CN104593774A - Magnesium alloy chemical corrodent - Google Patents
Magnesium alloy chemical corrodent Download PDFInfo
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- CN104593774A CN104593774A CN201510036217.2A CN201510036217A CN104593774A CN 104593774 A CN104593774 A CN 104593774A CN 201510036217 A CN201510036217 A CN 201510036217A CN 104593774 A CN104593774 A CN 104593774A
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Abstract
The invention discloses a magnesium alloy chemical corrodent. The magnesium alloy chemical corrodent is prepared by dissolving 10-15 parts by mass of citric acid and 5-10 parts by mass of gluconic acid in 100 parts by mass of water. The magnesium alloy chemical corrodent disclosed by the invention is prepared from citric acid and gluconic acid, thus avoiding too high acidity; meanwhile, the two weak acids are mixed and prepared, the ionization of hydrogen ions in gluconic acid and citric acid in the solution plays a role of manual promotion, and then the acidity of the prepared corrodent is enhanced, and too low acidity is avoided, so that the corrodent can be used for corroding a magnesium alloy and showing a crystal boundary. The chemical corrodent disclosed by the invention is simple in preparation method, and the metallographic structure of the magnesium alloy, in particular, a heat-treatment-state magnesium alloy can be rapidly and clearly shown by applying the chemical corrodent.
Description
Technical field
The present invention relates to the metallographic etching agent of technical field of metal, specifically a kind of magnesium alloy chemical etching reagent.
Background technology
Magnesium alloy is structural metallic materials the lightest in engineer applied, particularly has the incomparable advantage of other materials in the automotive industry in many Application Areass.In the research and development process of magnesium alloy, due to the difference of material composition, the difference of thermal treatment process, often obtain dissimilar metallographic structure, the performance of final alloy also difference to some extent.In order to obtain required magnesium alloy, the metallographic structure of alloy is needed to observe, and bonding properties test data, adjust composition and the thermal treatment process of alloy in time, its prerequisite is the display adopting suitable chemical mordant to realize tissue.
Usually, the chemical mordant of magnesium alloy is made up of nitric acid, hydrochloric acid, water etc., and acidity is comparatively strong, and due to the corrosion resistance nature extreme difference of magnesium alloy, in etching pit process, to be difficult to corrosion clear for crystal boundary, and etching time is difficult to control.Time is too short, and crystal boundary is difficult to corrosion out; Overlong time, often form the film like zone of oxidation that one deck is difficult to remove on metallographic specimen surface, cause surface blur unclear, second-phase is difficult to identification, has a negative impact to the observation and analysis of metallographic structure.In order to carry out effective metallurgical analysis to magnesium alloy, clearly observing materials microstructure form, needing to be further improved chemical mordant.
Summary of the invention
For solving the fuzzy problem being difficult to recognize of crystal boundary after existing Corrosion Behaviors of Magnesium Alloys agent corrosion, the invention provides a kind of magnesium alloy chemical etching reagent, applying this chemical mordant, can the metallographic structure of quick, clear display magnesium alloy particularly heat treatment state magnesium alloy.
The present invention for solving the problems of the technologies described above adopted technical scheme is: a kind of magnesium alloy chemical etching reagent, according to mass ratio, is dissolved in the water of 100 parts makes by the citric acid of 10-15 part and the gluconic acid of 5-10 part.
Compared with existing metallographic etching agent, the present invention has following advantage and beneficial effect:
1, the present invention adopts the alternative strong acid (nitric acid, hydrochloric acid) of weak acid (citric acid, gluconic acid) formulated, avoids the acid problem of oxidation caused excessively by force; Adopt two kinds of weak acid mixing, the entirety that improve etching reagent is acid simultaneously, thus the problem avoiding etching pit process excessively slow;
2, in the mixing acid that gluconic acid of the present invention and citric acid are mixed to form, in gluconic acid and citric acid, the effect of mutually promoting is played in hydrionic ionization, and then enhance the acidity of the etching reagent prepared, corrosion magnesium alloy can be used to and show crystal boundary;
3, each component of the present invention is conventional commercially available chemical reagent, and compound method is simple, proportionally first water is placed in beaker, then adds citric acid, gluconic acid, mix and can obtain; Apply this chemical mordant, can the metallographic structure of quick, clear display magnesium alloy particularly heat treatment state magnesium alloy.
Embodiment
For making content of the present invention become apparent, below in conjunction with specific embodiment, describe the present invention.
Embodiment 1
First 100g water is added in beaker, then add 10g citric acid, 10g gluconic acid respectively, stir gently with glass stick, mix.After etching reagent prepares, immersed by the magnesium alloy sample after polishing in the chemical mordant prepared, the etch time is 5-10 second, takes out rear alcohol rinse, dries or blot with filter paper, namely obtains the magnesium alloy metallographic structure that will observe.
Embodiment 2
First 100g water is added in beaker, then add 12g citric acid, 8g gluconic acid respectively, stir gently with glass stick, mix.After etching reagent prepares, immersed by the magnesium alloy sample after polishing in the chemical mordant prepared, the etch time is 5-10 second, takes out rear alcohol rinse, dries or blot with filter paper, namely obtains the magnesium alloy metallographic structure that will observe.
Embodiment 3
First 100g water is added in beaker, then add 15g citric acid, 5g gluconic acid respectively, stir gently with glass stick, mix.After etching reagent prepares, immersed by the magnesium alloy sample after polishing in the chemical mordant prepared, the etch time is 5-10 second, takes out rear alcohol rinse, dries or blot with filter paper, namely obtains the magnesium alloy metallographic structure that will observe.
Claims (1)
1. a magnesium alloy chemical etching reagent, is characterized in that: according to mass ratio, is dissolved in the water of 100 parts makes by the citric acid of 10-15 part and the gluconic acid of 5-10 part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510036217.2A CN104593774B (en) | 2015-01-26 | 2015-01-26 | A kind of magnesium alloy metallographic structure observational technique |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510036217.2A CN104593774B (en) | 2015-01-26 | 2015-01-26 | A kind of magnesium alloy metallographic structure observational technique |
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| CN104593774A true CN104593774A (en) | 2015-05-06 |
| CN104593774B CN104593774B (en) | 2017-08-01 |
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| CN201510036217.2A Expired - Fee Related CN104593774B (en) | 2015-01-26 | 2015-01-26 | A kind of magnesium alloy metallographic structure observational technique |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105043843A (en) * | 2015-08-05 | 2015-11-11 | 河南科技大学 | Magnesium alloy sample corrosive agent |
| CN105925983A (en) * | 2016-06-28 | 2016-09-07 | 北京石油化工学院 | Metallographic corrosive agent for extruded magnesium-lithium alloy and method for using metallographic corrosive agent for extruded magnesium-lithium alloy |
| CN107723710A (en) * | 2017-11-15 | 2018-02-23 | 北京石油化工学院 | A kind of metallographic etching agent and its application method of the pure titanium or titanium alloy of annealed state |
| CN108760451A (en) * | 2018-05-25 | 2018-11-06 | 河南科技大学 | The preparation method of magnesium alloy metallographic specimen after a kind of creep |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090120804A1 (en) * | 2005-06-10 | 2009-05-14 | Aeromet Technologies, Inc. | Apparatus, methods, and compositions for removing coatings from a metal component |
| CN102586763A (en) * | 2012-03-21 | 2012-07-18 | 成都青元泛镁科技有限公司 | Novel chemical nickel-plating method for magnesium alloy |
| CN102888606A (en) * | 2012-09-28 | 2013-01-23 | 东莞市凯昶德电子科技股份有限公司 | Chemical corrosive liquid for magnesium alloy microsection and application of chemical corrosive liquid |
-
2015
- 2015-01-26 CN CN201510036217.2A patent/CN104593774B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090120804A1 (en) * | 2005-06-10 | 2009-05-14 | Aeromet Technologies, Inc. | Apparatus, methods, and compositions for removing coatings from a metal component |
| CN102586763A (en) * | 2012-03-21 | 2012-07-18 | 成都青元泛镁科技有限公司 | Novel chemical nickel-plating method for magnesium alloy |
| CN102888606A (en) * | 2012-09-28 | 2013-01-23 | 东莞市凯昶德电子科技股份有限公司 | Chemical corrosive liquid for magnesium alloy microsection and application of chemical corrosive liquid |
Non-Patent Citations (1)
| Title |
|---|
| 王桂桢 主编: "《乳品加工技术》", 30 September 2012, 中国质检出版社 中国标准出版社 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105043843A (en) * | 2015-08-05 | 2015-11-11 | 河南科技大学 | Magnesium alloy sample corrosive agent |
| CN105925983A (en) * | 2016-06-28 | 2016-09-07 | 北京石油化工学院 | Metallographic corrosive agent for extruded magnesium-lithium alloy and method for using metallographic corrosive agent for extruded magnesium-lithium alloy |
| CN107723710A (en) * | 2017-11-15 | 2018-02-23 | 北京石油化工学院 | A kind of metallographic etching agent and its application method of the pure titanium or titanium alloy of annealed state |
| CN108760451A (en) * | 2018-05-25 | 2018-11-06 | 河南科技大学 | The preparation method of magnesium alloy metallographic specimen after a kind of creep |
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| CN104593774B (en) | 2017-08-01 |
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