CN201268722Y - Al-Zn pseudo alloy protecting film - Google Patents
Al-Zn pseudo alloy protecting film Download PDFInfo
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- CN201268722Y CN201268722Y CNU2008201529794U CN200820152979U CN201268722Y CN 201268722 Y CN201268722 Y CN 201268722Y CN U2008201529794 U CNU2008201529794 U CN U2008201529794U CN 200820152979 U CN200820152979 U CN 200820152979U CN 201268722 Y CN201268722 Y CN 201268722Y
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- alloy
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- Prevention Of Electric Corrosion (AREA)
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Abstract
The utility model relates to a zinc aluminum pseudo-alloy protecting film for a bridge, shipping, an oil storage tank, an offshore platform and other offshore steel structures, which belongs to the technical field of a corrosion prevention product of a steel member. The zinc aluminum pseudo-alloy protecting film comprises a layer-shaped structure formed by a bottom layer and a surface layer, the one-layer protecting film is sequentially provided with a steel base body, a zinc aluminum pseudo-alloy bottom layer and a zinc aluminum pseudo-alloy surface layer from bottom to top to combine a combined type integral structure of the zinc aluminum pseudo-alloy protecting film, and a compact aluminium sesquioxide oxide film is arranged on the external part of the zinc aluminum pseudo-alloy protecting film. The utility model mainly solves the relative technique problems that how to greatly enhance the corrosion prevention capability of a coating, and the like. The zinc aluminum pseudo-alloy protecting film not only has the electrochemistry property of zinc, but also simultaneously has the rigidity and the compactness of aluminium, thereby further enhancing the corrosion prevention. Besides, the utility model can further prolong the service life of the steel member because of the large combining force of the zinc aluminum pseudo-alloy protecting film and the steel base body which are combined in a mechanical way, and the like.
Description
Technical field
The utility model relates to a kind of zinc aluminum pseudo-alloy protecting film of steel member aseptic production, especially refer to a kind of aseptic production that is mainly used in bridge, boats and ships, petroleum storage tank, marine platform and other ocean steel constructions, in order to reduce the corrosion of steel member, be a kind of steel member product innovation in work-ing life that prolongs.
Background technology
At present, various aseptic production that is used for the steel member is arranged on the market, various in style, purposes differs, and each has something to recommend him, as:
The spraying zinc-rich paint: zinc powder is bonding continuous by binding agent and steel substrate, and the galvanic protection effect is provided, but its " annode area/cathode area " less than 1, the galvanic protection weak effect.Zinc coating thickness is thinner, weakened in the galvanic protection effect short period of time, and ineffective gradually.New development is to change zinc powder into sheet, also fails to eliminate its basic weakness.
Earlier aluminium-plated behind the spray zinc: the zinc layer directly contacts with iron and steel, and aluminium lamination is attached to above the zinc layer, and the laminate structure that forms a kind of iron and steel-zinc-aluminium can obtain between zinc layer and the iron and steel cohesive force preferably, protects also relatively good.But need be divided into two-layer spraying.Complex process cost height.
The spray fine aluminium: the sprayed aluminum layer directly contacts with iron and steel, and the sprayed aluminum layer should not be too thick, because pitting corrosion and foaming phenomenon appear in thick aluminum coating easily; reduce the protection effect of coating; aluminum coating is had relatively high expectations for the surface cleanliness of base material, generally be difficult for accomplishing, and sticking power is not high.
The spray zinc aluminium false alloy: there is 13N/mm in Shenyang University of Technology etc. with a pure zinc silk and a fine aluminium silk, the pseudo-alloy of electric arc spraying
2Cohesive force, spray voltage is used 150V, and the electric pressure of electric arc atomization reaches 0.6MPa, but does not further improve the composition and the structure of coating, does not have to utilize the material that is coated with up to obtain best protective value.
Summary of the invention
In order to overcome above-mentioned weak point, main purpose of the present utility model aims to provide a kind of zinc aluminum pseudo-alloy protecting film that gets by high-power arc spraying, and this product neither is subjected to the influence of element structure, has both had than higher sticking power; The extexine of high aluminium content and high aluminium sesquioxide content is arranged again, is the zinc aluminum pseudo-alloy protecting film that one deck has the long life anti corrosion function.
The technical problems to be solved in the utility model is: solve combination and sticking power between the matrix and the hardness problem of himself between the protective film laminate structure; Solve zinc, aluminium is 50/50 o'clock (being that the zinc-aluminium weight ratio is 72.6/27.4) in volume ratio, the aluminium composition is enriched in the outermost layer of protective film, (volume ratio aluminium 〉=70%, weight ratio 〉=43%), and how there is a large amount of aluminium to exist, how about can increases substantially relevant technologies problems such as coating anti-corrosion capability with the aluminium sesquioxide form.
The technical scheme that its technical problem that solves the utility model adopts is: this product comprises: the laminate structure that bottom and top layer constitute; one stratiform protective film is provided with the structure that steel substrate, bottom zinc aluminium false alloy and top layer zinc aluminium false alloy are combined into a combined integrate pseudo-alloy protecting film from bottom to top successively; and the aluminium sesquioxide protective membrane that one deck densification is arranged in this pseudo-alloy protecting film outside, wherein:
Mechanically be connected between bottom zinc aluminium false alloy and the top layer zinc aluminium false alloy, the bottom zinc aluminium false alloy combines the back and is sprayed on the surface of steel substrate with the form of mechanical mixture with the top layer zinc aluminium false alloy, and bonds together.
The bottom zinc aluminium false alloy of described zinc aluminum pseudo-alloy protecting film and top layer zinc aluminium false alloy are zinc, aluminium material is formed, and contain the syndeton of the two oxide compound and the two alloy.
The beneficial effects of the utility model are: because zinc in this zinc aluminum pseudo-alloy protecting film and aluminium mixing with the form machinery of pure zinc, fine aluminium, aluminium zinc and both oxide compounds, protective film has physics and the chemical property of the two concurrently, the chemical property of existing zinc has the hardness and the compactness of aluminium again simultaneously, thereby the corrosion resistance nature of this protective film is further enhanced; In addition protective film mechanically and the bonding force between the matrix strong; This protective film is the most surperficial the aluminium sesquioxide of formation zone of oxidation, and Al
2O
3Play the plug-hole effect, reduce the voidage on protective film surface, form fine and closely woven stratified protective metal film, make water and oxygen be difficult to see through, have advantages such as further prolongation steel member work-ing life.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Accompanying drawing 1 is a laminate structure synoptic diagram of the present utility model;
Accompanying drawing 2 is composition scanning curve figure of the present utility model;
Label declaration in the accompanying drawing:
1---steel substrate;
2---the bottom zinc aluminium false alloy;
3---the top layer zinc aluminium false alloy;
Embodiment
See also shown in the accompanying drawing 1,2, the utility model is a kind of zinc aluminium false alloy protection against corrosion protective film, by high-power arc spraying zinc, aluminium wire, sprays to the zinc aluminum pseudo-alloy protecting film that matrix surface obtains.
The utility model comprises: the laminate structure that bottom and top layer constitute; one stratiform protective film is provided with the structure that steel substrate 1, bottom zinc aluminium false alloy 2 and top layer zinc aluminium false alloy 3 are combined into a combined integrate pseudo-alloy protecting film from bottom to top successively; and the aluminium sesquioxide protective membrane that one deck densification is arranged in this pseudo-alloy protecting film outside, wherein:
Mechanically be connected between bottom zinc aluminium false alloy 2 and the top layer zinc aluminium false alloy 3, both are sprayed on the surface of steel substrate 1 with the form of mechanical mixture bottom zinc aluminium false alloy 2 and top layer zinc aluminium false alloy 3, and bond together.
The bottom zinc aluminium false alloy 2 of described zinc aluminum pseudo-alloy protecting film is formed for the zinc aluminium false alloy material with top layer zinc aluminium false alloy 3, and contains the syndeton of the two oxide compound and the two alloy.
The pseudo-alloy protecting film outside surface of described zinc aluminum pseudo-alloy protecting film has high aluminum content, and its aluminum content is higher than the average aluminum content of pseudo-alloy protecting film.
The pseudo-alloy protecting film internal surface of described zinc aluminum pseudo-alloy protecting film has high zinc content, and with steel substrate 1 be the direct adhesive structure of spraying.
Principle of work of the present utility model and technical characterstic:
This product passes through 1. large power electric arc, and electric current reaches 400A; Electric pressure atomizes〉0.7Mpa; 2. secondary high-pressure hot gas, because arc temperature can reach 6000 ℃, can be through hot gas with aluminium by being oxidized to aluminium sesquioxide.Because power is big, the zinc-aluminium particle can be broken up, realize liquid bonding.Can draw the rear surface composition with spectroscopic analysis, measure the aluminium composition greater than average content and can measure the oxide compound total content, prove that aluminium sesquioxide generates in a large number in spraying process.
When spraying, aluminium and zinc fusion → primary atomization → secondary-atomizing → be ejected into steel surface, form a kind of zinc aluminum pseudo-alloy protecting film.This protective film is made up of zinc, aluminium, a spot of aluminium zinc and a large amount of aluminum oxide etc., mainly with laminate structure: the bottom zinc aluminium false alloy---and the structure of top layer zinc aluminium false alloy constitutes.Both are sprayed on steel surface with the form of mechanical mixture zinc, aluminium; and contain its oxide compound and the alloy of the two on a small quantity; there is higher zinc content directly to contact at this protective film front surface, and the aluminium sesquioxide protective membrane of one deck densification is arranged at the protective film outermost with iron and steel.The laminate structure of this protective film is with liquid state bonding, mechanical system combination, bonding strength height.
Metallic aluminium is under the oxygen enrichment state when spraying, and outermost aluminium is oxidized easily, forms aluminium sesquioxide oxygen protective layer, and Al
2O
3Can play the plug-hole effect, reduce the voidage on protective film surface, make water and oxygen be difficult to see through, form fine and closely woven stratified protective metal film, and it be very good to cause corrosion resistance nature.
Metallic aluminium and oxide compound thereof are at the outermost layer of protective film; play the effect of protection nexine zinc and zinc-aluminium layer, over oxidation and a large amount of stripping to prevent metallic zinc stop water and oxygen to see through simultaneously; reach the long-term rust-proof effect of metallic zinc, improve the corrosion resistance nature of protective film.
See also shown in the accompanying drawing 1, the structure of zinc aluminium false alloy is the mechanical mixture of zinc and two kinds of materials of aluminium, contains a spot of the two alloy sometimes.Its metallographic structure is made up of pure zinc phase, fine aluminium phase, some aluminium zincs phases and oxide compound; Steel substrate is 1 among Fig. 1, and the bottom zinc aluminium false alloy is 2, and the top layer zinc aluminium false alloy is 3; Wherein mechanically combine between 2 and 3, and the mechanical bond power of zinc aluminum pseudo-alloy protecting film and steel substrate 1 is strong.
Fig. 1 is a laminate structure synoptic diagram of the present utility model, protective film constitutes with bottom protective film and top layer protective film, and the content of measuring the aluminium that draws the top layer zinc aluminium false alloy through statutory survey department wants high than average content, has improved the fraction of coverage of the aluminium on the zinc aluminium false alloy laminar surface; In addition, also contain the oxide compound of zinc and aluminium in the protective film, Al
2O
3Reach certain content and just couple together, form compact protective film, obstruct or minimizing medium pass through greatly, and the zinc layer is protected, and prolong the work-ing life of whole protection film, really reach the purpose to iron and steel basic unit long life anti corrosion.
By legal metrological service this protective film is measured, greater than average content, and can be measured aluminium sesquioxide content by aluminium composition in the composition of Fig. 2 data declaration zinc aluminium false alloy surface.
Rear surface of the present utility model is as follows with the electronic energy spectrum result of scan-probe analysis of components:
The electronic energy spectrum analytical results of pseudo-alloy coat surface composition
More than be rear surface analysis of components result of the present utility model, the second sum is that oxide aggregate and aluminium content sum reach 70.11% in the table.
Claims (1)
1, a kind of zinc aluminum pseudo-alloy protecting film; comprise: the laminate structure that bottom and top layer constitute; it is characterized in that: a stratiform protective film is provided with the structure that steel substrate (1), bottom zinc aluminium false alloy (2) and top layer zinc aluminium false alloy (3) are combined into a combined integrate pseudo-alloy protecting film from bottom to top successively; and the aluminium sesquioxide protective membrane that one deck densification is arranged in this pseudo-alloy protecting film outside, wherein:
Mechanically be connected between bottom zinc aluminium false alloy (2) and the top layer zinc aluminium false alloy (3), both combine bottom zinc aluminium false alloy (2) and top layer zinc aluminium false alloy (3) back and are sprayed on the surface of steel substrate (1) with the form of mechanical mixture, and bond together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201529794U CN201268722Y (en) | 2008-09-11 | 2008-09-11 | Al-Zn pseudo alloy protecting film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201529794U CN201268722Y (en) | 2008-09-11 | 2008-09-11 | Al-Zn pseudo alloy protecting film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201268722Y true CN201268722Y (en) | 2009-07-08 |
Family
ID=40841319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201529794U Ceased CN201268722Y (en) | 2008-09-11 | 2008-09-11 | Al-Zn pseudo alloy protecting film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201268722Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103373033A (en) * | 2012-04-17 | 2013-10-30 | 新兴铸管股份有限公司 | Zn-Al-Mg-RE pseudo-alloy coating and preparation method thereof |
-
2008
- 2008-09-11 CN CNU2008201529794U patent/CN201268722Y/en not_active Ceased
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103373033A (en) * | 2012-04-17 | 2013-10-30 | 新兴铸管股份有限公司 | Zn-Al-Mg-RE pseudo-alloy coating and preparation method thereof |
| CN103373033B (en) * | 2012-04-17 | 2016-03-30 | 新兴铸管股份有限公司 | Zn-Al-Mg-RE pseudo alloy coating and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C35 | Partial or whole invalidation of patent or utility model | ||
| IW01 | Full invalidation of patent right |
Decision date of declaring invalidation: 20100409 Decision number of declaring invalidation: 14643 Granted publication date: 20090708 |
|
| PP01 | Preservation of patent right |
Effective date of registration: 20121030 Granted publication date: 20090708 |
|
| RINS | Preservation of patent right or utility model and its discharge | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20131030 Granted publication date: 20090708 |
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| RINS | Preservation of patent right or utility model and its discharge |