CN106521501A - Brass alloy with macro-hole, micron-hole and nano-hole hierarchical hole structure and application thereof - Google Patents
Brass alloy with macro-hole, micron-hole and nano-hole hierarchical hole structure and application thereof Download PDFInfo
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- CN106521501A CN106521501A CN201611101258.6A CN201611101258A CN106521501A CN 106521501 A CN106521501 A CN 106521501A CN 201611101258 A CN201611101258 A CN 201611101258A CN 106521501 A CN106521501 A CN 106521501A
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F1/00—Etching metallic material by chemical means
- C23F1/02—Local etching
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F1/00—Etching metallic material by chemical means
- C23F1/10—Etching compositions
- C23F1/14—Aqueous compositions
- C23F1/16—Acidic compositions
- C23F1/18—Acidic compositions for etching copper or alloys thereof
Abstract
The invention relates to a brass alloy with a macro-hole, micron-hole and nano-hole hierarchical hole structure and application thereof. The alloy is prepared through the following method including the following steps that (1) a via hole array perpendicular to the surface is formed on a brass cylinder through processing by means of a numerical control processing technology, and then the processed brass cylinder is cleaned and dried; and (2) the obtained multi-hole brass alloy cylinder with the via hole array in the first step is soaked in a nitric acid solution with the mass concentration being 4.5%-6.5%, de-alloying treatment is performed for 10-30 minutes at the temperature of 35-40 DEG C, and the brass alloy with the macro-hole, micron-hole and nano-hole hierarchical hole structure is obtained after cleaning and drying. According to the brass alloy with the macro-hole, micron-hole and nano-hole hierarchical hole structure and the application thereof, the material porosity and specific surface area are increased, and meanwhile, the compression performance is still kept at high level. The fatality rate of escherichia coli and staphylococcus aureus can reach 100% to the maximum degree.
Description
Technical field
Technical scheme is related to a kind of preparation of brass alloys, specifically it is a kind of have grand hole-micron openings-
The brass alloys of nano-pore hierarchical porous structure and its application.
Background technology
Brass alloys are with copper, zinc element as major components.Pyrite has preferable mechanical performance, and relatively low cost is wide
General to be applied to the fields such as coin, medal, shell case, ironware, pyrite also has certain corrosion resistance and antibiotic property.Wherein antibacterial
Property refer to that certain material within a certain period of time, can make the growth of certain micro-organisms or breeding be maintained at necessary energy below horizontal
Power.Therefore it is widely used in pyrite supply and discharge water pipe in daily life and correlated parts.In such applications, faucet goes out
The technical finesse at the mouth of a river is healthy closely related with people.Some mushrooms and impurity are had in domestic water generally, in faucet
If outlet is not added with proper treatment, more antibacterials will be bred in water outlet, these antibacterials are gone out by new current, to people
Health generate threat.
In prior art, 104195600 A of CN disclose a kind of preparation method of antibacterial composite material, by aluminum
The zinc-plated process of material surface electro-deposition, its matrix surface define the zinc layers that a layer thickness is 0.5～5 μm, and its antibiotic rate is higher than
95%.In the method, single zinc element can only suppress limited strain, and electro-deposition techniques power consumption expense energy as coating, raw
Produce relatively costly.Paper Advances in Materials Science and Engineering 2013, Article ID
608350 disclose a kind of Rhizoma Nelumbinis shape Porous Cu with antibiotic property, and research shows the antibiotic property of the Porous Cu with material specific surface area
Increase and increase, and the Durability of antimicrobial effect of Rhizoma Nelumbinis shape Porous Cu be higher than non-porous copper.Its mainly by hydrogen pressurization, induction melting and
The method of directional solidification and be obtained, preparation process is more complicated, increased process cycle, and the task equipment high cost for using,
Increase the burden of enterprise.103343253 B of CN disclose a kind of method for preparing nano porous copper, fast by smelting
De- alloy technology of quenching prepares nano-porous materials, but the size that the method prepares Cu-Zr (- Al) amorphous ribbon is less,
It is also what is acquired a certain degree of difficulty to prepare in the prior art large block amorphous.And after de- alloy treatment sample is frangible lacks certain machinery
Performance, it is impossible to independently use as structural material.
The content of the invention
The technical problem to be solved is：There is provided a kind of with grand hole-micron openings-nano-pore hierarchical porous structure
Brass alloys and its application.Computerized Numerical Control processing technology and de- alloy technology are conjointly employed in brass alloys by the method, have been obtained one
Plant the multi-stage porous pyrite of grand hole-micron openings-nano-pore structure, the method for drilling simple economy.By two kinds of antiseptic elements knots of Cu, Zn
Conjunction is applied to antibacterial, expand can antibacterial kind scope.The porous brass alloys of preparation not only increase the specific surface area of matrix,
And its compression performance increased the antibiotic property of brass alloys without significantly decay on the premise of higher force performance is kept.Solution
Determine prior art device high cost, complex process, long the production cycle, sample lack mechanical integrity, antibacterial strain is single
Shortcoming.
The technical scheme is that：
A kind of brass alloys with grand hole-micron openings-nano-pore hierarchical porous structure, the alloy prepared by following method and
Into comprising the following steps：
The first step, prepares the grand hole of brass alloys
The via-hole array vertical with surface is processed on brass alloys cylinder using Computerized Numerical Control processing technology；Then it is which is clear
Insert after washing in vacuum drying oven and be dried；
Wherein, the composition of described brass alloys includes copper and zinc, and it is 39- that wherein Zn accounts for the percentage ratio of alloy gross mass
41%；In described via-hole array, aperture is 0.5～2.0mm, and hole is around cylindrical center in rotation array distribution, same to an array
On ring, 0.5 times of aperture≤adjacent holes Distances Between Neighboring Edge Points≤1.0 times aperture, on adjacent array ring, 0.55 times of aperture≤adjacent holes
Distances Between Neighboring Edge Points≤1.3 times aperture；
Second step, prepares the micron-nanometer hole of brass alloys
Will the porous brass alloys cylinder with via-hole array obtained in the first step be immersed in mass concentration for 4.5%～
In 6.5% salpeter solution, de- alloy treatment 10min～30min is carried out at 35 DEG C～40 DEG C, then again successively 0.1M's
Sodium hydroxide solution, dehydrated alcohol and ultra-pure water are cleaned, and obtain many with grand hole-micron openings-nano-pore after being then dried
The brass alloys of level pore structure.
Described brass alloys cylinder is preferably 8～16mm of diameter, 4～8mm of height.
The application of the described brass alloys with grand hole-micron openings-nano-pore hierarchical porous structure, for antibacterial.
Described bacterium is preferably one or two in escherichia coli and golden yellow Fructus Vitis viniferae bacillus.
A kind of preparation method of above-mentioned antibiotic property porous brass alloys, raw material used and equipment are by known way
Footpath obtains, and operating procedure used is that those skilled in the art can grasp.
The invention has the beneficial effects as follows：It is a kind of good material of anti-microbial property that the present invention has the brass alloys of multi-stage porous
Material, Cu and Zn can suppress different strains respectively, and the two is improved with reference to antibacterial effect, and antibacterial species increases.To Cu-
41wt.%Zn (impurity<0.1wt.%) brass alloys carry out de- alloy treatment, can be many by taking off the adjustment control of alloy parameter
The size in level hole.In de- alloy process, for α phases, β phase is more perishable in brass alloys, and formation is by growing
The surface micrometre-grade loose structure of strip α phase compositions.With the prolongation of de- alloy time, the hole of micro-meter scale loose structure is more
It is deep.While generation β phases are filtered, also there is filtering for Zn elements in α phases and β phases itself, form nanoscale loose structure.Most
Multi-stage porous brass alloys are built into eventually, improve the specific surface area and anti-microbial property of material.It is embodied in：
(1) preparation method of a kind of antibiotic property porous pyrite of the invention, brass alloys contain two kinds of elements of copper and zinc, do not contain
Noble metal and rare earth element, composition are simple, with low cost；
(2) preparation method of a kind of antibiotic property porous pyrite of the invention, alloy are prepared by digital control processing and de- alloy
Technology, it is simple to operate, equipment complexity is reduced, process cycle is shortened, energy expenditure is reduced；
(3) preparation method of a kind of antibiotic property porous pyrite of the invention, is increasing the same of material porosity and specific surface area
When compression performance remain at higher level, can use as structural material.It is compared with the material of non-porous, many in the present invention
The specific surface area of level Porous materials improves 4000～6000 times, and porosity improves 2000～3000 times, exactly such surface
Structure makes the surprising height of fatality rate of the material to antibacterial.On the premise of so high specific surface area and porosity is reached, material
Compression performance there is no the decline of the order of magnitude, this entirely different with the de- alloy of Traditional bandoleer (after the de- alloy of band very
Crisp, slightly stress is broken, it is impossible to be continuing with as structural material), during experiment finds the present invention, material takes off its compression after alloy
Performance is reduced to more than the 78% of original material (up to more than 98%), embodies good mechanical integrity, is greatly carrying
The mechanical property of material on the premise of the antibiotic property of high material, is not affected, enables material wide in the multiple fields that people live
General use.
(4) the multi-stage porous brass alloys that obtain of the present invention to the fatality rate of escherichia coli and golden yellow Fructus Vitis viniferae bacillus very
Height, compared with the material of non-porous, makes the fatality rate parameter bring up to more than 98.5% (up to from 80% or so
100%).
Description of the drawings
The present invention is further described with reference to the accompanying drawings and examples.
Structural representations of the Fig. 1 for multi-stage porous brass alloys, wherein, Fig. 1 a are whole structure figure, and Fig. 1 b are top view, are schemed
1c is microgram.
Surface SEM shape appearance figures of the Fig. 2 for multi-stage porous brass alloys obtained in embodiment 1.
SEM sectional views of the Fig. 3 for multi-stage porous brass alloys obtained in embodiment 1.
Fig. 4 is the compressive stress strain curve figure of the brass alloys without de- alloy treatment.
Compressive stress strain curve figures of the Fig. 5 for multi-stage porous brass alloys obtained in embodiment 1.
Grand pore size distribution schematic diagrams of the Fig. 6 for multi-stage porous brass alloys obtained in embodiment 2.
SEM shape appearance figures of the Fig. 7 for multi-stage porous brass alloys obtained in embodiment 2.
Grand pore size distribution schematic diagrams of the Fig. 8 for multi-stage porous brass alloys obtained in embodiment 3.
SEM shape appearance figures of the Fig. 9 for multi-stage porous brass alloys obtained in embodiment 3.
Specific embodiment
Embodiment 1
The first step, prepares the grand hole of brass alloys
Using Computerized Numerical Control processing technology by the Cu-41wt.%Zn (impurity of a diameter of 10.0mm<0.1wt.%) brass alloy rod
The small column of high 5.0mm is processed into, and then the through hole that (milling from top to bottom) goes out diameter 1.0mm is vertically processed on small column surface
Array, its mesopore around cylindrical center in rotation array distribution, with an array ring, adjacent holes Distances Between Neighboring Edge Points, by internal ring to
Outer shroud is about 1.0mm, 0.8mm successively；On adjacent array ring, the Distances Between Neighboring Edge Points of adjacent holes are about 1.3mm, and Fig. 1 a show and add
Whole structure figure after work, Fig. 1 b show the distribution schematic diagram in grand hole, altogether 16 holes.By obtained sample successively with third
Ketone, dehydrated alcohol and ultra-pure water are cleaned, and are then put in vacuum drying oven, are dried 2h with 60 DEG C.
Second step, prepares the micron-nanometer hole of brass alloys
Porous pyrite cylinder with grand hole array obtained in the first step is immersed in into the nitric acid that mass concentration is 5% molten
De- alloy treatment is carried out in liquid, this process is carried out at 37 DEG C, it is 20min to take off alloy time control.After de- alloy treatment, pyrite
Cylinder forms the hierarchical porous structure with grand hole-micron openings-nano-pore, is its structural representation as shown in fig. 1b and fig. lc.Will
Obtained brass alloys are cleaned with the sodium hydroxide solution of 0.1M, ethanol and ultra-pure water successively, are then placed in vacuum and are done
Dry case, is dried 2h with 60 DEG C.
Fig. 2 is the SEM patterns on multi-stage porous brass alloys surface obtained in the present embodiment, is clear that protrusion by figure
Strip α distributed mutuallies on the surface of matrix, the β phases relevant position being corroded forms etch pit, constitutes micrometer level porous knot
Structure, and intensive nanometer porous structure can be seen in α phases and β phases.Confirm that the present embodiment has been obtained with multi-stage porous
Brass alloys.Fig. 3 is the sectional view of de- alloy treatment 20min multi-stage porous brass alloys, and as seen from the figure, sample Jing 20min are de- to be closed
Jin Hou, forms internal Wei Tuo alloys area, the thin area of intermediate porous, and three part of porous surface area, and it is still right not take off alloyed region
Entirety plays a part of substrate support.Fig. 4 is the compressive stress strain curve figure of the brass alloys without de- alloy treatment, Fig. 5
It is the compressive stress strain curve figure of the multi-stage porous brass alloys of de- alloy treatment 20min.Knowable to relatively Fig. 4 and Fig. 5, without
The comprcssive strength of the brass alloys after de- alloy treatment and de- alloy 20min is respectively 616.3MPa and 607.9MPa, and strain is equal
More than 30%, it was demonstrated that prepared multi-stage porous brass alloys still have good mechanical performance after corrosion.
Antibiotic property experimentation is carried out with multi-stage porous brass alloys obtained in the present embodiment as follows：
Sample prepared by second step is placed in cleaned glass ware, respectively by 30 μ L concentration 105The large intestine bar of cfu/mL
The bacterium solution of bacterium and golden yellow Fructus Vitis viniferae bacillus is dripped on sample, covers bacterium solution with the sealed membrane for sterilizing, and sample is placed in mycete training
Cultivated in foster case, cultivation temperature is 37 DEG C, relative humidity is more than 90%, and the time is 24h.Bacterium solution accompanying by sample is washed
Under, it is evenly coated on agar plate, agar plate is placed in mold incubator and is cultivated, temperature is 37 DEG C, relative humidity
More than 90%, the time is 24h.Clump count on statistics agar plate.As a result show escherichia coli with golden yellow Fructus Vitis viniferae bacillus
Fatality rate is 100%.
Embodiment 2
The first step, prepares the grand hole of brass alloys
Using Computerized Numerical Control processing technology by the Cu-39wt.%Zn (impurity of a diameter of 8.0mm<0.1wt.%) brass alloy rod
The small column of high 5.0mm is processed into, and then the through hole that (milling from top to bottom) goes out diameter 0.5mm is vertically processed on small column surface
Array, its mesopore around cylindrical center in rotation array distribution, with an array ring, adjacent holes Distances Between Neighboring Edge Points, by internal ring to
Outer shroud is about 0.5mm, 0.3mm, 0.4mm, 0.5mm successively；On adjacent array ring, adjacent holes Distances Between Neighboring Edge Points, by internal ring to outside
Ring is each about 0.3mm, and the distribution schematic diagram in grand hole is shown shown in Fig. 6, altogether 52 holes.By obtained sample successively with third
Ketone, dehydrated alcohol and ultra-pure water are cleaned, and are then put in vacuum drying oven, are dried 2h with 60 DEG C.
Second step, prepares the micron-nanometer hole of brass alloys
Porous pyrite cylinder with grand hole array obtained in the first step is immersed in into the nitric acid that mass concentration is 4.5%
De- alloy treatment is carried out in solution, this process is carried out at 35 DEG C, it is 10min to take off alloy time control.It is after de- alloy treatment, yellow
Bronze cylinders form the hierarchical porous structure with grand hole-micron openings-nano-pore.By obtained brass alloys successively with 0.1M's
Sodium hydroxide solution, ethanol and ultra-pure water are cleaned, and are then placed in vacuum drying oven, are dried 2h with 60 DEG C.Fig. 7 is this enforcement
The SEM patterns of multi-stage porous brass alloys obtained in example, can be observed alloy surface corrosion by figure shallower, define micro-meter scale and
The compound porous structure of nanoscale.The porous chalocopyrite structure comprcssive strength drops to 610.8MPa, strain rate more than 30%, still
Outstanding mechanical performance has been shown so.
Antibiotic property experimentation is carried out with multi-stage porous brass alloys obtained in the present embodiment as follows：
Sample prepared by second step is placed in cleaned glass ware, respectively by 30 μ L concentration 105The large intestine bar of cfu/mL
The bacterium solution of bacterium and golden yellow Fructus Vitis viniferae bacillus is dripped on sample, covers bacterium solution with the sealed membrane for sterilizing, and sample is placed in mycete training
Cultivated in foster case, cultivation temperature is 37 DEG C, relative humidity is more than 90%, and the time is 24h.Bacterium solution accompanying by sample is washed
Under, it is evenly coated on agar plate, agar plate is placed in mold incubator and is cultivated, temperature is 37 DEG C, relative humidity
More than 90%, the time is 24h.Clump count on statistics agar plate.As a result show escherichia coli with golden yellow Fructus Vitis viniferae bacillus
Fatality rate is respectively 99.0% and 98.5%.
Embodiment 3
The first step, prepares the grand hole of brass alloys
Using Computerized Numerical Control processing technology by the Cu-40wt.%Zn (impurity of a diameter of 16.0mm<0.1wt.%) brass alloy rod
The small column of high 8.0mm is processed into, and then the through hole that (milling from top to bottom) goes out diameter 2.0mm is vertically processed on small column surface
Array, its mesopore around cylindrical center in rotation array distribution, with an array ring, adjacent holes Distances Between Neighboring Edge Points, by internal ring to
Outer shroud is about 2.0mm, 1.0mm successively；On adjacent array ring, the Distances Between Neighboring Edge Points of adjacent holes are about 1.1mm, show shown in Fig. 8
Go out the distribution schematic diagram in grand hole, altogether 16 holes.Obtained sample is carried out clearly with acetone, dehydrated alcohol and ultra-pure water successively
Wash, be then put in vacuum drying oven, 2h is dried with 60 DEG C.
Second step, prepares the micron-nanometer hole of brass alloys
Porous pyrite cylinder with grand hole array obtained in the first step is immersed in into the nitric acid that mass concentration is 6.5%
De- alloy treatment is carried out in solution, this process is carried out at 40 DEG C, it is 30min to take off alloy time control.It is after de- alloy treatment, yellow
Bronze cylinders form the hierarchical porous structure with grand hole-micron openings-nano-pore.By obtained brass alloys successively with 0.1M's
Sodium hydroxide solution, ethanol and ultra-pure water are cleaned, and are then placed in vacuum drying oven, are dried 2h with 60 DEG C.Fig. 9 is this enforcement
The SEM patterns of multi-stage porous brass alloys obtained in example, can be observed alloy surface corrosion by figure relatively deep, define micro-meter scale and
The loose structure of nanoscale.The porous chalocopyrite structure comprcssive strength drops to 480.9MPa, and strain rate is still opened up more than 27%
Outstanding mechanical performance is revealed.
Antibiotic property experimentation is carried out with multi-stage porous brass alloys obtained in the present embodiment as follows：
Sample prepared by second step is placed in cleaned glass ware, respectively by 30 μ L concentration 105The large intestine bar of cfu/mL
The bacterium solution of bacterium and golden yellow Fructus Vitis viniferae bacillus is dripped on sample, covers bacterium solution with the sealed membrane for sterilizing, and sample is placed in mycete training
Cultivated in foster case, cultivation temperature is 37 DEG C, relative humidity is more than 90%, and the time is 24h.Bacterium solution accompanying by sample is washed
Under, it is evenly coated on agar plate, agar plate is placed in mold incubator and is cultivated, temperature is 37 DEG C, relative humidity
More than 90%, the time is 24h.Clump count on statistics agar plate.As a result show escherichia coli with golden yellow Fructus Vitis viniferae bacillus
Fatality rate is 100%.
Comparative example 1：It is corrosive liquid from the hydrofluoric acid solution of concentration 5%, other conditions observe sample with embodiment 1
Surface microscopic topographic, alloy do not occur significantly to take off alloy phenomenon, do not obtain hierarchical porous structure.Its anti-microbial property test result is
The fatality rate of escherichia coli and golden yellow Fructus Vitis viniferae bacillus is respectively 86% and 83%.
Comparative example 2：It is corrosive liquid from the sulfuric acid solution of concentration 5%, other conditions are with embodiment 1, the table of observation sample
Face microscopic appearance, alloy do not occur significantly to take off alloy phenomenon, do not obtain hierarchical porous structure.Its anti-microbial property test result is big
The fatality rate of enterobacteria and golden yellow Fructus Vitis viniferae bacillus is respectively 84% and 82%.
Comparative example 3：It is corrosive liquid from the phosphoric acid solution of concentration 5%, other conditions are with embodiment 1, the table of observation sample
Face microscopic appearance, alloy do not occur significantly to take off alloy phenomenon, do not obtain hierarchical porous structure.Its anti-microbial property test result is big
The fatality rate of enterobacteria and golden yellow Fructus Vitis viniferae bacillus is respectively 85% and 82%.
Comparative example 4：It is corrosive liquid from the salpeter solution of concentration 7%, other conditions observe the micro- of sample with embodiment 1
Pattern is seen, alloy surface seriously corroded does not obtain hierarchical porous structure, and material mechanical performance decay is serious, and compressive strength is near
200MPa or so.Its anti-microbial property test result is that the fatality rate of escherichia coli and golden yellow Fructus Vitis viniferae bacillus is respectively 90% He
92%.
Comparative example 5：It is corrosive liquid from the salpeter solution of concentration 4%, other conditions observe the micro- of sample with embodiment 1
Pattern is seen, alloy surface corrosion is very slight, does not obtain hierarchical porous structure.Its anti-microbial property test result is escherichia coli and gold
The fatality rate of yellow Fructus Vitis viniferae bacillus is respectively 87% and 86%.
Above example and comparative example illustrate that a kind of preparation method of antibiotic property porous pyrite is by constantly attempting rotten
Composition, concentration and other synthesis conditions of liquid, strict control preparation condition and de- alloying technology are lost, Jing puts into practice for several times, finally opens
What is sent a kind of can keep material mechanical integrity, the multi-stage porous brass alloys with good antibiotic property.
Unaccomplished matter of the present invention is known technology.
Claims (4)
1. a kind of brass alloys with grand hole-micron openings-nano-pore hierarchical porous structure, it is characterized by the alloy is by following side
Method is prepared from, and comprises the following steps：
The first step, prepares the grand hole of brass alloys
The via-hole array vertical with surface is processed on brass alloys cylinder using Computerized Numerical Control processing technology；Then after being cleaned
Insert in vacuum drying oven and be dried；
Wherein, the composition of described brass alloys includes copper and zinc, and it is 39-41% that wherein Zn accounts for the percentage ratio of alloy gross mass；Institute
In the via-hole array stated, aperture is 0.5 ~ 2.0 mm, and hole is distributed in rotation array around cylindrical center；With on an array ring, 0.5
Times aperture≤adjacent holes Distances Between Neighboring Edge Points≤1.0 times aperture, on adjacent array ring, between the edge of 0.55 times of aperture≤adjacent holes
Away from≤1.3 times of apertures；
Second step, prepares the micron-nanometer hole of brass alloys
Porous brass alloys cylinder with via-hole array obtained in the first step is immersed in into the nitre that mass concentration is 4.5% ~ 6.5%
In acid solution, 10 min ~ 30 min of de- alloy treatment is carried out at 35 DEG C ~ 40 DEG C, then again successively in the sodium hydroxide of 0.1M
Solution, dehydrated alcohol and ultra-pure water are cleaned, and are obtained with grand hole-micron openings-nano-pore hierarchical porous structure after being then dried
Brass alloys.
2. there are the brass alloys of grand hole-micron openings-nano-pore hierarchical porous structure as claimed in claim 1, it is characterized by institute
The brass alloys cylinder stated is preferably 8 ~ 16mm of diameter, 4 ~ 8mm of height.
3. the application of the brass alloys with grand hole-micron openings-nano-pore hierarchical porous structure as claimed in claim 1, which is special
Levy is for antibacterial.
4. the application of the brass alloys with grand hole-micron openings-nano-pore hierarchical porous structure as claimed in claim 1, which is special
It is one or two in escherichia coli and golden yellow Fructus Vitis viniferae bacillus to levy as the bacterium.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107312983A (en) * | 2017-07-18 | 2017-11-03 | 河北工业大学 | A kind of copper silver-colored zinc alloy with micro-nano pore space structure and preparation method and application |
| CN108265192A (en) * | 2018-01-30 | 2018-07-10 | 河北工业大学 | A kind of respirable laminar nano Porous Cu silver composite material and preparation method thereof |
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| CN105420532A (en) * | 2015-11-19 | 2016-03-23 | 辽宁石油化工大学 | Metal-hole antibacterial metallic silver at nanoscale and preparation method of metallic silver |
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| CN107312983A (en) * | 2017-07-18 | 2017-11-03 | 河北工业大学 | A kind of copper silver-colored zinc alloy with micro-nano pore space structure and preparation method and application |
| CN107312983B (en) * | 2017-07-18 | 2018-08-17 | 河北工业大学 | A kind of copper silver-colored zinc alloy and the preparation method and application thereof with micro-nano pore space structure |
| CN108265192A (en) * | 2018-01-30 | 2018-07-10 | 河北工业大学 | A kind of respirable laminar nano Porous Cu silver composite material and preparation method thereof |
| CN108265192B (en) * | 2018-01-30 | 2019-08-09 | 河北工业大学 | A kind of respirable laminar nano Porous Cu silver composite material and preparation method thereof |
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