CN2284393Y - Metal atmospheric corrosion quasi-in-situ laser laman spectrum pool - Google Patents
Metal atmospheric corrosion quasi-in-situ laser laman spectrum pool Download PDFInfo
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- CN2284393Y CN2284393Y CN 96238865 CN96238865U CN2284393Y CN 2284393 Y CN2284393 Y CN 2284393Y CN 96238865 CN96238865 CN 96238865 CN 96238865 U CN96238865 U CN 96238865U CN 2284393 Y CN2284393 Y CN 2284393Y
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- atmospheric corrosion
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Abstract
The utility model relates to a metal atmospheric corrosion quasi-in-situ laser Raman spectrum pool. The utility model is characterized in that the spectrum pool is a hermetic sample cavity with a light window. The utility model uses the advantage that the laser Raman spectrum detects the change of the limiting surface for establishing the quasi-in-situ information that the laser Raman spectrum is used for obtaining the atmospheric corrosion process, and the utility model has the advantage of exact and actual response of the atmospheric corrosion state.
Description
The utility model relates to the metal atmospheric corrosion to be measured, and the accurate original position laser Raman spectroscopy of a kind of metal atmospheric corrosion pond is provided especially.
In the atmospheric corrosion process of metal, metal/contact bed of aqueous layer/atmosphere formation plays crucial effects as thin as a wafer, because it is determining the speed and the mechanism of corrosion reaction, in order to study the behavior of monitoring atmospheric corrosion, just need to survey the information that changes and act on this interface, in the past few decades, X-ray photoelectric spectrum (XPS), low-energy electron diffraction (LEED), secondary ion mass spectrum (SIMS) and Auger electron spectroscopy (AES) etc. are by the atmospheric corrosion with dried research metal, everything is playing a significantly greater role aspect the atmospheric corrosion research that promotes metal, yet, these methods all are ex situs, the generation that is corrosion process is to carry out under different occasions or condition with test, transferring to sample in the process of test condition by etching condition, be easy to take place some interference analysis result's variation, even test condition and etching condition difference too great disparity (needing high vacuum during as test, then is the atmospheric conditions that higher levels of humidity and certain etchant gas component are arranged during corrosion) make distortion as a result or give the conclusion that makes mistake.Therefore, development original position analytical technology is the inevitable requirement that comprises the metal erosion development of atmospheric corrosion, people such as D.Persson (D.Persson, C.Leygraf, J.Electrochem.Soc., 140 (5), 1993:1256) at first set up the atmospheric corrosion research system that the In-situ Infrared reflection-absorption is composed (IRAS), infrared spectrum is used for the original position research of this aspect, though the interference of water is owing to atmospheric corrosion is that the process in the liquid film influences less as thin as a wafer, but optical window will be used the salt sheet, and different research systems will adopt the salt sheet of different infrared absorption limits, also will take in may disturbing of corrosion process the salt sheet in addition.Laser Raman spectroscopy as a kind of advantage of instrument analysis technology means mainly is: 1) Raman signal of water very a little less than, and on certain surface, has surperficial enhancement effect, lip-deep signal is strengthened or outstanding especially, so, be a kind of comparatively ideal means of studying solid/water interface; 2) because excitation line adopts is laser, be easier to find suitable optical window material, the system of sealing can realize research by optical window, and this makes it have ample scope for one's abilities aspect the research of metal erosion mechanism.But up to the present, do not see the report that laser Raman spectroscopy is used as yet in the research of metal atmospheric corrosion.
The purpose of this utility model is to utilize laser Raman spectroscopy to survey the advantage of variation aspect, interface, sets up the method that can obtain the accurate original position information of atmospheric corrosion process with laser Raman spectroscopy.
The utility model provides the accurate original position laser Raman spectroscopy of a kind of metal atmospheric corrosion pond, it is characterized in that: spectrum tool is the sample cavity (1) of close group, and optical window (3) is housed on the cavity (1), and sets out air intake (8) (9), goes out to install valve on the air intake additional.Sample cavity can be made placement and equally distributed any form of etchant gas and the shape that helps sample, can be single structure, also can be multiplet,
Can make movable (take off easily and set up) at least one optical window, both make optical window, also can open sample in addition and put into mouthful (simple function) with also putting into a mouthful use as sample.The utility model can be set up one or more atmospheric corrosion sample cavities, this chamber has independently switch valve respectively at the entrance and exit of etchant gas, and be equipped with and incide the surface of sample and the optical window of the Raman diffused light outgoing that scatters thus for laser, this atmospheric corrosion sample cavity and breadboard controlled atmosphere etching system are used, the chamber that metal sample has been installed is concatenated into carries out gas attack in the controlled atmosphere etching system, when need are done the Raman spectrum detection, the entrance and exit of the etchant gas on this atmospheric corrosion sample cavity is closed, to keep the stable of sample corrosion environment, and can be according to the needs of practical study system, the volume of sample cavity is done greatly, to satisfy the requirement of the bigger corrosion environment stability of sample, this chamber moved on to carry out the Raman test analysis on the Raman spectrometer sample stage, can again this atmospheric corrosion sample cavity be concatenated in the controlled atmosphere etching system after the test, realize monitoring analysis and research the atmospheric corrosion process of metal sample.
Compare with metal atmospheric corrosion investigative technique in the past, the technology of using the utility model to provide has following advantage:
1. because when the metal Raman is tested, closed the etchant gas entrance and exit of sample cavity, at Raman in the sampling time, the environment on metal sample surface does not have significant change in the chamber, the Raman information that is obtained is the original position level substantially, is particularly suitable for studying the corrosion mechanism and the corrosion inhibiter mechanism of action;
2. the test of the controlled corrosion of sample and Raman is well-separated, and the service efficiency that can hinder Raman spectroscopy because of the long of sample corrosion process can not studied with a step atmospheric corrosion sample cavity simultaneously yet;
3. because the exciting light of laser raman is a laser, therefore, can choose the optical window material of desirable atmospheric corrosion sample cavity;
4. because under certain conditions, can obtain the Raman signal that the surface strengthens, be particularly conducive to some metal materials of research and be subjected to behavior and the effect situation of some etchant gas component in the initial period that corrosion takes place.
By embodiment in detail the utility model is described in detail below in conjunction with accompanying drawing
Accompanying drawing 1 is the accurate original position laser Raman spectroscopy of monochromatic light window metal atmospheric corrosion pond;
Accompanying drawing 2 is the accurate original position laser Raman spectroscopy of single outlet monochromatic light window metal atmospheric corrosion pond;
Accompanying drawing 3 is the two accurate original position laser Raman spectroscopy of optical window metal atmospheric corrosion ponds.
Embodiment 1
Accompanying drawing 1 is to collect under the condition of Raman instrument that Raman diffused lights and Raman instrument sample stage are levels at 180 °, the structural representation of atmospheric corrosion sample cavity, (1) is cavity, using the parallel column teflon of bottom surface makes, open a cylindrical cavity (2) from the top of (1) as the corrosion chamber, corrosion chamber (2) is made of two coaxial cylindrical space segments, stepped, the bottom be used to place metal sample, the shape and size of metal sample cooperate with this part, make the placement of sample firm; The big column space on top, be used for filling and circulation corrosive gas, with the plane quartz slide (3) of radius greater than cylindrical cavity part radius, and by silicone rubber gasket (4) be covered in chamber (2) above, (3) fixing is pressed in the top of (3) and the through hole by (5) outer part with plastics trim ring (5), directly be screwed in the upper surface of (1) with screw, (6) and (7) be the entrance and exit that is opened on the corrosive gas on the sidewall of chamber (2), (6) and (7) partly be helicitic texture in the outer openings of cavity (1), be used for outwards connecting conduction pipe and valve, (8) and (9) be mounted in etchant gas inlet (6) and export switch valve on (7), all be that atmospheric corrosion resistance can't produce the airtight valve that disturbs to experiment, (8) and (9) add the side of inertia sealing gasket joining in cavity (1) with the joint component that (6) and (7) external screw-thread cooperates.
When experimentizing, back out fixing with the screw on the trim ring (5), take off trim ring (5) and quartzy slide (3), the metal material sample of research to be analyzed is embedded in the lower recess of chamber (2), load onto quartzy slide (3) then and use trim ring (5) and screw retention, again whole atmospheric corrosion sample cavity is connected into the controlled atmosphere etching system, open valve (8) and (9), after reaching predetermined etching time, respectively shut-off valve (8) and (9) takes off whole atmospheric corrosion sample cell, and directly keeps flat (quartz window faces up) carry out Raman analysis research on Raman instrument sample stage, continue to carry out Raman analysis research after the corrosion as need, then repeat above operation.
Only there is one as different from Example 1 and goes out air intake.
When the collecting direction of excitation laser and Raman diffused light is not 180 ℃, to adopt two optical windows at least, accompanying drawing 2 has provided the embodiment in the accurate original position atmospheric corrosion raman study pond of two optical windows.In accompanying drawing 2, (1) is cavity, synthetic material by anti-experiment condition corrosion is made (as teflon or organic glass etc.): (3) are quartzy windows: (2) are the corrosion chambeies, and sample is positioned on the bottom surface, and enough spaces is arranged with the filling corrosive gas; (4) be packing washer; (5) be the fixing trim ring of optical window piezoid (2), with screw retention on cavity (1), (8) and (9) be respectively inlet valve and the outlet valve that is connected the etchant gas on the sample cavity, be the airtight valve that gas attack can't influence result of study under the anti-experiment condition, whole atmospheric corrosion Raman pond can be connected in the laboratory controlled atmospheric corrosion system by these two valves.
Claims (1)
1. the accurate original position laser Raman spectroscopy of metal atmospheric corrosion pond, it is characterized in that: this spectrum tool is the sample cavity (1) of close group, and optical window (3) is housed on the cavity (1), and sets out air intake (8) (9), goes out to install valve on the air intake additional.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96238865 CN2284393Y (en) | 1996-10-24 | 1996-10-24 | Metal atmospheric corrosion quasi-in-situ laser laman spectrum pool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96238865 CN2284393Y (en) | 1996-10-24 | 1996-10-24 | Metal atmospheric corrosion quasi-in-situ laser laman spectrum pool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2284393Y true CN2284393Y (en) | 1998-06-17 |
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ID=33914057
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96238865 Expired - Fee Related CN2284393Y (en) | 1996-10-24 | 1996-10-24 | Metal atmospheric corrosion quasi-in-situ laser laman spectrum pool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2284393Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100347534C (en) * | 2002-11-15 | 2007-11-07 | 阿特拉斯材料测试技术有限责任公司 | Accelerated weathering apparatus having sealed weathering chamber |
| CN112748101A (en) * | 2020-12-29 | 2021-05-04 | 中国南方电网有限责任公司超高压输电公司柳州局 | High-altitude electric power material corrosive monitoring system based on optical fiber Raman spectrometer |
-
1996
- 1996-10-24 CN CN 96238865 patent/CN2284393Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100347534C (en) * | 2002-11-15 | 2007-11-07 | 阿特拉斯材料测试技术有限责任公司 | Accelerated weathering apparatus having sealed weathering chamber |
| CN112748101A (en) * | 2020-12-29 | 2021-05-04 | 中国南方电网有限责任公司超高压输电公司柳州局 | High-altitude electric power material corrosive monitoring system based on optical fiber Raman spectrometer |
| CN112748101B (en) * | 2020-12-29 | 2024-05-10 | 中国南方电网有限责任公司超高压输电公司柳州局 | High-altitude electric power material corrosive monitoring system based on optical fiber Raman spectrometer |
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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 |