CN2395262Y - Laser ramen spectrum device for metal local corrision - Google Patents
Laser ramen spectrum device for metal local corrision Download PDFInfo
- Publication number
- CN2395262Y CN2395262Y CN 99245650 CN99245650U CN2395262Y CN 2395262 Y CN2395262 Y CN 2395262Y CN 99245650 CN99245650 CN 99245650 CN 99245650 U CN99245650 U CN 99245650U CN 2395262 Y CN2395262 Y CN 2395262Y
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- CN
- China
- Prior art keywords
- corrosion
- laser
- laser raman
- metal local
- raman spectroscopy
- 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
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- 239000002184 metal Substances 0.000 title claims abstract description 17
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 17
- 238000001228 spectrum Methods 0.000 title 1
- 238000005260 corrosion Methods 0.000 claims abstract description 45
- 230000007797 corrosion Effects 0.000 claims abstract description 45
- 238000001069 Raman spectroscopy Methods 0.000 claims description 23
- 230000003287 optical effect Effects 0.000 claims description 11
- 238000001237 Raman spectrum Methods 0.000 abstract description 6
- 238000011160 research Methods 0.000 description 9
- 238000012360 testing method Methods 0.000 description 7
- 238000004088 simulation Methods 0.000 description 6
- 239000007769 metal material Substances 0.000 description 5
- 239000004809 Teflon Substances 0.000 description 3
- 229920006362 Teflon® Polymers 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000011065 in-situ storage Methods 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 230000005764 inhibitory process Effects 0.000 description 2
- 238000011835 investigation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003595 spectral effect Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002848 electrochemical method Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000011066 ex-situ storage Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- TVDSBUOJIPERQY-UHFFFAOYSA-N prop-2-yn-1-ol Chemical compound OCC#C TVDSBUOJIPERQY-UHFFFAOYSA-N 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000004611 spectroscopical analysis Methods 0.000 description 1
- 238000004416 surface enhanced Raman spectroscopy Methods 0.000 description 1
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- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
Abstract
The utility model relates to a laser raman spectrum device for metal local corrosion. The utility model is characterized in that a sample sheet and a light window are parallelly assembled by a fastening piece to form the laser raman spectrum device, the distance between the parallel sample sheet and the light window ranges from 0.02 mm to 0.2 mm, and the area of the sample sheet is larger than the area of the light window. By the utilization of the utility model, raman spectrum can be used for researching the original position or the accurate original position of local corrosion.
Description
The utility model relates to the detection method of metal erosion, and a kind of laser Raman spectroscopy device of in situ detection metal slit corrosion is provided especially.
Local corrosion mainly comprises spot corrosion (Pitting) and crevice corrosion, and both have many similarities, all is to be prerequisite to form occluded corrosion cell; Because special geometric form or corrosion product are in the slit, the accumulation in pit or crackle exit, make the passage obturation, limited the diffusion of corrosive medium, thereby formed the occluded corrosion cell corrosion, yet, local corrosion mechanism under different materials and medium and the different condition is not quite similar, get these mechanism clear to determining that effectively the protection principle is vital, at present, to the research of local corrosion mainly with sign and the method for testing or the electrochemical method (D.B.Alexander of ex situ, A.A.Moccar, " Evaluation of CorrosionInhibitors for Component Cooling Water Systems ", Corrosion, 49 (11), it is main 1993:921) waiting, being difficult to provide local corrosion takes place, the direct information that evolution changes, so be unfavorable for very much the research of local corrosion mechanism, laser Raman spectroscopy is a kind of instrument that can provide the interface change information on molecular level, in recent years at the inhibition mechanism (K.Aramaki of the corrosion inhibiter of some general corrosion, E, Fujioka, " SERS Studies on Inhibition Mechanism of Propargyl Alcohol for IronCorrosion in Hydrochloric Acid ", Corrosion, 52 (2), 1996:83) with at the formation mechanism (J.C.Hamilton of some general corrosion product, J.C.Farmer, R.J.Anderson, " InsituRaman Spectroscopy of Anodic Films Fromed on Copper and Silver inSodium Hydroxide Solution " J.Electrochem.Soc., 133 (4), good effect has been brought into play in discussion aspect 1986:739), and present many manufacturers all have 180 ° of commodity Raman spectroscopy instrument of collecting the light path system of Raman diffused light to sell.But with Raman spectrum local corrosion is carried out not appearing in the newspapers as yet of original position or accurate original position research for last up till now.
The purpose of this utility model be to provide a kind of with Raman spectrum to local corrosion particularly crevice corrosion detect the device of research, promptly a kind of laser Raman spectroscopy device of metal local corrosion.
The utility model provides a kind of laser Raman spectroscopy device of metal local corrosion, it is characterized in that: this device is assembled by securing member (3) is parallel with optical window (2) by coupons (1), distance is between 0.02mm～0.2mm between coupons (1) and optical window (2), and coupons (1) area is greater than optical window (2) area.Utilize the utility model Raman spectrum can be used for the original position or the accurate original position research of local corrosion, by embodiment in detail the utility model is described in detail below in conjunction with accompanying drawing.
Accompanying drawing 1 is the fastening metal local corrosion laser Raman spectroscopy device working state figure of single screw;
Accompanying drawing 2 is two fastening metal local corrosion laser Raman spectroscopy device synoptic diagram of screw;
The metal local corrosion laser Raman spectroscopy device synoptic diagram that accompanying drawing 3 is solid for anchor clamps clench.
Embodiment 1
Accompanying drawing 1 is the principle of work synoptic diagram of a kind of embodiment of the present utility model, and (6) are corrosion test pond housings; (7) be the etchant solution of splendid attire in (6); (5) be to go up the parallel teflon base of bottom surface, the one side has a screw perpendicular to the bottom surface, and (5) are positioned over the bottom of (6); (1) be the sheet test sample that is studied metal material, the one side has a through hole, (4) be positioned at (5) above; (4) be the simulation slit control pad that teflon is made, the one side has a through hole perpendicular to the bottom surface, this is that the different pad of a series of thickness can be changed, each experimental work, can only use a slice, or the multi-disc use that is superimposed together, (2) are the optical flat eyeglasses that printing opacity (seeing through laser and Raman diffused light as excitation source) there is no fluorescence interference, the one side has a through hole; (3) securing member is the screw made from teflon, with the screw mating reaction on (5), (3) pass the through hole of optical mirror slip (2), the through hole of simulation slit control pad (4), through hole on the metal material sample (1), be fastened on the screw of base (5), make (5), (1), (4), (2), (3) become one, and have formed the simulation slit between optical mirror slip (2) and metal material (1), in practical study, according to the needs of research system, change the simulation slit control pad (4) of different-thickness, the simulation slit of structure different size.
In the etchant solution medium, the part of metal material (1) in the slit constitutes an anode and a negative electrode of plug battery respectively with the part that is exposed to the outside, slit, because the slit is by constituting between the optical window of printing opacity and the metal material sample, so, can shine directly into the slit on formed corrosion product or the corrosion inhibiter rete by the excitation laser of injecting from the top of (2), collect the Raman light that scatters in identical direction, carry out follow-up study with this.
With this utility model, can carry out the complete in-situ Raman spectral investigation of crevice corrosion, also can carry out accurate in-situ Raman spectral investigation, as shown in Figure 1, under selected experiment condition, in corrosion test pond (6), test button (1) and other component groups are installed, and add etchant solution (7) to not having height of excessive erosion slit, behind the etching time of regulation, this corrosion test pond is directly placed on the sample stage of Raman spectrometer, carry out the original position analysis and research, the research mode of complete original position that Here it is if after finishing corrosion process, takes out the part of sample and assembly composition from test tank, place on the sample stage of Raman spectrometer and study, because corrosion product is left in the simulation slit together with etchant solution, change but simulate slit corrosion environment in addition, so this mode is accurate original position research mode.
As shown in Figure 2, make securing member (3) with two screws as different from Example 1, and do not have base.
As shown in Figure 3, securing member (3) is anchor clamps as different from Example 2.
Claims (7)
1. the laser Raman spectroscopy device of a metal local corrosion, it is characterized in that: this device is assembled by securing member (3) is parallel with optical window by coupons (1), distance is between 0.02mm～0.2mm between coupons (1) and optical window (2), and coupons (1) area is greater than optical window (2) area.
2. by the laser Raman spectroscopy device of the described metal local corrosion of claim 1, it is characterized in that: accompany slit pad (4) between coupons (1) and optical window (2).
3. by the laser Raman spectroscopy device of claim 1 or 2 described metal local corrosions, it is characterized in that: securing member (3) is a screw.
4. by the laser Raman spectroscopy device of claim 1 or 2 described metal local corrosions, it is characterized in that: securing member (3) is anchor clamps.
5. by the laser Raman spectroscopy device of claim 1 or 2 described metal local corrosions, it is characterized in that: base (5) is installed in coupons (1) bottom.
6. by the laser Raman spectroscopy device of the described metal local corrosion of claim 3, it is characterized in that: base (5) is installed in coupons (1) bottom.
7. by the laser Raman spectroscopy device of the described metal local corrosion of claim 4, it is characterized in that: base (5) is installed in coupons (1) bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99245650 CN2395262Y (en) | 1999-09-22 | 1999-09-22 | Laser ramen spectrum device for metal local corrision |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99245650 CN2395262Y (en) | 1999-09-22 | 1999-09-22 | Laser ramen spectrum device for metal local corrision |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2395262Y true CN2395262Y (en) | 2000-09-06 |
Family
ID=34031493
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99245650 Expired - Fee Related CN2395262Y (en) | 1999-09-22 | 1999-09-22 | Laser ramen spectrum device for metal local corrision |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2395262Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104011533A (en) * | 2011-11-25 | 2014-08-27 | 国立大学法人群马大学 | Reaction vessel for Raman spectrophotometry, and Raman spectrophotometry method using same |
| CN109297890A (en) * | 2018-09-26 | 2019-02-01 | 中石化（洛阳）科技有限公司 | The experimental rig and method of live crevice corrosion research |
| CN112697686A (en) * | 2020-12-04 | 2021-04-23 | 中国科学院金属研究所 | Test device and method for rapidly evaluating titanium alloy gap corrosion |
-
1999
- 1999-09-22 CN CN 99245650 patent/CN2395262Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104011533A (en) * | 2011-11-25 | 2014-08-27 | 国立大学法人群马大学 | Reaction vessel for Raman spectrophotometry, and Raman spectrophotometry method using same |
| CN109297890A (en) * | 2018-09-26 | 2019-02-01 | 中石化（洛阳）科技有限公司 | The experimental rig and method of live crevice corrosion research |
| CN112697686A (en) * | 2020-12-04 | 2021-04-23 | 中国科学院金属研究所 | Test device and method for rapidly evaluating titanium alloy gap corrosion |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |