CN113834768A - Method for rapidly determining stabilization time of weather-resistant steel rust layer by using resistance method - Google Patents
Method for rapidly determining stabilization time of weather-resistant steel rust layer by using resistance method Download PDFInfo
- Publication number
- CN113834768A CN113834768A CN202111033096.8A CN202111033096A CN113834768A CN 113834768 A CN113834768 A CN 113834768A CN 202111033096 A CN202111033096 A CN 202111033096A CN 113834768 A CN113834768 A CN 113834768A
- Authority
- CN
- China
- Prior art keywords
- weathering steel
- time
- corrosion
- rust layer
- tested
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 55
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 title claims abstract description 34
- 230000006641 stabilisation Effects 0.000 title claims abstract description 19
- 238000011105 stabilization Methods 0.000 title claims abstract description 19
- 229910000831 Steel Inorganic materials 0.000 title description 5
- 239000010959 steel Substances 0.000 title description 5
- 229910000870 Weathering steel Inorganic materials 0.000 claims abstract description 101
- 230000007797 corrosion Effects 0.000 claims abstract description 80
- 238000005260 corrosion Methods 0.000 claims abstract description 80
- 238000012360 testing method Methods 0.000 claims abstract description 20
- 238000005507 spraying Methods 0.000 claims description 14
- 230000008859 change Effects 0.000 claims description 11
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 10
- 238000004806 packaging method and process Methods 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 6
- 239000011780 sodium chloride Substances 0.000 claims description 5
- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 239000000853 adhesive Substances 0.000 claims description 2
- 230000001070 adhesive effect Effects 0.000 claims description 2
- 238000011156 evaluation Methods 0.000 abstract description 4
- 238000012544 monitoring process Methods 0.000 abstract description 2
- 229910052751 metal Inorganic materials 0.000 description 9
- 239000002184 metal Substances 0.000 description 9
- 239000004973 liquid crystal related substance Substances 0.000 description 8
- 239000000463 material Substances 0.000 description 8
- 230000000087 stabilizing effect Effects 0.000 description 3
- 238000002441 X-ray diffraction Methods 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008261 resistance mechanism Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000004580 weight loss Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
- G01N17/006—Investigating resistance of materials to the weather, to corrosion, or to light of metals
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/041—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Pathology (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Immunology (AREA)
- Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Ecology (AREA)
- Environmental & Geological Engineering (AREA)
- Environmental Sciences (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The embodiment of the invention discloses a method for rapidly determining the stability time of a weathering steel rust layer by using a resistance method, belonging to the technical field of the stability evaluation of the weathering steel rust layer. The method of the invention comprises the following steps: cutting the weathering steel to be measured into a strip shape to prepare a weathering steel sample to be measured, and measuring the initial resistance value R of the weathering steel sample to be measured0The length L, the width a and the height b of the weathering steel sample to be measured; carrying out corrosion test on the weathering steel sample to be tested, measuring and recording the resistance value R of the weathering steel sample to be tested at the corresponding time point ttAnd correspondingly calculating the corrosion rate V of the corresponding time point tt(ii) a And (5) drawing a curve of the corrosion rate changing along with time, and determining the stabilization time of the weathering steel rust layer according to the inflection point of the curve. Compared with the traditional evaluation method, the method has the advantages of convenience and rapidness in operation, capability of continuous monitoring, accurate result, low cost and the like, and can be used in a service environment.
Description
Technical Field
The invention belongs to the technical field of the stability evaluation of a weathering steel rust layer, and relates to a method for rapidly determining the stability time of the weathering steel rust layer by using a resistance method.
Background
The weather-resistant steel has excellent corrosion resistance in the marine atmospheric environment, the atmospheric corrosion resistance of the weather-resistant steel is 2-8 times that of common carbon steel, and the longer the service time is, the more prominent the corrosion resistance is. The main corrosion resistance mechanism is to slow down corrosion by forming a stable dense protective rust layer. Because the corrosion resistance of the steel matrix is poor, whether a rust layer with good corrosion resistance is formed on the surface of the weathering steel or not, namely whether the weathering steel is stable or not, is the key for evaluating the corrosion resistance of the weathering steel.
The corrosion resistance of the weathering steel is closely related to the structure, components and electrochemical behavior of a rust layer, and in order to evaluate the stability of the weathering steel, the conventional evaluation means mainly comprises an XRD (X-ray diffraction) method, a section method, a weight loss method and the like, and the methods are complex in operation, consume time, damage a matrix and need offline operation, and the time required by the stability of the weathering steel cannot be accurately determined.
Disclosure of Invention
The invention solves the technical problem that the existing means for evaluating the stability of the rust layer of the weathering steel cannot accurately determine the time required by the stability of the weathering steel. The invention provides a method for rapidly determining the stabilization time of a weathering steel rust layer by using a resistance method, which can obtain data such as corrosion rate of weathering steel and the like by using the resistance method within tens of seconds, can continuously monitor, and is a method for continuously, online, accurately and rapidly testing the corrosion rate of weathering steel and determining the stabilization time of weathering steel.
In order to solve the technical problems, the invention provides the following technical scheme:
one of the purposes of the invention is to provide a method for rapidly determining the stabilizing time of a weathering steel rust layer by using a resistance method, which comprises the following steps:
1. a method for rapidly determining the stabilization time of a weathering steel rust layer by using a resistance method is characterized by comprising the following steps:
(1) cutting the weathering steel to be tested into a strip shape to prepare a weathering steel sample to be tested, and measuring the initial resistance value R of the weathering steel sample to be tested0The length L, the width a and the height b of the weathering steel sample to be measured;
(2) packaging the weathering steel sample to be tested, only leaving one surface as the surface to be corroded, exposing the surface to be corroded in a corrosion environment for corrosion test, and correspondingly, keeping a fixed time periodMeasuring and recording the resistance value R of the weathering steel sample to be measured at the interval point ttAnd correspondingly calculating the corrosion rate V of the corresponding time point tt；
The surface to be corroded is a plane corresponding to the length L and the width a of the weathering steel sample to be detected; only changing the value of the height b in the corrosion process;
(3) and (5) drawing a curve of the corrosion rate changing along with time, and determining the stabilization time of the weathering steel rust layer according to the inflection point of the curve.
In the invention, the strip-shaped weathering steel sample to be measured can be a strip metal, can also be a round metal wire, can also be a cuboid metal, is convenient for installation and calculation and is usually made into a cuboid shape; or the strip-shaped weathering steel sample to be measured can be bent to be made into a bending shape so as to reduce the space occupation. Since the resistance of a metal is inversely proportional to the cross-sectional area when the length is constant, the resistance of the metal increases when the cross-sectional area decreases due to corrosion. Therefore, the change of the sectional area can be calculated by monitoring the change of the resistance value, and the corrosion rate can be further calculated, so that the stability of the weathering steel rust layer can be reflected from the change of the corrosion rate.
Preferably, the first and second liquid crystal materials are,
the corrosion test is accelerated corrosion by adopting a spraying mode or accelerated corrosion by outdoor exposure.
Preferably, the first and second liquid crystal materials are,
the spraying mode is that sodium chloride is added into the spraying water, the spraying frequency is that the sodium chloride is sprayed once every 2 to 3 hours, and the spraying time is 1 to 2 minutes each time.
Preferably, the first and second liquid crystal materials are,
the total time of the corrosion test is 3-4 months;
the time period with fixed intervals is that the data are measured every 1-24 hours.
Preferably, the first and second liquid crystal materials are,
the time period with fixed intervals is that the data are measured every 4-8 hours.
Preferably, the first and second liquid crystal materials are,
the corrosion rate VtThe calculation formula of (2) is as follows:
Hcrepresents the depth of the etch;
the depth of corrosion HcThe calculation formula of (2) is as follows:
preferably, the first and second liquid crystal materials are,
the inflection point refers to that the curve of the corrosion rate relative to the time tends to be flat after a certain time point, and the time point at the moment is the inflection point.
Preferably, the first and second liquid crystal materials are,
by gradual, it is meant that the rate of change of the corrosion rate is within 5% per hundred hours.
Preferably, the first and second liquid crystal materials are,
the method for packaging the weathering steel sample to be tested comprises the steps of inlaying the weathering steel sample to be tested in non-conductive curable resin or adhesive, leaving only the surface to be corroded to be exposed in a corrosive environment for corrosion test, and taking the other surface vertical to the surface to be corroded as the section of the weathering steel sample to be tested.
The resistance method is a measuring method for determining the corrosion amount and corrosion rate of metal by measuring the resistance change of the metal in the corrosion process according to the principle that the cross-sectional area of the metal is correspondingly increased due to the reduction of the resistance caused by corrosion consumption. The method is applied to determining the stabilizing time of the weathering steel. Firstly, the initial resistance value and the sectional area of a sample of the weathering steel and the resistance in the corrosion process need to be measured, the time is recorded, the corrosion rate of the weathering steel can be obtained through calculation, and the stable time of the weathering steel rust layer can be determined according to the change curve of the corrosion rate along with the time.
According to the formula of the metal resistance, the strip resistance wire comprises the following components: wherein R is0For resistance, ρ is the resistivity of the weathering steel, L is the weathering steel length, a is the weathering steel width, and b is the weathering steel height.
When the weathering steel is not corroded, the corrosion-resistant steel,
after the weathering steel is corroded in a corrosive environment for t time, the sectional area of the sample changes, wherein RtResistance of weathering steel at time t, btThe height of the weathering steel at the time t is determined, only one surface of the weathering steel sample to be tested is left to be used as a surface to be corroded to be exposed in a corrosion environment for corrosion test, and the surface to be corroded is a plane corresponding to the length L and the width a of the weathering steel sample to be tested; during the etching process, only the value of the height b is changed to bt(ii) a Since the sample is etched only on the surface to be etched, the sample is not etched and thinned in the width direction, and the value a is kept constant.
From the above formula, it can be seen that the weathering steel has different corrosion degrees in the corrosion environment, the corresponding cross-sectional area of the sample changes, the corresponding resistance value also changes, and the corresponding corrosion rate also correspondingly changes, when the corrosion rate tends to be stable, the corresponding cross-sectional area of the sample does not change substantially, the corresponding resistance value also does not change substantially, and the corresponding corrosion rate also does not change substantially, which indicates that a rust layer with good corrosion resistance has been formed on the surface of the weathering steel, i.e., that the rust layer of the weathering steel has been stabilized, so that the time for stabilizing the weathering steel can be effectively determined.
The technical scheme provided by the embodiment of the invention at least has the following beneficial effects:
according to the invention, the corresponding corrosion rate is obtained and the stable time of the corrosion rate is determined by measuring the resistance change of the weathering steel.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic diagram of a weathering steel sample to be tested according to the present invention;
FIG. 2 is a graph showing the corrosion rate of the weathering steel of example 1 of the present invention as a function of time.
The method comprises the following steps of 1-length L of the weathering steel sample to be detected, 2-width a of the weathering steel sample to be detected, 3-height b of the weathering steel sample to be detected, 4-surface to be corroded of the weathering steel sample to be detected, and 5-section of the weathering steel sample to be detected. ,
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
Example 1
A method for rapidly determining the stabilization time of a weathering steel rust layer by using a resistance method comprises the following steps:
step (1): cutting the weathering steel sample to be tested into a strip shape, then simply cleaning the weathering steel sample to be tested to prepare the weathering steel sample to be tested, as shown in fig. 1, measuring the length, width, height and initial resistance of the sample (the length L, width a and height b of the weathering steel sample to be tested are respectively 40cm in length, 2mm in width and 2mm in height, R09.635 milliohms).
Step (2): and (2) packaging the weathering steel sample to be tested measured in the step (1), and only leaving one surface as a surface 4 to be corroded to be exposed in a corrosion environment for corrosion test, wherein the packaging method comprises the steps of embedding the weathering steel sample to be tested in non-conductive curable resin, only leaving the surface to be corroded to be exposed in the corrosion environment for corrosion test, and taking the other surface vertical to the surface to be corroded as a section 5 (namely S or S) of the weathering steel sample to be testedt)，
The surface to be corroded 4 is a plane corresponding to the length L1 and the width a 2 of the weathering steel sample to be tested; only the value of the height b 3 is changed during the etching process;
connecting the weathering steel sample to be tested with a resistance test meter, measuring and recording the resistance value R of the weathering steel sample to be tested at corresponding time points t at fixed time intervalstAnd correspondingly calculating the corrosion depth H of the weathering steel sample to be measured at the corresponding time point tcAnd the corrosion rate V of the corresponding point in time tt；
Depth of etch HcThe calculation formula of (2) is as follows:
the corrosion rate VtThe calculation formula of (2) is as follows:
setting parameters of the test meter, writing equations of the corrosion depth and the corrosion rate into the test meter, and transmitting data of the test meter into a computer.
The corrosion test conditions are that the weathering steel sample is placed outdoors facing south at 45 degrees, accelerated corrosion is carried out in a spraying mode, a certain amount of sodium chloride is added into spraying water for shortening the formation time of a rust layer, the spraying frequency is once every 2 hours, and the spraying time is 1 minute each time.
The fixed time period means that the resistance value is measured every 6h and the corrosion rate is calculated. The total time of the corrosion test was 3 months.
And (3): the corrosion rate was plotted against time, as shown in FIG. 2, from which it can be seen that: the corrosion rate of the weathering steel is rapidly increased along with the increase of time about 180 hours before the corrosion test, which indicates that the rust layer is not stable; during about 180-; the corrosion rate is basically stable after 320h, which indicates that the rust layer of the weathering steel basically reaches a stable state, and the stabilization time required for determining the rust layer of the weathering steel is 320 h.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (9)
1. A method for rapidly determining the stabilization time of a weathering steel rust layer by using a resistance method is characterized by comprising the following steps:
(1) cutting the weathering steel to be tested into a strip shape to prepare a weathering steel sample to be tested, and measuring the initial resistance value R of the weathering steel sample to be tested0The length L, the width a and the height b of the weathering steel sample to be measured;
(2) packaging the weathering steel sample to be tested, only leaving one surface as the surface to be corroded to be exposed in a corrosion environment for corrosion test, measuring and recording the resistance value R of the weathering steel sample to be tested at corresponding time points t at fixed time periodstAnd correspondingly calculating the corrosion rate V of the corresponding time point tt；
The surface to be corroded is a plane corresponding to the length L and the width a of the weathering steel sample to be detected; only changing the value of the height b in the corrosion process;
(3) and (5) drawing a curve of the corrosion rate changing along with time, and determining the stabilization time of the weathering steel rust layer according to the inflection point of the curve.
2. The method for rapidly determining the stabilization time of the weathering steel rust layer by the electrical resistance method according to claim 1,
the corrosion test is accelerated corrosion by adopting a spraying mode or accelerated corrosion by outdoor exposure.
3. The method for rapidly determining the stabilization time of the weathering steel rust layer by the electrical resistance method according to claim 2,
the spraying mode is that sodium chloride is added into the spraying water, the spraying frequency is that the sodium chloride is sprayed once every 2 to 3 hours, and the spraying time is 1 to 2 minutes each time.
4. The method for rapidly determining the stabilization time of the weathering steel rust layer by the electrical resistance method according to claim 1,
the total time of the corrosion test is 3-4 months;
the time period with fixed intervals is that the data are measured every 1-24 hours.
5. The method for rapidly determining the stabilization time of the weathering steel rust layer by the electrical resistance method according to claim 1,
the time period with fixed intervals is that the data are measured every 4-8 hours.
6. The method for rapidly determining the stabilization time of the weathering steel rust layer by the electrical resistance method according to claim 1,
the corrosion rate VtThe calculation formula of (2) is as follows:
Hcrepresents the depth of the etch;
the depth of corrosion HcThe calculation formula of (2) is as follows:
7. the method for rapidly determining the stabilization time of the weathering steel rust layer by the electrical resistance method according to claim 1,
the inflection point refers to that the curve of the corrosion rate relative to the time tends to be flat after a certain time point, and the time point at the moment is the inflection point.
8. The method for rapidly determining the stabilization time of the weathering steel rust layer by the electrical resistance method according to claim 7,
by gradual, it is meant that the rate of change of the corrosion rate is within 5% per hundred hours.
9. The method for rapidly determining the stabilization time of the weathering steel rust layer by the electrical resistance method according to claim 1,
the method for packaging the weathering steel sample to be tested comprises the steps of inlaying the weathering steel sample to be tested in non-conductive curable resin or adhesive, leaving only the surface to be corroded to be exposed in a corrosive environment for corrosion test, and taking the other surface vertical to the surface to be corroded as the section of the weathering steel sample to be tested.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111033096.8A CN113834768A (en) | 2021-09-03 | 2021-09-03 | Method for rapidly determining stabilization time of weather-resistant steel rust layer by using resistance method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111033096.8A CN113834768A (en) | 2021-09-03 | 2021-09-03 | Method for rapidly determining stabilization time of weather-resistant steel rust layer by using resistance method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113834768A true CN113834768A (en) | 2021-12-24 |
Family
ID=78962257
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111033096.8A Pending CN113834768A (en) | 2021-09-03 | 2021-09-03 | Method for rapidly determining stabilization time of weather-resistant steel rust layer by using resistance method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113834768A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102866104A (en) * | 2012-08-30 | 2013-01-09 | 北京科技大学 | Method for evaluating protective capability of weathering steel rust layers based on freezing-unfreezing treatment |
| CN112394024A (en) * | 2020-12-07 | 2021-02-23 | 国网福建省电力有限公司 | Rapid evaluation method for performance of weather-resistant steel rust layer for transmission tower in coastal atmospheric environment |
-
2021
- 2021-09-03 CN CN202111033096.8A patent/CN113834768A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102866104A (en) * | 2012-08-30 | 2013-01-09 | 北京科技大学 | Method for evaluating protective capability of weathering steel rust layers based on freezing-unfreezing treatment |
| CN112394024A (en) * | 2020-12-07 | 2021-02-23 | 国网福建省电力有限公司 | Rapid evaluation method for performance of weather-resistant steel rust layer for transmission tower in coastal atmospheric environment |
Non-Patent Citations (2)
| Title |
|---|
| 徐昌盛 等: "合金结构钢、不锈钢及其表面陶瓷涂层耐蚀性能研究", 《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》, 15 October 2012 (2012-10-15), pages 022 - 379 * |
| 郭宝兰 等: "LC4铝合金板材在EXCO溶液中的腐蚀行为", 《材料保护》, 30 June 1995 (1995-06-30), pages 5 - 7 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9354157B2 (en) | Apparatus and method for assessing subgrade corrosion | |
| US8926823B2 (en) | Sub-coating coated metal corrosion measurement | |
| JP6825846B2 (en) | Maintenance support equipment, maintenance support programs, and maintenance support methods | |
| JPH0464583B2 (en) | ||
| US7158071B2 (en) | Radar rainfall estimation technique when attenuation is negligible | |
| JP5314089B2 (en) | Corrosion rate estimation apparatus and method | |
| US7678260B1 (en) | Measurement of cumulative localized corrosion rate using coupled multielectrode array sensors | |
| CA2711951A1 (en) | Localized corrosion monitoring device for limited conductivity fluids | |
| Thevasiyani et al. | Statistical analysis of extreme ocean waves in Galle, Sri Lanka | |
| CN108663727B (en) | Method for estimating height of evaporation waveguide in world sea area by using evaporation rate | |
| JP6828750B2 (en) | Corrosion evaluation method | |
| JP2005337838A (en) | Corrosion deterioration evaluation device and method, computer program and recording medium | |
| CN113834768A (en) | Method for rapidly determining stabilization time of weather-resistant steel rust layer by using resistance method | |
| JP2003262580A (en) | Method for diagnosing corrosion of object embedded underground, corrosion diagnosing program, recording medium recording corrosion diagnosing program, and corrosion diagnosing apparatus | |
| Wardah et al. | Radar rainfall estimates comparison with kriging interpolation of gauged rain | |
| Li et al. | In‐situ characterization of the early stage of pipeline steel corrosion in bicarbonate solutions by electrochemical atomic force microscopy | |
| Rao et al. | Evaluation of DBS wind measurement technique in different beam configurations for a VHF wind profiler | |
| KR20230150386A (en) | Method for predicting the amount of corrosion of steel materials, corrosion amount prediction system for steel materials, corrosion amount prediction program for steel materials, and proposed method for steel materials | |
| JP2019158377A (en) | Measurement method of corrosion rate using acm sensor | |
| Zoglat et al. | Statistical methods to expect extreme values: Application of POT approach to CAC40 return index | |
| JP2000046778A (en) | Mimic electrode for monitoring local corrosion and method for monitoring local corrosion using the electrode | |
| JP5327178B2 (en) | Metal corrosion rate prediction method and metal corrosion life prediction system | |
| Noor et al. | Determination of linear Tafel region from piecewise linear regression analysis | |
| Nicard et al. | Monitoring of generalised corrosion: Ultrasonic coda wave interferometry technique applied to steel corrosion in aqueous NaCl solutions | |
| KR102530805B1 (en) | Pipe corrosion mointoring method and system thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |