CN105274601A - Method for improving performance of aluminum magnesium alloy by adding nano-titanium dioxide into electrolyte - Google Patents
Method for improving performance of aluminum magnesium alloy by adding nano-titanium dioxide into electrolyte Download PDFInfo
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- CN105274601A CN105274601A CN201410291862.4A CN201410291862A CN105274601A CN 105274601 A CN105274601 A CN 105274601A CN 201410291862 A CN201410291862 A CN 201410291862A CN 105274601 A CN105274601 A CN 105274601A
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- magnesium alloy
- aluminum magnesium
- titanium oxide
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Abstract
The invention discloses a method for improving the performance of aluminum magnesium alloy by adding nano-titanium dioxide into electrolyte to improve the performance of the aluminum magnesium alloy and meet the industrial requirements. The method comprises the steps that an oxide ceramic film is prepared on the surface of the aluminum magnesium alloy by means of micro-arc oxidation equipment, the nano-titanium dioxide is added into the electrolyte for preparing the oxide ceramic film, and the concentration of the nano-titanium dioxide is 2g/L-4g/L.
Description
Technical field
The present invention relates to a kind of method of adding nano titanium oxide raising aluminum magnesium alloy performance in the electrolytic solution, belong to aluminum magnesium alloy Performance Optimization technique field.
Background technology
Apply more widely along with the light-weighted trend of mechanical component makes high tough aluminium alloy have.In order to meet the demand constantly increased, researcher has carried out a large amount of scientific researches to high-toughness casting aluminum alloy, also achieves a lot of achievements.But how improve the performance of existing cast aluminium alloy further and develop novel alloy series to meet various needs, remaining an important problem.The current potential of aluminium depends on the insulating property of ceramic film to a certain extent, improves the compactness of its surface oxidation ceramic film, increases the raising that the thickness of rete all contributes to corrosion resistance.The corrosion speed of aluminium alloy is more faster than fine aluminium in general.
Differential arc oxidization technique highlights in numerous process for treating surface, from introduction research till now, although have many achievements and conclusion, is also in conceptual phase, non-large scale investment industrial production.
Aluminum alloy differential arc oxidation technology concentrates on YL12 both at home and abroad mostly, and cast aluminium alloy mainly concentrates on Al – Si system alloy, as the Xue Wenbin etc. of Beijing Normal University low energy physics Institute, less to the research of Al-Mg system alloy.
Summary of the invention
The technical problem to be solved in the present invention: provide a kind of and add the method that nano titanium oxide improves aluminum magnesium alloy performance in the electrolytic solution, be intended to the performance improving aluminum magnesium alloy, with the demand of satisfied industry.
Technical scheme of the present invention:
Add the method that nano titanium oxide improves aluminum magnesium alloy performance in the electrolytic solution, adopt and microarc oxidation equipment providedly prepare ceramic oxide rete on aluminum magnesium alloy surface, add nano titanium oxide preparing in ceramic oxide rete electrolytic solution used, the concentration of described nano titanium oxide is 2g/L ~ 4g/L.
As preferably, the concentration of described nano titanium oxide is 3g/L.
As preferably, described microarc oxidation equipment providedly exchange microarc oxidation equipment provided for two pulse.
As preferably, described electrolytic solution is silicate electrolyte.
Beneficial effect of the present invention:
In silicate systems, add nanometer titanium dioxide titanium additives differential arc oxidation is carried out to aluminum magnesium alloy, after differential arc oxidation, the crizzle of ceramic film and porosity obviously reduce, especially in the electrolytic solution the content of nanometer titanium dioxide titanium additives is when about 3g/L, and after differential arc oxidation, specimen surface can obtain the good ceramic film of over-all properties.
accompanying drawing illustrates:
Fig. 1 is n-TiO
2the curve that add-on changes thicknesses of layers;
Fig. 2 is that the surface hardness of ceramic layer is with n-TiO
2the change curve of add-on.
embodiment:
Embodiment:
In the present invention microarc oxidation equipment provided for two pulse exchange microarc oxidation equipment provided, electrolytic solution is silicate electrolyte.
First the electrolytic solution of different nanometer titanium dioxide titanium content is prepared, scoring with massfraction Han nano titanium oxide be not 0,1,2,3,4,5, its numbering is respectively 1,2,3,4,5,6, then prepares ceramic oxide rete by microarc oxidation equipment provided for the employing of this electrolytic solution on aluminum magnesium alloy surface.
Measure ceramic layer mean thickness with TT230 cladding thickness measurer, as can be seen from Figure 1, micro-arc oxidation films layer thickness is along with n-TiO
2add the trend presenting and first increase and subtract afterwards.Under this experiment condition, work as n-TiO
2when concentration is 3g/L, corresponding thicknesses of layers value is maximum, does not add n-TiO
2time thicknesses of layers increase 11 μm.
Adopt HV1000 microhardness tester to measure the microhardness of sample, concrete data plot Fig. 2: as can be seen from Figure 2, the changes in hardness trend of rete outside surface and the variation tendency of thicknesses of layers similar, the increase with n-TiO2 concentration first increases and subtracts afterwards.When n-TiO2 concentration is 3g/L, film hardness value reaches maximum (620HV), than do not add n-TiO2 time hardness improve nearly 65%.
Claims (4)
1. add the method that nano titanium oxide improves aluminum magnesium alloy performance in the electrolytic solution, it is characterized in that: adopt and microarc oxidation equipment providedly prepare ceramic oxide rete on aluminum magnesium alloy surface, add nano titanium oxide preparing in ceramic oxide rete electrolytic solution used, the concentration of described nano titanium oxide is 2g/L ~ 4g/L.
2. method of adding nano titanium oxide raising aluminum magnesium alloy performance in the electrolytic solution according to claim 1, is characterized in that: the concentration of described nano titanium oxide is 3g/L.
3. according to claim 1ly add the method that nano titanium oxide improves aluminum magnesium alloy performance in the electrolytic solution, it is characterized in that: described microarc oxidation equipment provided for two pulse interchange microarc oxidation equipment provided.
4. method of adding nano titanium oxide raising aluminum magnesium alloy performance in the electrolytic solution according to claim 1, is characterized in that: described electrolytic solution is silicate electrolyte.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410291862.4A CN105274601A (en) | 2014-06-26 | 2014-06-26 | Method for improving performance of aluminum magnesium alloy by adding nano-titanium dioxide into electrolyte |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410291862.4A CN105274601A (en) | 2014-06-26 | 2014-06-26 | Method for improving performance of aluminum magnesium alloy by adding nano-titanium dioxide into electrolyte |
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| CN105274601A true CN105274601A (en) | 2016-01-27 |
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| CN201410291862.4A Pending CN105274601A (en) | 2014-06-26 | 2014-06-26 | Method for improving performance of aluminum magnesium alloy by adding nano-titanium dioxide into electrolyte |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108277516A (en) * | 2018-04-13 | 2018-07-13 | 中国人民解放军陆军装甲兵学院 | A kind of micro-arc oxidation electrolyte and a kind of preparation method of micro-arc oxidation films |
-
2014
- 2014-06-26 CN CN201410291862.4A patent/CN105274601A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108277516A (en) * | 2018-04-13 | 2018-07-13 | 中国人民解放军陆军装甲兵学院 | A kind of micro-arc oxidation electrolyte and a kind of preparation method of micro-arc oxidation films |
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Application publication date: 20160127 |