CN106399895A - Zinc-copper-titanium alloy anticorrosive coating structure of steel structure - Google Patents
Zinc-copper-titanium alloy anticorrosive coating structure of steel structure Download PDFInfo
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- CN106399895A CN106399895A CN201610827881.3A CN201610827881A CN106399895A CN 106399895 A CN106399895 A CN 106399895A CN 201610827881 A CN201610827881 A CN 201610827881A CN 106399895 A CN106399895 A CN 106399895A
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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
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
- C23C4/06—Metallic material
- C23C4/08—Metallic material containing only metal elements
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Abstract
The invention discloses a zinc-copper-titanium alloy anticorrosive coating structure of a steel structure, and belongs to the technical field of steel structure corrosion protection. The coating structure is a zinc-copper-titanium alloy anticorrosive coating with thickness being 50 [mu]m to 260 [mu]m, which is formed by spraying zinc-copper-titanium alloy wires on the surface of steel structural matrix in an electric arc spraying mode; and each zinc-copper-titanium alloy wire consists of the following component in percentage by weight: less than or equal to 0.65% of Ti and Cu, and the balance zinc. The zinc-copper-titanium alloy anticorrosive coating structure has the beneficial effects that the formed zinc-copper-titanium alloy coating is compact, is low in porosity and is high in bonding strength with the matrix; the coating has self-sealing and self-repairing effects, so that corrosion resistance of the metal coating is improved; the zinc-copper-titanium alloy coating is low in electrode potential, is small in corrosion current density and has the trend of gradually retarding, so that the service life of the steel structure can be effectively prolonged to be 40-50 years; and the zinc-copper-titanium alloy anticorrosive coating structure can be widely applied to corrosion protection of the steel structure to reduce the life-cycle corrosion protection cost of the steel structure, and has a promotion prospect.
Description
Technical field
The present invention relates to a kind of anticorrosion of steel structure coating structure is and in particular to a kind of steel construction zinc-copper-titanium alloy corrosion-inhibiting coating
Structure, belongs to steel structure anti-corrosion technical field.
Background technology
According to statistics, about 700,000,000,000 dollars of the economic loss that the annual invar iron rot in the whole world causes, accounts for the global gross output value
2%.China as the most country of iron and steel output in the world, the iron and steel being corroded every year account for China's iron and steel annual production ten/
One, invar iron rot and loss about 50,000,000 RMB that causes.
Electric arc spraying is presently the most the long-life anti-corrosion method of conventional steel construction.Electric arc spraying for anti-corrosion purpose
Material mainly has Zn silk, Al silk and Zn-Al alloy silk.They mainly have three to the protection mechanism of ferrous materials：1. close every
From effect；2. acted on by the cathodic protection that coating material self sacrifice is realized；3. form the work that oxide-film plays passivation protection
With.But in actual application, also have the following disadvantages.
（1）The corrosion product of Zn coating is soluble, and can cause coating foaming, can reduce the combination of coating and steel substrate
Intensity, causes the corrosion-resistant life of coating to shorten.Additionally, in arc spray process, the zinc particles of high atomisation can be made to environment
Become severe contamination.The zinc oxide dust that particularly high atomisation is formed has very big toxicity, will make one after sucking on a small quantity
Sensation is dizzy, nausea, fever, sucks and results even in personnel death in a large number.
（2）Al coating structure is internal and coating surface forms thicker Al2O3Film, due to Al2O3Film conductivity is low, electrode
Current potential compared with mother metal just, does not have electro-chemical protection, and spot corrosion easily occurs.Metallic aluminium in the atomization of arc spray process camber
Ion and Al, Al of splashing2O3Powder, when dust reaches a certain amount of in atmosphere, runs into burning things which may cause a fire disaster, can explode rapidly
And burning, and the particle of in the air increases and also can cause severe contamination to environment.
（3）It is true that Zn-Al alloy coating easily occurs intercrystalline corrosion, metal coating perforation can be directly contributed, shorten anti-corrosion
The erosion time limit.Additionally, when Al is more than 10%, the intermetallic compound of fragility, silk material processing difficulties easily occur.
The up-to-date steel structure bridge to be widelyd popularize that gives out information in national communication portion, steel construction market capacity is larger.Therefore, carry
It is problem in urgent need to solve for the more preferable arc spraying coating of performance.
Content of the invention
It is an object of the invention to provide a kind of corrosion resistance is good, surface is magnificent excellent with anticorrosive paint binding ability
Steel construction zinc-copper-titanium alloy corrosion-inhibiting coating structure, the mechanical property of zinc-copper-titanium alloy coating of formation and electrochemical performance,
Anti-corrosion life can reach 40-50, can effectively extend the service life of steel construction, reduces the anti-corrosion one-tenth of steel construction life-cycle
This.
To achieve these goals, the steel construction zinc-copper-titanium alloy corrosion-inhibiting coating structure of the present invention is in steel construction matrix table
Face electric arc spraying zinc-copper-titanium alloy silk, forms zinc-copper-titanium alloy coating, the thickness of described zinc-copper-titanium alloy coating is 50 μm of -260 μ
m；Each component weight percentages of wherein zinc-copper-titanium alloy silk：Ti+Cu≤0.65%, balance of zinc.
According to practice of construction needs, the thickness of this zinc-copper-titanium alloy coating is preferably 80 μm -200 μm.
According to practice of construction needs, the thickness of this zinc-copper-titanium alloy coating is preferably 100 μm -160 μm.
After tested, electric arc spraying zinc-copper-titanium alloy coating electrode potential ＜ -1.015V in 3.5wt%NaCl solution, than pure
Zinc, allumen electrode potential lower；Soak different time in 3.5wt%NaCl solution, its corrosion electric current density is little and has
The trend gradually slowing down.
Using existing arc spraying technology, to reaching more than Sa3 level through blasting treatment cleannes, roughness reaches Rz60-
100 μm of steel structure surface electric arc spraying zinc-copper-titanium alloy silk, and zinc-copper-titanium alloy coating is carried out with adhesive force, porosity survey
Amount and resistance to neutral salt spray test, testing result is and substrate combinating strength >=6.5MPa, strong with the combination of heavy antisepsis painting layer
Degree is up to 12Mpa, the resistance to neutral salt spray test of coating porosity ＜ 2%, 2400h, metal coating surface redfree corrosion product, table
Face no foaming phenomena occurs.
Electric arc spraying zinc-copper-titanium alloy silk forms zinc-copper-titanium alloy coating, and this coating belongs to zinc-containing alloy coating, coating（Sun
Pole）With steel construction matrix (negative electrode) directly contact, steel construction matrix is provided with the cathodic protection effect of sacrificial anode.
In alloy, titanium elements are solid-solubilized in Zinc Matrix, play the effect of crystal grain thinning, and the titanium elements in alloy are in electric arc
The TiO with excellent lasting covering power and self-regeneration function can be formed in spraying process2；Copper is in Zinc Matrix
Dispersed precipitate, plays invigoration effect, optimizes kirsite interior metal crystal structure, it is to avoid intercrystalline corrosion occurs, and improves alloy
Physical and mechanical propertiess.
The present invention compared with prior art, has the advantage that：
（1）Electric arc spraying zinc-copper-titanium alloy silk forms zinc-copper-titanium alloy coating, and this coating belongs to zinc-containing alloy coating, coating（Sun
Pole）With steel construction matrix（Negative electrode）Directly contact, provides the cathodic protection effect of uniform sacrificial anode, negative electrode to steel construction matrix
Protective effect effect is obvious, it is to avoid the generation of point corrosion, and corrosion resistance is good.
（2）In arc spray process, motlten metal is become microgranule by high-speed gas atomization, and that is, metal micro-ion aoxidizes
Reaction, can produce enough TiO2, TiO2There is excellent lasting covering power and self-regeneration function, real to sprayed coating
Further enhance the self-regeneration after passivation and breakdown of coating while existing self-isolation, improve corrosion resistance coating energy.
（3）On steel construction matrix, electric arc spraying zinc-copper-titanium alloy silk forms zinc-copper-titanium alloy coating, this zinc-copper-titanium alloy
Coating is fine and close, porosity is low, high with the bond strength of matrix and anticorrosive paint, satisfactory mechanical property.
Beneficial effect：The zinc-copper-titanium alloy coating being formed on steel construction matrix is fine and close, porosity is low, prevents with matrix and again
The bond strength of rotten coating is high, and coating has the effect of self-isolation and self-regeneration in itself, improves corrosion resistance coating.Zinc-copper titanium
The electrode potential of alloy coat is relatively low, in 3.5wt%NaCl solution soaking different time, its corrosion electric current density is little and has gradually
The trend slowing down, can effectively extend the service life of steel construction, and anti-corrosion life can reach 40-50.Can be widely applied to steel
The corrosion protection of structure, can reduce steel construction life-cycle anti-corrosion cost, have the prospect of popularization.
Brief description
Fig. 1 is steel construction zinc-copper-titanium alloy corrosion-inhibiting coating structural representation；
Fig. 2 is the sample cosmetic variation figure of embodiment 3 after resistance to neutral salt spray test；
In figure：1st, zinc-copper-titanium alloy coating, 2, steel construction matrix.
Specific embodiment
With reference to embodiment and chart, the invention will be further described.
Each component weight percentages of zinc-copper-titanium alloy silk in the present invention：Ti+Cu≤0.65%, remaining is zinc.
Wherein zinc-copper-titanium alloy silk can be limited using the positive greatly engineering technology of following technique preparation or directly purchase Jiangsu chats
The zinc-copper-titanium alloy silk that company develops.The preparation technology of zinc-copper-titanium alloy silk comprises the following steps：
（1）Prepare intermediate alloy：Carry out dispensing by the percetage by weight of above-mentioned zinc-copper-titanium alloy silk, then enter in resistance smelting furnace
Row melting, preparation Zn-Ti intermediate alloy, Zn-Cu intermediate alloy；
（2）Zinc-copper-titanium alloy melting：First part zinc ingot metal is put into smelting furnace, melting kettle is high purity graphite crucible, using high-purity argon
Gas is protective gas, and energising is warming up to 420 DEG C -450 DEG C, treats that zinc ingot metal is melted into zinc liquid（First melt the 30% of zinc ingot metal）, progressively add
Zinc ingot metal, until the fusing of all zinc ingot metals, removes oxide skin and the other impurities on zinc liquid surface, continues energising and be warming up to 1000-1500
DEG C, add zinc titanium intermediate alloy and zinc-copper intermediate alloy successively, treat that alloy is completely melt and stirs to melting down, standing
0.5-2h, wooden carbon makees coverture；
（3）Zinc-copper-titanium alloy is cast：Alloy melting finishes, and before casting, sampling detects actual chemical composition, treats that composition detection is closed
After lattice, casting of skimming when 400 DEG C -600 DEG C, zinc-copper titanium liquid is cast into bar-shaped, specification is Φ 80- Φ 150mm；
（4）Casting rod is surface-treated：Treat that casting rod is completely cooled down to room temperature it is ensured that core is consistent with surface temperature, remove surface oxidation
Skin, waits extrusion process；
（5）Heat treatment before pre-extrusion：Casting rod is put in vacuum heat-preserving stove, is warming up to 200 DEG C -300 DEG C, be incubated 10-15h；
（6）Pre-extrusion：Casting rod extrudes to Φ 5- Φ 8 silk material through extruder, and pre-extrusion material is placed again in heat-treatment furnace
Carry out heat treatment；
（7）Drawing filamentation：By Φ 5- Φ 8 silk material through the 3-5 drawing of wire drawing production equipment, after drawing, silk material specification is Φ 2- Φ
4㎜.
Certain steel construction test specimen, removes steel construction matrix 2 surface corrosion product using existing sand spray machine sand spray, steel knot after process
Structure matrix 2 surface cleanness reaches more than Sa3 level, and surface roughness is Rz60 μm -100 μm；Then zinc-copper-titanium alloy silk is installed
Mechanization secondary atomized with high power electric arc spraying equipment in chats just development greatly（DGL-600）On；On steel construction matrix 2 surface
Electric arc spraying zinc-copper-titanium alloy silk, forms zinc-copper-titanium alloy coating 1, and its coating layer thickness is specifically shown in Table 1.It is derived from an employing
The steel construction test specimen of the erosion shield of electric arc spraying zinc-copper-titanium alloy silk, as shown in Figure 1.
From upper table 1, the zinc-copper-titanium alloy coating 1 that embodiment 1 to embodiment 6 steel construction test specimen is formed carries out performance
Detection, testing result shows：Zinc-copper-titanium alloy coating 1 and the bond strength >=6.5MPa of steel construction matrix 2, with anticorrosion coat
Bond strength be up to 12Mpa, the resistance to neutral salt spray test of coating porosity ＜ 2%, 2400h, zinc-copper-titanium alloy coating 1 surface is no
Red corrosion product, surface no foaming phenomena occurs.
Fig. 2 is the sample outward appearance of embodiment 3 after resistance to neutral salt spray test.
Picture in Fig. 2 is carried out it has been observed that finding that rust spot, rust staining or rusty stain all in specimen surface through 2400h,
Coating no foaming phenomena.
Then corrosion electric current density test is carried out to the zinc-copper-titanium alloy coating 1 of embodiment 2, specifically as shown in table 2.
Knowable to upper table 2, zinc-copper-titanium alloy coating 1 corrosion electric current density is little and assumes the trend gradually slowing down, this phenomenon
The corrosion rate of steel construction matrix 2 can effectively be reduced, extend the Years Of Service of steel construction matrix 2.
Table 3-1 and table 3-2 gives under different etching times, the mass loss of four kinds of different metals coating sample with
The situation of change of salt mist experiment time.
Zinc-copper titanium, zinc, the rate of corrosion of zinc-aluminium protective layer sample are in first rising and decline state afterwards, and aluminized coating is final
Corrosion rate is in rising trend, and the protecting film that this is formed with its surface occurs destruction to have relation.
Data above is analyzed, with the corrosion rate of Zn metal coating test plate (panel) as reference, the corrosion rate of Al metal coating
For the 83.16% of Zn metal coating test plate (panel), Zn-Al alloy corrosion rate be the 74.32% of Zn metal coating test plate (panel), zinc-copper titanium
Corrosion rate is the 43.14% of Zn metal coating test plate (panel).In a word, the corrosion resistance of zinc-copper-titanium alloy coating is optimum.
In sum, this coating belongs to zinc-containing alloy coating 1, coating（Anode）With steel construction matrix 2（Negative electrode）Directly connect
Touch, steel construction matrix 2 is provided with the cathodic protection effect of sacrificial anode, zinc-copper Ti electrode current potential is than the electricity of pure zinc, allumen
Electrode potential is low, and substantially, corrosion resistance is good for cathodic protection action effect；Zinc-copper-titanium alloy coating 1 is in 3.5wt%NaCl solution soaking not
The same time, its corrosion electric current density assumes the trend gradually slowing down, and the anticorrosion time limit, up to 40-50, extends having of steel construction
Effect service life, also reduces steel construction life-cycle anti-corrosion cost.
Claims (3)
1. a kind of steel construction zinc-copper-titanium alloy corrosion-inhibiting coating structure is it is characterised in that in steel construction matrix（2）Surface arcing sprays
Zinc-copper-titanium alloy silk, forms zinc-copper-titanium alloy coating（1）, described zinc-copper-titanium alloy coating（1）Thickness be 50 μm -260 μm；Institute
State each component weight percentage of zinc-copper-titanium alloy silk：Ti+Cu≤0.65%, balance of zinc.
2. a kind of steel construction zinc-copper-titanium alloy corrosion-inhibiting coating structure according to claim 1 is it is characterised in that described zinc-copper
Titanium alloy coating（1）Thickness be 80 μm -200 μm.
3. a kind of steel construction zinc-copper-titanium alloy corrosion-inhibiting coating structure according to claim 1 and 2 is it is characterised in that described
Zinc-copper-titanium alloy coating（1）Thickness be 100 μm -160 μm.
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| CN201610827881.3A CN106399895A (en) | 2016-09-18 | 2016-09-18 | Zinc-copper-titanium alloy anticorrosive coating structure of steel structure |
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| CN201610827881.3A CN106399895A (en) | 2016-09-18 | 2016-09-18 | Zinc-copper-titanium alloy anticorrosive coating structure of steel structure |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1629353A (en) * | 2003-12-18 | 2005-06-22 | 中国科学院海洋研究所 | Hot spraying aluminium-zinc alloy wire rod and method for making same |
| CN202323699U (en) * | 2011-11-15 | 2012-07-11 | 江苏中矿大正表面工程技术有限公司 | Corrosion preventing and friction increasing coating structure for steel structure junction surface |
| CN104073757A (en) * | 2014-07-16 | 2014-10-01 | 中国石油大学(华东) | Method for enhancing corrosion resistance and fatigue resistance of ocean structural steel |
-
2016
- 2016-09-18 CN CN201610827881.3A patent/CN106399895A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1629353A (en) * | 2003-12-18 | 2005-06-22 | 中国科学院海洋研究所 | Hot spraying aluminium-zinc alloy wire rod and method for making same |
| CN202323699U (en) * | 2011-11-15 | 2012-07-11 | 江苏中矿大正表面工程技术有限公司 | Corrosion preventing and friction increasing coating structure for steel structure junction surface |
| CN104073757A (en) * | 2014-07-16 | 2014-10-01 | 中国石油大学(华东) | Method for enhancing corrosion resistance and fatigue resistance of ocean structural steel |
Non-Patent Citations (1)
| Title |
|---|
| 谭兵: "锌铜钛合金板带材的试制及性能", 《冶金丛刊》 * |
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Application publication date: 20170215 |