivates vestige growth (10%) after 28 days that is:.
The antibiotic mechanism of antibiotic oxide film:
The reduction potential of high oxidation state silver is high, can activate air and water and generate active oxygen and hydroxyl oxygen groups .OH, and they have very strong redoxomorphism.Cause bacterium to be destroyed, under the effect of light, can strengthen antibacterial effect and the organism of killed bacterial is decomposed, get rid of the bacterium remains and play anti-soil, cleaning action simultaneously.
2, surface quality
1. anti-discoloration
After containing silver element in the material, distinct issues are energy variable colors, and this is that International Technology circle, business circles are concerned about most, because silver is easy to change.But in electrochemical oxidation film silver be in the macromolecule crystal film and and the chromium symbiosis, this has just ensured that silver is not easy to change, reaches 2 years and 48 hours through daylight, ultraviolet irradiation time, the equal nondiscoloration of argentiferous oxide film stainless steel of making is accepted by market.
2. processing characteristics
Antibiotic oxide film has the processing characteristics same with the stainless steel color oxide film, can bear the bending and the deep-drawing of 180 degree, mold pressing processing etc.
Wear-resisting and the anti-ruled area of oxide film is all than former body stainless steel height: can rub more than 200 times through the rubber of 500 grams of must loading, and can stand the draw points portrayal that 120 grams bear a heavy burden.
Through national non-ferrous metal study total institute quality supervision and test center according to the GB/T24170.1-2009 national standard in, sand trial method in the cut resistance test of Stainless Steel Watch surface layer is measured: knockout quality 1kg is qualified, sample of the present invention can reach 4.9kg, proves that its wear resistance is excellent.
3. preventing from heavy metal is separated out performance
General stainless steel (vessel), martensite type stainless steel tableware etc. particularly, when in high-temperature water, depositing, separate out nickel easily, heavy metals such as chromium, when exceeding national standard, though or do not exceed, but when separating out, long-term accumulation is that absorption of human body accumulates in the body, and health is promptly constituted harm, and through electrochemical oxidation process of the present invention, the formation densification, successive can be through the oxidation diaphragm of high temperature (600 ℃ `700 ℃), and one heavy metal molecule can not separated out, detecting authoritative institution through Shanghai SGS measures, boiled in the aqueous solution of 4% acetic acid 30 minutes, static again 24 hours (national standard) detects Ni, heavy metal elements such as Cr are O, and this is as good as the Stainless Steel Products industry is a Gospel.
Embodiment
A kind of antibacterial stainless steel with electrochemical oxidation film comprises stainless steel base, it is characterized in that, covers the antibiotic oxide film of one deck at stainless steel base, and described antibiotic oxide film is that the structural formula of the described spinel type oxide film of spinel type oxide film is: Me
aCr
bO
r, 2a+3b=2r in the formula
The general designation of Me---various metallic elements comprises silver, molybdenum, cobalt, nickel, manganese, and present embodiment adopts metal to comprise silver, perhaps, the metal that adopts by at least by a kind of and silver-colored composition the in molybdenum, cobalt, nickel and the manganese,
Cr---chromium element,
A---the scale-up factor of different metal element,
B---the scale-up factor of chromium element,
R---the scale-up factor of oxidation element.
Above-mentioned antibacterial stainless steel with electrochemical oxidation film can adopt following making method preparation:
" electrochemical oxidation method for treating surface of stainless steel " with reference to my invention (ZL02138212.3) adds antiseptic elements in following solution:
Sulfuric acid 200～500 grams per liters
Chromic acid 50～250 grams per liters
Amine molybdate 5～20 grams per liters
Manganous sulfate 5～20 grams per liters
In add silver salt 0.1～10 grams per liter again, silver salt is a kind of in silver chloride, Sulfuric acid disilver salt, silver chromate, the Silver Nitrate; Sulfuric acid or rare earth nitrate salt 0.2～20 grams per liter, and still under the effect of rectangle exchange current, temperature are room temperature to 60 ℃, through oxidation in 5～20 minutes again through boiling pure water sealing 5 minutes.
Embodiment still adds silver salt 1～10 grams per liter in the solution of ZL02138212.3 patent working example, cerous sulfate 5 grams per liters, and oxidation promptly formed antibiotic oxide film in 15 minutes under 30 ℃ of temperature in above-mentioned solution.
Embodiment result:
Antibacterial effect:
To intestinal bacteria sterilization rate 99.5%
To streptococcus aureus sterilization rate 98%
Surface working performance, glossiness, preventing from heavy metal are separated out performance etc., all meet the GB/T24170.1-2009 national standard.
Embodiment 1
A kind of preparation method of antibacterial stainless steel with electrochemical oxidation film, this method be, the stainless material after the skimming treatment is placed the electrochemical oxidation mixed solution, and through positive and negative electrical alternations conversion, current density is 10mA/dm
2Under the condition of 30 ℃ of temperature, handle through 5 fens clock times, form skim spinel oxide film, then it is cleaned in clear water, carry out drying treatment again, every liter of proportioning of described electrochemical oxidation mixed solution is: sulfuric acid 200 grams, chromic acid are that 50 grams, amine molybdate are that 5 grams, manganous sulfate are 5 grams, silver salt 0.1 gram, sulfuric acid rare earth salt or rare earth nitrate salt 0.2 gram.
The time of described reversal checker is positive dirction 5 seconds, negative direction 5 seconds.
Embodiment 2
A kind of preparation method of antibacterial stainless steel with electrochemical oxidation film, this method be, the stainless material after the skimming treatment is placed the electrochemical oxidation mixed solution, and through positive and negative electrical alternations conversion, current density is 100mA/dm
2Under the condition of 60 ℃ of temperature, handle through 20 fens clock times, form skim spinel oxide film, then it is cleaned in clear water, carry out drying treatment again, every liter of proportioning of described electrochemical oxidation mixed solution is: sulfuric acid 500 grams, chromic acid are that 250 grams, amine molybdate are that 20 grams, manganous sulfate are 20 grams, silver salt 10 grams, sulfuric acid rare earth salt or rare earth nitrate salt 20 grams.
The time of described reversal checker is positive dirction 30 seconds, negative direction 30 seconds.
Embodiment 3
The present invention also provides a kind of preparation method of antibacterial stainless steel with electrochemical oxidation film, and this method is, the stainless material after the skimming treatment is placed the electrochemical oxidation mixed solution, and through positive and negative electrical alternations conversion, current density is 10-100mA/dm
2(embodiment selects: 10,60 or 100mA/dm
2), under the condition of 30-60 ℃ of temperature, handle (embodiment selection: 30 through 5～20 fens clock times, under 40 or 60 ℃ through 5, clock time was handled in 15 or 20 minutes), form skim spinel oxide film, then it is cleaned in clear water, carry out drying treatment again, every liter of proportioning of described electrochemical oxidation mixed solution is: (embodiment selects sulfuric acid 200～500 grams: 200,300 or 500 grams), chromic acid is that (embodiment selects 50～250 grams: 50,180 or 250 grams), amine molybdate is that (embodiment selects 5～20 grams: 5,15 or 20 grams), manganous sulfate is that (embodiment selects 5～20 grams: 5,10 or 20 grams), (embodiment selects silver salt 0.1～10 gram: 0.1,3 or 10 grams), (embodiment selects: 0.2 for sulfuric acid rare earth salt or rare earth nitrate salt 0.2～20 gram, 12 or 20 grams), the time of described reversal checker is that (embodiment selects: 1 in positive dirction 1～30 second, 10 or 30 seconds), (embodiment selected negative direction: 1 in 1～30 second, 10 or 30 seconds).
Embodiment 4
A kind of preparation method of antibacterial stainless steel with electrochemical oxidation film, this method be, the stainless material after the skimming treatment is placed the electrochemical oxidation mixed solution, and through positive and negative electrical alternations conversion, current density is 60mA/dm
2Under the condition of 40 ℃ of temperature, handle through 15 fens clock times, form skim spinel oxide film, then it is cleaned in clear water, carry out drying treatment again, every liter of proportioning of described electrochemical oxidation mixed solution is: sulfuric acid 300 grams, chromic acid are that 200 grams, amine molybdate are that 15 grams, manganous sulfate are 10 grams, silver salt 6 grams, sulfuric acid rare earth salt or rare earth nitrate salt 10 grams.The time of described reversal checker is positive dirction 20 seconds, negative direction 20 seconds.
Claims (3)
1. an antibacterial stainless steel with electrochemical oxidation film comprises stainless steel base, it is characterized in that, covers the antibiotic oxide film of one deck at stainless steel base, and described antibiotic oxide film is the spinel type oxide film.
2. the preparation method of the described antibacterial stainless steel with electrochemical oxidation film of claim 1 is characterized in that, the stainless material after the skimming treatment is placed the electrochemical oxidation mixed solution, and through positive and negative electrical alternations conversion, current density is 10-100mA/dm
2Under the condition of 30-60 ℃ of temperature, handle through 5～20 fens clock times, form skim spinel oxide film, then it is cleaned in clear water, carry out drying treatment again, every liter of proportioning of described electrochemical oxidation mixed solution is: sulfuric acid 200～500 grams, chromic acid are that 50～250 grams, amine molybdate are that 5～20 grams, manganous sulfate are 5～20 grams, silver salt 0.1～10 gram, sulfuric acid rare earth salt or rare earth nitrate salt 0.2～20 gram.
3. preparation method according to claim 2 is characterized in that, the time of reversal checker is positive dirction 1～30 second, negative direction 1～30 second.
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| CN200910260288A CN101748470A (en) | 2009-12-28 | 2009-12-28 | Antibacterial stainless steel with electrochemical oxidation film |
| PCT/CN2010/080409 WO2011079784A1 (en) | 2009-12-28 | 2010-12-28 | Antibacterial stainless steel with electrochemical oxidation film |
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|---|---|---|---|
| CN200910260288A CN101748470A (en) | 2009-12-28 | 2009-12-28 | Antibacterial stainless steel with electrochemical oxidation film |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101886285A (en) * | 2010-06-25 | 2010-11-17 | 广东工业大学 | Method for preparing stainless steel with antibacterial surface |
| CN102002745A (en) * | 2010-12-17 | 2011-04-06 | 周红 | Method and device for manufacturing deodorant, antibacterial, antimycotic and antifouling aluminium foils or alloy aluminum foils |
| WO2011079784A1 (en) * | 2009-12-28 | 2011-07-07 | 常州佳得顺抗菌材料科技有限公司 | Antibacterial stainless steel with electrochemical oxidation film |
| CN103276426A (en) * | 2013-05-17 | 2013-09-04 | 东南大学 | Manufacturing method of corrosion-resistant and antibacterial oxide film stainless steel |
| CN103991250A (en) * | 2014-04-30 | 2014-08-20 | 华南理工大学 | Antibiotic stainless steel with surface containing silver, and preparation method thereof |
| CN105200466A (en) * | 2015-09-25 | 2015-12-30 | 中国科学院金属研究所 | Production method of antibacterial colored stainless steel |
| CN106637353A (en) * | 2016-11-17 | 2017-05-10 | 中国船舶重工集团公司第七二五研究所 | Stainless steel surface passivation treatment solution and method |
| CN109930191A (en) * | 2019-03-29 | 2019-06-25 | 同曦集团有限公司 | Antibacterial stainless steel and preparation method thereof |
| CN111534844A (en) * | 2020-05-14 | 2020-08-14 | 东南大学 | Antibacterial stainless steel surface treatment device and method |
| CN111778538A (en) * | 2020-07-06 | 2020-10-16 | 上海脉诺金属表面处理技术有限公司 | Antibacterial electrochemical oxidation liquid and electrochemical oxidation process for stainless steel |
| CN112160001A (en) * | 2020-09-25 | 2021-01-01 | 同曦集团有限公司 | Antibacterial, mildewproof and antiviral oxidized stainless steel and preparation method thereof |
| CN112160007A (en) * | 2020-09-25 | 2021-01-01 | 同曦集团有限公司 | Antibacterial, mildewproof and antiviral electrophoresis stainless steel and preparation method thereof |
| CN112522773A (en) * | 2020-11-04 | 2021-03-19 | 东南大学 | Preparation method of stainless steel with antibacterial surface |
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| JPS61250199A (en) * | 1985-04-27 | 1986-11-07 | Nippon Steel Corp | Production of tin-free steel having excellent high-temperature resistant sterilizability |
| JPH09296295A (en) * | 1996-05-07 | 1997-11-18 | Nisshin Steel Co Ltd | Chemically colored stainless steel improved in antibacterial property |
| CN1243132C (en) * | 2002-09-03 | 2006-02-22 | 周国桢 | Electrochemical oxidation method for treating surface of stainless steel |
| SE528303C2 (en) * | 2004-11-30 | 2006-10-17 | Sandvik Intellectual Property | Band product with a spinel or perovskite coating, electrical contact and method of making the product |
| CN101125970A (en) * | 2006-08-18 | 2008-02-20 | 中国科学院金属研究所 | Antibiotic coat |
| CN101748470A (en) * | 2009-12-28 | 2010-06-23 | 常州佳得顺抗菌材料科技有限公司 | Antibacterial stainless steel with electrochemical oxidation film |
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- 2009-12-28 CN CN200910260288A patent/CN101748470A/en active Pending
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- 2010-12-28 WO PCT/CN2010/080409 patent/WO2011079784A1/en active Application Filing
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011079784A1 (en) * | 2009-12-28 | 2011-07-07 | 常州佳得顺抗菌材料科技有限公司 | Antibacterial stainless steel with electrochemical oxidation film |
| CN101886285A (en) * | 2010-06-25 | 2010-11-17 | 广东工业大学 | Method for preparing stainless steel with antibacterial surface |
| CN102002745A (en) * | 2010-12-17 | 2011-04-06 | 周红 | Method and device for manufacturing deodorant, antibacterial, antimycotic and antifouling aluminium foils or alloy aluminum foils |
| CN103276426A (en) * | 2013-05-17 | 2013-09-04 | 东南大学 | Manufacturing method of corrosion-resistant and antibacterial oxide film stainless steel |
| CN103276426B (en) * | 2013-05-17 | 2015-07-22 | 东南大学 | Manufacturing method of corrosion-resistant and antibacterial oxide film stainless steel |
| CN103991250A (en) * | 2014-04-30 | 2014-08-20 | 华南理工大学 | Antibiotic stainless steel with surface containing silver, and preparation method thereof |
| CN103991250B (en) * | 2014-04-30 | 2016-05-04 | 华南理工大学 | Anti-bacteria stainless steel of a kind of surperficial argentiferous and preparation method thereof |
| CN105200466A (en) * | 2015-09-25 | 2015-12-30 | 中国科学院金属研究所 | Production method of antibacterial colored stainless steel |
| CN106637353A (en) * | 2016-11-17 | 2017-05-10 | 中国船舶重工集团公司第七二五研究所 | Stainless steel surface passivation treatment solution and method |
| CN109930191A (en) * | 2019-03-29 | 2019-06-25 | 同曦集团有限公司 | Antibacterial stainless steel and preparation method thereof |
| CN111534844A (en) * | 2020-05-14 | 2020-08-14 | 东南大学 | Antibacterial stainless steel surface treatment device and method |
| CN111778538A (en) * | 2020-07-06 | 2020-10-16 | 上海脉诺金属表面处理技术有限公司 | Antibacterial electrochemical oxidation liquid and electrochemical oxidation process for stainless steel |
| CN112160001A (en) * | 2020-09-25 | 2021-01-01 | 同曦集团有限公司 | Antibacterial, mildewproof and antiviral oxidized stainless steel and preparation method thereof |
| CN112160007A (en) * | 2020-09-25 | 2021-01-01 | 同曦集团有限公司 | Antibacterial, mildewproof and antiviral electrophoresis stainless steel and preparation method thereof |
| CN112160001B (en) * | 2020-09-25 | 2021-07-27 | 同曦集团有限公司 | Antibacterial, mildewproof and antiviral oxidized stainless steel and preparation method thereof |
| CN112160007B (en) * | 2020-09-25 | 2022-02-08 | 同曦集团有限公司 | Antibacterial, mildewproof and antiviral electrophoresis stainless steel and preparation method thereof |
| CN112522773A (en) * | 2020-11-04 | 2021-03-19 | 东南大学 | Preparation method of stainless steel with antibacterial surface |
| CN112522773B (en) * | 2020-11-04 | 2022-01-28 | 东南大学 | Preparation method of stainless steel with antibacterial surface |
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| Publication number | Publication date |
|---|---|
| WO2011079784A1 (en) | 2011-07-07 |
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