CN102978595A - Magnesium and magnesium alloy surface anticorrosion method - Google Patents
Magnesium and magnesium alloy surface anticorrosion method Download PDFInfo
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- CN102978595A CN102978595A CN2012103775370A CN201210377537A CN102978595A CN 102978595 A CN102978595 A CN 102978595A CN 2012103775370 A CN2012103775370 A CN 2012103775370A CN 201210377537 A CN201210377537 A CN 201210377537A CN 102978595 A CN102978595 A CN 102978595A
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- magnesium
- alloy surface
- ammonium phosphate
- alloy
- magnesium alloy
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Abstract
The present invention relates to a magnesium and magnesium alloy surface anticorrosion method. The method comprises: preparing a phosphate solution with a concentration of 40-55%, placing magnesium requiring treatment or a magnesium alloy requiring treatment in the solution for 36-60 h, and adopting low-pressure steam to heat the surface of the metal requiring treatment, wherein a heating temperature is 80-180 DEG C, and a heating time is 10-20 h.
Description
Technical field
The invention belongs to metallic surface rust cleaning technical field, refer to especially a kind of magnesium and Mg alloy surface preserving method.
Background technology
Magnesium and magnesium alloy are the active metal, in physical environment, be easy to corrosion, the etching problem of magnesium and magnesium alloy, mainly contain at present three kinds of settling modes, the first is to apply protective system, the second is to adopt to electroplate corrosion resistant metal, and the third adopts the alloy mode to solve, but also needs to carry out anti-corrosive treatment for most of magnesium alloy.For the first and the second processing mode, before carrying out rotproofing, to carry out processing of rust removing, namely remove corrosion or the zone of oxidation of metallic surface with rust remover, apply again anticorrosive or plating, this mode has increased cost and operating procedure.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of anti-corrosion method is provided, the method can according to the corrodible property of the magnesium in each field and magnesium alloy, reduce production cost and environmental pollution when effectively having realized anti-corrosion effects.
The present invention is achieved by the following technical solutions:
A kind of magnesium and Mg alloy surface preserving method, it may further comprise the steps:
1), compound concentration is the phosphate solution of 40-55%, and pending magnesium and magnesium alloy are positioned in this solution 36-60 hour;
2), heat pending metallic surface with low-pressure steam, Heating temperature is 80-180 ℃, and be 10-20 hour heat-up time.
Described phosphoric acid salt is Secondary ammonium phosphate, a kind of in primary ammonium phosphate or the ammonium phosphate; Be preferably Secondary ammonium phosphate.
The invention has the beneficial effects as follows:
By technical scheme of the present invention, do not need to remove zone of oxidation or the rusty scale of metallic surface, therefore can not cause the loss of metal thickness, and directly change rust and the zone of oxidation of magnesium and Mg alloy surface into corrosion-resistant protective layer.
Embodiment
Below describe technical scheme of the present invention in detail by specific embodiment.
A kind of magnesium and Mg alloy surface preserving method, it may further comprise the steps:
1), compound concentration is the phosphate solution of 40-55%, and pending magnesium and magnesium alloy are positioned in this solution 36-60 hour;
2), heat pending metallic surface with low-pressure steam, Heating temperature is 80-180 ℃, and be 10-20 hour heat-up time.
Described phosphoric acid salt is Secondary ammonium phosphate, a kind of in primary ammonium phosphate or the ammonium phosphate; Be preferably Secondary ammonium phosphate.
It mainly is the penetrating quality of utilizing molecule in the technical program; phosphate molecule is inner by penetrating into magnesium and magnesium alloy; pass through again steam heating; phosphoric acid salt and reactive magnesium generate phosphoric acid salt magnesium and magnesium hydroxide; and these two kinds of products are and are insoluble in water; and because being formed at the inside of magnesium and Mg alloy surface, directly the space of confining surface plays a protective role.
Example is processed two magnesium alloy plates with the technical program, wherein one for there being the zone of oxidation magnesium alloy plate, one is the magnesium alloy plate that process through removing zone of oxidation on the surface, the one side of these two magnesium alloy plates is all processed with aforesaid way through the same terms, and all in 25-35 ℃ temperature range after 140 hours, be positioned over 25 ℃, observed afterwards in 60 days in 8% salts solution, metal sheet through the technical program processing one side does not change, and quite unobvious through a corrosion phenomenon of the technical program processing.
Claims (3)
1. a magnesium and Mg alloy surface preserving method is characterized in that: may further comprise the steps:
1), compound concentration is the phosphate solution of 40-55%, and pending magnesium and magnesium alloy are positioned in this solution 36-60 hour;
2), heat pending metallic surface with low-pressure steam, Heating temperature is 80-180 ℃, and be 10-20 hour heat-up time.
2. magnesium according to claim 1 and Mg alloy surface preserving method, it is characterized in that: described phosphoric acid salt is Secondary ammonium phosphate, a kind of in primary ammonium phosphate or the ammonium phosphate.
3. magnesium according to claim 2 and Mg alloy surface preserving method, it is characterized in that: described phosphoric acid salt is preferably Secondary ammonium phosphate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103775370A CN102978595A (en) | 2012-09-29 | 2012-09-29 | Magnesium and magnesium alloy surface anticorrosion method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103775370A CN102978595A (en) | 2012-09-29 | 2012-09-29 | Magnesium and magnesium alloy surface anticorrosion method |
Publications (1)
| Publication Number | Publication Date |
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| CN102978595A true CN102978595A (en) | 2013-03-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN2012103775370A Pending CN102978595A (en) | 2012-09-29 | 2012-09-29 | Magnesium and magnesium alloy surface anticorrosion method |
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| CN (1) | CN102978595A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105296981A (en) * | 2015-11-10 | 2016-02-03 | 黄忠波 | Method for corrosion resistance of magnesium and magnesium alloy |
| CN106282991A (en) * | 2016-08-19 | 2017-01-04 | 张超 | A kind of magnesium and magnesium alloy preserving method |
| CN106967972A (en) * | 2017-05-16 | 2017-07-21 | 东南大学 | It is a kind of to be used for the coating and its application method in Cast aluminium alloy gold surface prepares coating |
| CN107164749A (en) * | 2017-05-16 | 2017-09-15 | 东南大学 | A kind of coating and application method that aluminate or phosphate coating is prepared for aluminum alloy surface |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH01129874A (en) * | 1987-10-30 | 1989-05-23 | Warner Lambert Co | Flexible razor head |
| JPH1129874A (en) * | 1997-07-09 | 1999-02-02 | Matsushita Electric Ind Co Ltd | Surface treated magnesium or magnesium alloy product, method of surface treatment and coating method |
| JP2002322567A (en) * | 2001-04-24 | 2002-11-08 | Chiyoda Chemical Kk | Surface treatment method for casting and cast article |
| CN1523133A (en) * | 2003-09-05 | 2004-08-25 | 华中科技大学 | Non-chromium surface treatment method for magnesium alloy accessory |
| CN101849031A (en) * | 2007-07-27 | 2010-09-29 | 独立行政法人产业技术综合研究所 | Magnesium alloy material, and method for treatment of surface of magnesium alloy material |
-
2012
- 2012-09-29 CN CN2012103775370A patent/CN102978595A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01129874A (en) * | 1987-10-30 | 1989-05-23 | Warner Lambert Co | Flexible razor head |
| JPH1129874A (en) * | 1997-07-09 | 1999-02-02 | Matsushita Electric Ind Co Ltd | Surface treated magnesium or magnesium alloy product, method of surface treatment and coating method |
| JP2002322567A (en) * | 2001-04-24 | 2002-11-08 | Chiyoda Chemical Kk | Surface treatment method for casting and cast article |
| CN1523133A (en) * | 2003-09-05 | 2004-08-25 | 华中科技大学 | Non-chromium surface treatment method for magnesium alloy accessory |
| CN101849031A (en) * | 2007-07-27 | 2010-09-29 | 独立行政法人产业技术综合研究所 | Magnesium alloy material, and method for treatment of surface of magnesium alloy material |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105296981A (en) * | 2015-11-10 | 2016-02-03 | 黄忠波 | Method for corrosion resistance of magnesium and magnesium alloy |
| CN106282991A (en) * | 2016-08-19 | 2017-01-04 | 张超 | A kind of magnesium and magnesium alloy preserving method |
| CN106967972A (en) * | 2017-05-16 | 2017-07-21 | 东南大学 | It is a kind of to be used for the coating and its application method in Cast aluminium alloy gold surface prepares coating |
| CN107164749A (en) * | 2017-05-16 | 2017-09-15 | 东南大学 | A kind of coating and application method that aluminate or phosphate coating is prepared for aluminum alloy surface |
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Application publication date: 20130320 |