CN100491590C - Method for producing magnesium-lithium alloy titanium anticorrosion coating - Google Patents
Method for producing magnesium-lithium alloy titanium anticorrosion coating Download PDFInfo
- Publication number
- CN100491590C CN100491590C CNB2007100722968A CN200710072296A CN100491590C CN 100491590 C CN100491590 C CN 100491590C CN B2007100722968 A CNB2007100722968 A CN B2007100722968A CN 200710072296 A CN200710072296 A CN 200710072296A CN 100491590 C CN100491590 C CN 100491590C
- Authority
- CN
- China
- Prior art keywords
- titanium
- coating
- lithium alloy
- alloy
- fused salt
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Electrolytic Production Of Metals (AREA)
Abstract
The process of forming anticorrosive titanium coating on the surface of Mg-Li alloy utilizes the multiple valence state characteristic of titanium and makes titanium produce disproportionation reaction in the molten salt to generate simple substance titanium deposited on the surface of Mg-Li alloy. The process includes heating AlCl3-NaCl salt in a treating furnace to 150-350 deg.c for liquefying, adding K2TiF6 and metal Ti into the molten salt, setting the Mg-Li alloy part to be coated on one rotating head and into the molten salt, and rotating the Mg-Li alloy part to react for 5-20 hr while introducing protective Ar. The process prepares the coating in relatively low temperature in no air and no water condition can prevent high temperature oxidation and lithium-water reaction and raise the anticorrosive performance of the coating effectively.
Description
Technical field
A kind of method for preparing magnesium-lithium alloy titanium anticorrosion coating belongs to the alloy coat preparation field.
Background technology
The main element magnesium of magnesium lithium alloy and lithium all belong to very active element, are very easily corroded in air, steam especially salt fog; Being relevant to its aseptic technic, all is the aseptic technic of continuing to use other magnesium alloy generally, as chemical conversion embrane method, anonizing, vapour deposition process etc.Documents " Preparation andgalvanic anodizing of a Mg-Li alloy " (Li Jingfeng, Zheng Ziqiao etc., Materials Science; Engineering A, 2006,433:233-240) a kind of method of utilizing anonizing to prepare the magnesium lithium alloy corrosion protection coating is disclosed.
Because the lithium in the magnesium lithium alloy is a kind ofly than the also active element of magnesium oxidation to take place very easily in air, especially under the temperature conditions of higher; In addition, fierce reaction also can take place with water in lithium.Therefore, adopt the aseptic technic of general magnesium alloy to be difficult to the preservative effect that reaches satisfied, " taking off lithium " phenomenon takes place easily.
For ferrous materials, can utilize disproportionation reaction that titanium alloy is applied on it, its mechanism is: the more (Ti of the valence state of titanium
0, Ti
2+, Ti
3+And Ti
4+), reaction:
Ti(metal)+(n-1)Ti
n+→nTi
(n-1)+ (1)
nTi
(n-1)+→Ti(alloy)+(n-1)Ti
n+ (2)
Can carry out constantly, make that sedimentary titanium coating is more and more thicker on the base material.In the formula: Ti (metal) puts into the metal titanium of fused salt when referring to surface treatment; Ti (alloy) is for being deposited on the titanium on the base material by disproportionation reaction; Ti
N+For being present in the titanium ion in the fused salt, it is the media that disproportionation reaction is carried out, and remains unchanged in reaction process concentration, plays metal titanium is passed to effect on the base material.Entire reaction course roughly is divided into seven steps: 1. the reaction of (1) formula takes place on the solid-liquid interface on metal titanium surface; 2. Ti
(n-1)+Move in fused salt liquid phase from the liquid-solid interface on metal titanium surface; 3. Ti in the liquid phase
(n-1)+The liquid-solid interface of basad material surface moves; 4. the reaction of (2) formula takes place on the liquid-solid interface of substrate material surface; 5. Ti
N+The liquid-solid interface of leaving substrate material surface moves in fused salt liquid phase; 6. a solid liquid/solid interface chemical reaction takes place between base material and the titanium metal rete; 7. the mutual diffusion mutually between the component in base material and the surperficial product layer.But do not see the report that has the disproportionation reaction utilized to prepare the magnesium-lithium alloy titanium coating.
Summary of the invention
The purpose of this invention is to provide a kind of method for preparing magnesium-lithium alloy titanium anticorrosion coating, it utilizes the multivalence step response of titanium, make it that disproportionation reaction take place in fused salt, and the simple substance titanium that produces is deposited on the magnesium lithium alloy surface, thereby improves the corrosion resistance of magnesium lithium alloy.
Embodiments of the present invention are the AlCl that will handle in the stove
3-NaCl fused salt (mol ratio is 1～3) is heated to 150～350 ℃, makes its liquefaction, adds K simultaneously in fused salt
2TiF
6And metal titanium, the magnesium lithium alloy material that will prepare coating by anchor clamps is fixed on one by in the motor-driven rotary head, and puts into fused salt.In the coating preparation process, handle feeding argon gas in the stove, and starter motor makes the constantly rotation in fused salt of magnesium lithium alloy material as shielding gas.So, because K
2TiF
6And the disproportionation reaction between the metal titanium, the titanium metal of generation is deposited on the magnesium lithium alloy material.React after 5～20 hours, can on magnesium lithium alloy, obtain certain thickness titanium coating.
The present invention can lower temperature, with air insulated, anhydrous environment under carry out coating preparation, therefore can avoid in preparation magnesium lithium alloy coating procedure, high temperature oxidation and lithium and water taking place effectively and react (" taking off lithium " phenomenon), improve the corrosion resistance of coating effectively.
Embodiment
Be that example illustrates its implementation result with concrete enforcement parameter below:
Embodiment 1:
With AlCl
3-NaCl fused salt (mol ratio is 1.5) is a molten salt system, and the mol ratio of pressing 1:1 simultaneously in fused salt adds an amount of K
2TiF
6And metal titanium, after handling stove internal heating to 150 ℃ and being incubated half an hour, magnesium lithium alloy immersed fused salt and make it speed rotation with 150 rev/mins, in treating processes, feed straight argon (purity is 99.99vol%) as shielding gas simultaneously.Handled 10 hours.Utilize scanning electron microscope that the thickness of coatings prepared is observed, the corrosion resistance that has prepared coating is tested and is drawn the corrosion potential value of coating by the galvanic corrosion test macro.
The coat-thickness of gained sample is: 8 μ m, corrosion potential is :-1.320V.
Embodiment 2:
With AlCl
3-NaCl fused salt (mol ratio is 2) is a molten salt system, and the mol ratio of pressing 1:1 simultaneously in fused salt adds an amount of K
2TiF
6And metal titanium, after handling stove internal heating to 200 ℃ and being incubated half an hour, magnesium lithium alloy immersed fused salt and make it speed rotation with 150 rev/mins, in treating processes, feed straight argon (purity is 99.99vol%) as shielding gas simultaneously.Handled 15 hours.Utilize scanning electron microscope that the thickness of coatings prepared is observed, the corrosion resistance that has prepared coating is tested and is drawn the corrosion potential value of coating by the galvanic corrosion test macro.
The coat-thickness of gained sample is: 12 μ m, corrosion potential is :-1.298V.
Embodiment 3:
With AlCl
3-NaCl fused salt (mol ratio is 2.5) is a molten salt system, and the mol ratio of pressing 1:1 simultaneously in fused salt adds an amount of K
2TiF
6And metal titanium, after handling stove internal heating to 250 ℃ and being incubated half an hour, magnesium lithium alloy immersed fused salt and make it speed rotation with 150 rev/mins, in treating processes, feed straight argon (purity is 99.99vol%) as shielding gas simultaneously.Handled 20 hours.Utilize scanning electron microscope that the thickness of coatings prepared is observed, the corrosion resistance that has prepared coating is tested and is drawn the corrosion potential value of coating by the galvanic corrosion test macro.
The coat-thickness of gained sample is: 15 μ m, corrosion potential is :-1.316V.
Based on above embodiment, utilize the present invention can on magnesium lithium alloy, obtain certain thickness titanium coating, and have good corrosion resistance.
Claims (1)
1. method for preparing magnesium-lithium alloy titanium anticorrosion coating is based on the disproportionation reaction mechanism of titanium; It is characterized in that: titanium alloy being deposited in the process of magnesium lithium alloy material surface, is 1～3 AlCl with mol ratio
3-NaCl fused salt is put into and is handled stove, is heated to 150～350 ℃ and makes its liquefaction, and add K in fused salt
2TiF
6And metal titanium; The magnesium lithium alloy material that need are prepared coating immerses in the fused salt and uniform motion incessantly; Handle and feed argon gas in the stove; To be controlled in the reaction times 5～20 hours according to required coat-thickness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100722968A CN100491590C (en) | 2007-06-01 | 2007-06-01 | Method for producing magnesium-lithium alloy titanium anticorrosion coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100722968A CN100491590C (en) | 2007-06-01 | 2007-06-01 | Method for producing magnesium-lithium alloy titanium anticorrosion coating |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101067200A CN101067200A (en) | 2007-11-07 |
| CN100491590C true CN100491590C (en) | 2009-05-27 |
Family
ID=38879889
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100722968A Expired - Fee Related CN100491590C (en) | 2007-06-01 | 2007-06-01 | Method for producing magnesium-lithium alloy titanium anticorrosion coating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100491590C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102345103A (en) * | 2011-09-23 | 2012-02-08 | 佳木斯大学 | Preparation method of titanium modified layer on surface of magnesium and lithium alloy |
| TWI545202B (en) | 2016-01-07 | 2016-08-11 | 安立材料科技股份有限公司 | Light magnesium alloy and method for forming the same |
| CN113793920B (en) * | 2021-08-09 | 2023-07-25 | 华中科技大学 | Construction method and application of in-situ lithium aluminum alloy layer on surface of metal lithium |
-
2007
- 2007-06-01 CN CNB2007100722968A patent/CN100491590C/en not_active Expired - Fee Related
Non-Patent Citations (4)
| Title |
|---|
| 氮化铝陶瓷表面钛金属化的研究. 黄奇良，潘伟，胡忠.材料导报，第16卷第2期. 2002 |
| 氮化铝陶瓷表面钛金属化的研究. 黄奇良，潘伟，胡忠.材料导报，第16卷第2期. 2002 * |
| 热歧化反应法在Al2O3陶瓷表面沉积钛的动力学研究. 黄奇良，陈善才.广西民族学院学报(自然科学版)，第5卷第4期. 1999 |
| 热歧化反应法在Al2O3陶瓷表面沉积钛的动力学研究. 黄奇良，陈善才.广西民族学院学报(自然科学版)，第5卷第4期. 1999 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101067200A (en) | 2007-11-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Mersagh Dezfuli et al. | A study on the effect of presence of CeO2 and benzotriazole on activation of self‐healing mechanism in ZrO2 ceramic‐based coating | |
| Razavi-Tousi et al. | Mechanism of corrosion of activated aluminum particles by hot water | |
| Encinas-Sánchez et al. | Corrosion resistance of protective coatings against molten nitrate salts for thermal energy storage and their environmental impact in CSP technology | |
| Li et al. | Preparation and corrosion resistance studies of zirconia coating on fluorinated AZ91D magnesium alloy | |
| Wu et al. | Preparation and properties of erbium oxide films deposited by radio frequency magnetron sputtering | |
| Jamnapara et al. | Comparative analysis of insulating properties of plasma and thermally grown alumina films on electrospark aluminide coated 9Cr steels | |
| Li et al. | An effective low-temperature strategy for sealing plasma sprayed Al2O3-based coatings | |
| CN100491590C (en) | Method for producing magnesium-lithium alloy titanium anticorrosion coating | |
| US9174416B2 (en) | Alloy powder for oxidation-resistant coating, and alloy material formed of the powder and excellent in oxidation resistance characteristics | |
| Biryukov et al. | The effect of the chemical composition of intermetallic phases on the corrosion of thermal diffusion zinc coatings | |
| RU2014146776A (en) | EL-COVERED SPRAY COVERED WITH AL-CR-O CONTAINING Si CONTAINING IMPROVED CAPABILITY | |
| CN106086812B (en) | A kind of anti abrasive composite coating of metal surface anticorrosive and preparation method thereof | |
| Luo et al. | Enhanced corrosion resistance properties of Fe–Al–Cr laser cladding coatings on 1045 carbon steel substrates | |
| Hutterer et al. | Influence of composition on structural evolution of high‐entropy zirconates—cationic radius ratio and atomic size difference | |
| Gamutan et al. | Surface modification of a Mo-substrate to form an oxidation-resistant MoSi2 layer using a Si-saturated tin bath | |
| Sun et al. | High temperature oxidation resistance of NiCoCrAl high entropy alloy coating on the TiAl alloy | |
| CN105401147A (en) | High-temperature corrosion-resistant coating containing aluminum oxide diffusion barriers and preparation method for high-temperature corrosion-resistant coating | |
| Wang et al. | Optimizing cathodic electrodeposition parameters of ceria coating to enhance the oxidation resistance of a Cr2O3-forming alloy | |
| Chi et al. | Effect of post-spray annealing on the microstructure and corrosion resistance of nano-(Ti, V) N coatings | |
| Li et al. | Corrosion behavior of Fe–Al coatings fabricated by pack aluminizing method | |
| Zhao et al. | An efficient salt-thermo-carburizing method to prepare titanium carbide coating | |
| Triani et al. | Production of aluminide layers on AISI 304 stainless steel at low temperatures using the slurry process | |
| CN102424948A (en) | Method of preparing CoAlNi coating on Ni-based high-temperature alloy through pack cementation | |
| Yan et al. | Phase transitions of plasma sprayed Fe–Al intermetallic coating during corrosion in molten zinc at 640° C | |
| CN102534468A (en) | Preparation technology for steel-surface in-situ ceramic layer used in low-temperature aluminizing petroleum pipeline |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090527 Termination date: 20120601 |