CN116519425A - Corrosion method for displaying 0Cr13Ni8Mo2Al precipitation hardening stainless steel grain boundaries - Google Patents
Corrosion method for displaying 0Cr13Ni8Mo2Al precipitation hardening stainless steel grain boundaries Download PDFInfo
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- CN116519425A CN116519425A CN202310624687.5A CN202310624687A CN116519425A CN 116519425 A CN116519425 A CN 116519425A CN 202310624687 A CN202310624687 A CN 202310624687A CN 116519425 A CN116519425 A CN 116519425A
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- corroded
- stainless steel
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- 230000007797 corrosion Effects 0.000 title claims abstract description 42
- 238000005260 corrosion Methods 0.000 title claims abstract description 42
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000004881 precipitation hardening Methods 0.000 title claims abstract description 12
- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 12
- 239000010935 stainless steel Substances 0.000 title claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 238000005530 etching Methods 0.000 claims abstract description 11
- 238000004140 cleaning Methods 0.000 claims abstract description 10
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 8
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000008367 deionised water Substances 0.000 claims abstract description 8
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 8
- 238000001035 drying Methods 0.000 claims abstract description 7
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910000365 copper sulfate Inorganic materials 0.000 claims abstract description 4
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 claims abstract description 4
- 229910017604 nitric acid Inorganic materials 0.000 claims abstract description 4
- 238000002156 mixing Methods 0.000 claims abstract description 3
- 238000005406 washing Methods 0.000 claims description 9
- 238000000227 grinding Methods 0.000 claims description 3
- 238000005498 polishing Methods 0.000 claims description 3
- 230000001747 exhibiting effect Effects 0.000 claims description 2
- 239000013078 crystal Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012876 topography Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000000861 blow drying Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910052729 chemical element Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/32—Polishing; Etching
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating And Analyzing Materials By Characteristic Methods (AREA)
- ing And Chemical Polishing (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a corrosion method for displaying 0Cr13Ni8Mo2Al precipitation hardening stainless steel grain boundary, which comprises the following steps of firstly, preparing a sample to be corroded; step two, mixing 20-25 ml of hydrochloric acid with concentration of 37%, 15-20 g of copper sulfate and 75-80 ml of deionized water according to a proportion to prepare an etching solution A for standby; step three, 5 to 6ml of HF solution with the concentration of 40 percent, 15 to 20ml of alcohol, 10 to 12ml of nitric acid solution with the concentration of 68 percent and 62 to 70ml of deionized water are mixed according to a proportion to prepare an etching solution B for standby; immersing the sample to be corroded into the corrosion solution A, taking out the sample to be corroded when the corrosion surface is light gray, cleaning the sample, and drying the sample for later use; step five, when the corrosion solution B is heated to 60 ℃, immersing the sample to be corroded which is corroded by the corrosion solution A into the corrosion solution B, taking out the sample from the corrosion solution B when the corrosion surface is dark gray, and cleaning the sample; and step six, observing under a metallographic microscope. The corrosion operation is simple, the method is efficient and convenient, the grain boundary is clear, and the grain size is convenient to judge.
Description
Technical Field
The present invention relates to a corrosion method for exhibiting 0Cr13Ni8Mo2Al precipitation hardening stainless steel grain boundaries.
Background
0Cr13Ni8Mo2Al is a commonly used metal material. The number 0 here represents the carbon content in a thousandth, but below one thousandth, 0 or 00; cr is the chemical element name of Cr, and the number 13 represents that the average content of Cr is 13%. In actual production, the display method of the 0Cr13Ni8Mo2Al precipitation hardening stainless steel grain boundary adopts a conventional etchant to etch, but the grain boundary cannot be displayed effectively, and the uncertainty is brought to the determination of the grain size.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a corrosion method for displaying 0Cr13Ni8Mo2Al precipitation hardening stainless steel grain boundary, which has the advantages of simple corrosion operation, high efficiency, convenience, clear grain boundary and convenience for judging grain size.
In order to achieve the above object, the present invention provides a corrosion method for displaying 0Cr13Ni8Mo2Al precipitation hardening stainless steel grain boundaries, comprising the steps of, step one, preparing a sample to be corroded; step two, mixing 20-25 ml of hydrochloric acid with concentration of 37%, 15-20 g of copper sulfate and 75-80 ml of deionized water according to a proportion to prepare an etching solution A for standby; step three, 5 to 6ml of HF solution with the concentration of 40 percent, 15 to 20ml of alcohol, 10 to 12ml of nitric acid solution with the concentration of 68 percent and 62 to 70ml of deionized water are mixed according to a proportion to prepare an etching solution B for standby; immersing the sample to be corroded into the corrosion solution A, taking out the sample to be corroded when the corrosion surface is light gray, cleaning the sample, and drying the sample for later use; step five, when the corrosion solution B is heated to 60 ℃, immersing the sample to be corroded which is corroded by the corrosion solution A into the corrosion solution B, taking out the sample from the corrosion solution B when the corrosion surface is dark gray, and cleaning the sample; and step six, observing under a metallographic microscope.
As a further arrangement of the invention, in the fifth step, the etching solution is heated to 60 ℃ by means of a water bath.
As a further arrangement of the present invention, the washing step in the fourth and fifth steps includes a clean water washing and an alcohol washing.
As a further arrangement of the invention, the sample to be corroded in the first step is prepared from the sample through the steps of grinding, polishing, cleaning, drying and the like.
The beneficial effects of setting like this are, adopt above-mentioned scheme, this kind of corrosion method, the simple operation to the corrosive liquid configuration is also very simple, has good result of use, obtains sample crystal boundary clear, and the colour and the topography of structure hardly produce the influence to the crystal boundary.
Drawings
FIG. 1 is a grain boundary picture after etching according to an embodiment of the present invention.
Detailed Description
An embodiment of a corrosion method for displaying 0Cr13Ni8Mo2Al precipitation hardening stainless steel grain boundaries according to the present invention is shown in fig. 1: the method comprises the following steps that firstly, a sample is prepared into a sample to be corroded through grinding, polishing, cleaning and blow-drying; step two, 23ml of hydrochloric acid with 37% concentration, 16g of copper sulfate and 77ml of deionized water are mixed in proportion to prepare an etching solution A for standby; step three, 5.7ml of HF solution with the concentration of 40%, 15ml of alcohol, 12ml of nitric acid solution with the concentration of 68% and 69ml of deionized water are mixed in proportion to prepare an etching solution B for standby; immersing the sample to be corroded into the corrosion solution A, taking out the sample to be corroded when the sample to be corroded is light gray, washing the sample with water, washing the sample with alcohol, and drying the sample with a blower for later use; step five, heating the corrosion solution B to 60 ℃ through a water bath, immersing the sample to be corroded which is corroded by the corrosion solution A into the corrosion solution B, taking out the sample from the corrosion solution B when the corrosion surface is dark gray, washing the sample with water, washing the sample with alcohol, and drying the sample with a blower for later use; and step six, observing under a metallographic microscope.
The beneficial effects of setting like this are, adopt above-mentioned scheme, this kind of corrosion method, the simple operation to the corrosive liquid configuration is also very simple, has good result of use, obtains sample crystal boundary clear, and the colour and the topography of structure hardly produce the influence to the crystal boundary.
The above examples are only one of the preferred embodiments of the present invention, and the ordinary changes and substitutions made by those skilled in the art within the scope of the technical solution of the present invention are included in the scope of the present invention.
Claims (4)
1. A corrosion method for exhibiting 0Cr13Ni8Mo2Al precipitation hardening stainless steel grain boundaries, characterized by: the method comprises the following steps of firstly, preparing a sample to be corroded; step two, mixing 20-25 ml of hydrochloric acid with concentration of 37%, 15-20 g of copper sulfate and 75-80 ml of deionized water according to a proportion to prepare an etching solution A for standby; step three, 5 to 6ml of HF solution with the concentration of 40 percent, 15 to 20ml of alcohol, 10 to 12ml of nitric acid solution with the concentration of 68 percent and 62 to 70ml of deionized water are mixed according to a proportion to prepare an etching solution B for standby; immersing the sample to be corroded into the corrosion solution A, taking out the sample to be corroded when the corrosion surface is light gray, cleaning the sample, and drying the sample for later use; step five, when the corrosion solution B is heated to 60 ℃, immersing the sample to be corroded which is corroded by the corrosion solution A into the corrosion solution B, taking out the sample from the corrosion solution B when the corrosion surface is dark gray, and cleaning the sample; and step six, observing under a metallographic microscope.
2. The corrosion method for displaying 0Cr13Ni8Mo2Al precipitation hardening stainless steel grain boundaries according to claim 1, characterized by: in the fifth step, the etching solution is heated to 60 ℃ through a water bath.
3. The corrosion method for displaying 0Cr13Ni8Mo2Al precipitation hardening stainless steel grain boundaries according to claim 1, characterized by: the cleaning steps in the fourth step and the fifth step comprise clean water washing and alcohol washing.
4. The corrosion method for displaying 0Cr13Ni8Mo2Al precipitation hardening stainless steel grain boundaries according to claim 1, characterized by: the sample to be corroded in the first step is prepared by grinding, polishing, cleaning, drying and the like.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310624687.5A CN116519425A (en) | 2023-05-30 | 2023-05-30 | Corrosion method for displaying 0Cr13Ni8Mo2Al precipitation hardening stainless steel grain boundaries |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310624687.5A CN116519425A (en) | 2023-05-30 | 2023-05-30 | Corrosion method for displaying 0Cr13Ni8Mo2Al precipitation hardening stainless steel grain boundaries |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116519425A true CN116519425A (en) | 2023-08-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310624687.5A Pending CN116519425A (en) | 2023-05-30 | 2023-05-30 | Corrosion method for displaying 0Cr13Ni8Mo2Al precipitation hardening stainless steel grain boundaries |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116519425A (en) |
-
2023
- 2023-05-30 CN CN202310624687.5A patent/CN116519425A/en active Pending
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