CN107796752A - A kind of method for measuring steel hydrogen induced cracking (HIC) performance in hydrogen sulfide corrosion environment - Google Patents
A kind of method for measuring steel hydrogen induced cracking (HIC) performance in hydrogen sulfide corrosion environment Download PDFInfo
- Publication number
- CN107796752A CN107796752A CN201610802992.9A CN201610802992A CN107796752A CN 107796752 A CN107796752 A CN 107796752A CN 201610802992 A CN201610802992 A CN 201610802992A CN 107796752 A CN107796752 A CN 107796752A
- Authority
- CN
- China
- Prior art keywords
- hydrogen
- steel sample
- steel
- hic
- electrode
- 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
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
- G01N17/02—Electrochemical measuring systems for weathering, corrosion or corrosion-protection measurement
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Ecology (AREA)
- Environmental & Geological Engineering (AREA)
- Environmental Sciences (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The present invention provides a kind of method for measuring steel hydrogen induced cracking (HIC) performance in hydrogen sulfide corrosion environment, the nickel plating of steel sample is installed in double-electrolyzer facing to anode electrolysis pond side, the working electrode end of potentiostat and steel sample, the saturated calomel electrode of reference electrode end and anode electrolysis pond side, auxiliary electrode are connected with the platinum electrode of anode electrolysis pond side, constant current supply negative pole connects steel sample, positive pole connection catholyte pond side platinum electrode.NaOH solution is added in anode electrolysis pond at room temperature, applies constant potential polarization current potential, is less than 1 μ A/cm in polarization current2When, by added with NaCl H2SO4In solution injection catholyte pond, with 0.2~20mA/cm2Current density open constant current supply, and record the time now；Repeat the above steps, the hydrogen storage capacity of irreversible trap in steel sample is obtained the area between second of Hydrogen permeation curve for the first time by measuring, so as to simple and quick, hydrogen induced cracking (HIC) performance of the accurate safe measurement tapping in hydrogen sulfide corrosion environment.
Description
Technical field
The invention belongs to field of electrochemical detection, and in particular to a kind of quick measurement steel hydrogen in hydrogen sulfide corrosion environment causes
The electrochemical method of cracking performance.
Background technology
Permeability behavior of the hydrogen-induced fracture performance of steel with hydrogen in steel is relevant.Hydrogen atom spreads in metal material, aggregation
In hydrogen trap.The crystal defects such as image position mistake, crystal boundary, field trash interface, carbide interface in common metal and alloy all be present,
They can capture hydrogen, commonly referred to as hydrogen trap.Hydrogen trap includes reversible trap (such as crystal boundary and dislocation) and irreversible trap is (such as
Second Phase Particle surface etc.), but the hydrogen in only irreversible trap is very big with Mean bindind energy, and the hydrogen at this is not easy to run out of.This
Sample, the hydrogen in irreversible hydrogen trap are easily largely assembled, and will produce hydrogen blister or even micro-crack.It is micro- under outer stress
Crackle can cause stress concentration, and the hydrogen pressure and can in crackle assists the effect of external carbuncle, when hydrogen pressure reaches a certain critical value,
Material is brittle cracking.Therefore, measure irreversible trap hydrogen storage capacity to have great importance, the hydrogen that it can evaluate steel causes to open
Fragility energy.
Hydrogen-sulfide environmental hydrogen induced cracking (HIC) corrosion failure is led in the hydrogen atom intrusion steel separated out by negative electrode in corrosion reaction
Cause, its essence is the hydrogen-induced fracture under a kind of specific hydrogen environment.Chu Wuyang etc. thinks, can be filled in the dynamic under specific currents
Hydrogen simulates this specific hydrogen environment of wet hydrogen sulfide environment.Therefore, can be very good to simulate Wet H2S environment with electrochemical method
Corrosive environment.
Hydrogen diffusion coefficient, the diffusible hydrogen of Tang Yong sails et al. research application electrochemical hydrogen permeation method measure near room temperature are dense
The parameters such as degree, and then study the Hydrogen Brittleness Phenomena of metal material.Hydrogen diffusion coefficient represents the thing of hydrogen diffusion in metal material
Reason amount.Diffusible hydrogen concentration be in the lattice of the per effective area of metal can free diffusing that a part of hydrogen amount.This two
Individual parameter all can not effectively characterize ability of aggregation of the hydrogen in metal material, it is impossible to directly and accurately characterize the hydrogen induced cracking (HIC) of steel
Performance.In addition, generally use national standard GB/T8650-2006 or NACE standard TM0284-2003 hydrogen induced cracking (HIC) marks at present
Quasi- test method evaluates the hydrogen induced cracking (HIC) performance of steel.But time-consuming, result of the test human factor influences greatly for this method.And
Hydrogen sulfide gas is a kind of toxic gas, and the operation of safeguard and personnel to experiment requires very high.
In summary, irreversible trap hydrogen storage capacity is measured with electrochemical hydrogen permeation method to evaluate steel in hydrogen sulfide ring
Hydrogen induced cracking (HIC) performance in border, wherein irreversible trap hydrogen storage capacity is flushed with hydrogen penetration curve difference in areas to characterize using transient state twice,
It is a kind of simple, quick, accurate and safe measuring method.
The content of the invention
Penetration curve difference in areas is flushed with hydrogen to characterize irreversible fall into using transient state twice it is an object of the invention to provide one kind
Trap hydrogen storage capacity, so as to simple, quick, accurate, safe measurement tapping hydrogen induced cracking (HIC) performance in hydrogen sulfide corrosion environment
Method.
Therefore, the technical solution that the present invention is taken is：
A kind of method for measuring steel hydrogen induced cracking (HIC) performance in hydrogen sulfide corrosion environment, utilizes electrochemical hydrogen permeation method pair
Hydrogen diffusion behaviour is tested in steel, and its specific method and step are：
(1) steel sample thickness L is measured, after steel sample is polishing into light with sand paper, respectively with distilled water, absolute ethyl alcohol and acetone
Cleaning.
(2) using nickel-plating liquid to steel sample anode sides nickel plating, 5~10mA/cm of nickel plating electric current2, the time is 14~17min,
Cathode side not nickel plating.
(3) after the completion of nickel plating, with distilled water flushing steel sample, steel sample is put into drier after drying, it is standby.
(4) steel sample is installed in double-electrolyzer, the nickel plating of steel sample is facing to anode electrolysis pond side.
(5) the working electrode end of potentiostat is connected with steel sample, the saturation at reference electrode end and anode electrolysis pond side
Calomel electrode is connected, and auxiliary electrode is connected with the platinum electrode of anode electrolysis pond side, wherein, working electrode and anode electrolysis pond
Operating distance with platinum electrode in catholyte pond is 140mm.
(6) negative pole of constant current supply is connected to steel sample, positive pole is connected to the platinum electrode of catholyte pond side.
(7) at room temperature, the NaOH solution that concentration is 0.2mol/L is added in anode electrolysis pond, after-applied 0.15V it is permanent
Potential polarization current potential (vs.SCE), following reaction now occurs on steel sample surface：
OH-+[H]-e→H2O
As [H] in steel sample is gradually diffused into surface and is oxidized, anodic oxidation aftercurrent gradually tends towards stability；
(8) it is less than 1 μ A/cm in polarization current2When, by added with the H for being flushed with hydrogen additive2SO4Solution and various concentrations NaCl are molten
In the mixed solution injection catholyte pond of liquid, wherein NaCl concentration is 0.06~5.00mol/L, H2SO4Solution concentration is
0.5mol/L, then with 0.2~20mA/cm2Current density open constant current supply, and the time recorded now is t0；Now fill
Following reaction occurs for the steel sample surface in hydrogen electrolytic cell：
H++e→[H]
[H]+[H]→H2↑
[H]+M→M-H
After being flushed with hydrogen additive and being adsorbed in electrode surface, make overpotential rise of the hydrogen on steel sample, serve cathodic polarization
Effect, hinders [H] and is combined into H2Go adsorption process, so as to promote hydrogen atom to steel sample diffusion inside；Because hydrogen is in steel sample
It is middle constantly to be migrated in the presence of certain concentration difference, hydrogen atom to anode electrolytic cell side, when hydrogen atom arrival anode-side surface, in nickel
Under catalysis and potentiostat anode polarization effect, hydrogen atom is oxidized, and forms electric current in the loop, and with the extension of time,
Oxidation current gradually increases, and finally reaches the poised state of high point.Now, the first time Hydrogen permeation curve of steel plate is obtained.
(9) repeat step (7) and step (8).Now, second of Hydrogen permeation curve of steel plate is obtained.
(10) hydrogen storage capacity of irreversible trap passes through between measurement first time and second of Hydrogen permeation curve in steel sample
Area obtains, and wherein ordinate is normalization flux J/J∞, abscissa is parameter τ=DLt/L2, t and L are respectively lag time
And sample thickness, DLThe diffusion coefficient for being hydrogen in the pure iron without trap, in 298K, DL=7.2 × 10-5cm2/s。
The nickel-plating liquid forms：150~200g/L of nickel sulfate, 8~10g/L of sodium chloride, boric acid 30~35g/L are anhydrous
40~80g/L of sodium sulphate, 0.05~0.1g/L of lauryl sodium sulfate.
The additive that is flushed with hydrogen used in test process is flushed with hydrogen electrolyte for 0.22g/L vulcanized sodium acidity.
Beneficial effects of the present invention are：
1. hydrogen induced cracking (HIC) performance of the inventive method with irreversible trap hydrogen storage capacity evaluation steel in hydrogen-sulfide environmental, inspection
It is accurate to survey analysis result.
2. needed 96 hours with national standard GB/T8650-2006 or NACE the standard TM0284-2003 method test times
Compare, the inventive method test period about 3 hours, greatly shorten test period, improve operating efficiency.
3. the inventive method is simple to operate, high safety.
Brief description of the drawings
Fig. 1 is hydrogen induced cracking (HIC) device for measuring properties schematic diagram in steel；
Fig. 2 is Q345R (R-HIC) steel Hydrogen permeation curve figure twice.
In Fig. 1,1 is steel sample, and 2 be catholyte pond, and 3 be anode electrolysis pond, and 4 be constant current supply, and 5 be potentiostat, and 6 are
Control and record computer, 7 be working electrode end, and 8 be reference electrode end, and 9 be saturated calomel electrode (SCE), and 10 be auxiliary electrode
End, 11 be platinum electrode, and 12 be constant current supply negative pole, and 13 be constant current supply positive pole, and 14 be catholyte pond side platinum electrode.
In Fig. 2, ordinate is normalization flux J/J∞, abscissa is parameter τ.
Embodiment
As seen from Figure 1, hydrogen induced cracking (HIC) device for measuring properties in steel of the present invention, mainly by catholyte pond 2, anode electrolysis
Platinum electrode in pond 3, constant current supply 4, potentiostat 5, control and record computer 6, saturated calomel electrode (SCE) 9, anode electrolysis pond
11 and catholyte pond side platinum electrode 14 formed.The working electrode end 7 of potentiostat 4 and constant current supply negative pole 12 respectively with steel
Sample 1 connects, and the reference electrode end 8 of potentiostat 5 connects saturated calomel electrode (SCE) 9, the auxiliary electrode end 10 of potentiostat 5
It is connected with the platinum electrode 11 in anode electrolysis pond 3, constant current supply positive pole 13 connects the platinum electrode 14 of catholyte pond side, constant potential
Instrument 5 is connected with controlling and recording computer 6.
Q345R (R-HIC) steel sample 1 is taken, its chemical composition (mass%) is：C 0.17, Si 0.33, Mn 1.25, P
0.006, S 0.0006, (Cu+Ni) is 0.38, Nb 0.015, Ca 0.001, Fe surpluses；The size of steel sample 1 be 400 × 100 ×
1.5mm.The sample state normalizing of steel sample 1,880 DEG C of normalizing temperature.
Nickel-plating liquid used forms：150~200g/L of nickel sulfate, 8~10g/L of sodium chloride, boric acid 30~35g/L are anhydrous
40~80g/L of sodium sulphate, 0.05~0.1g/L of lauryl sodium sulfate.
Single-side nickel-plating will be carried out after the degreasing of steel sample 1, activation, afterwards by the nickel plating of steel sample 1 facing to the side of anode electrolysis pond 3,
It is installed in the double-electrolyzer that catholyte pond 2 is formed with anode electrolysis pond 3.After the single-side nickel-plating of steel sample 1, the nickel plating face table of steel sample 1
Surface roughness is 0.8447 μm.The working electrode end 7 of potentiostat 5 is connected with steel sample 1, reference electrode end 8 and anode electrolysis
The saturated calomel electrode 9 of the side of pond 3 is connected, and auxiliary electrode end 10 is connected with the platinum electrode 11 of the side of anode electrolysis pond 3；By permanent electricity
The negative pole 12 in stream source 13 is connected to steel sample 1, and constant current supply positive pole 13 is connected to the platinum electrode 14 of catholyte pond side.
Under the conditions of room temperature (25 ± 0.5 DEG C), in anode electrolysis pond 3 add 0.2mol/L NaOH solutions, it is after-applied
0.15V constant potential polarizations current potential (vs.SCE).When anodic oxidation aftercurrent tends towards stability less than 1 μ A/cm2When, will be added with filling
Hydrogen additive 0.22g/L Na2S 0.5mol/L H2SO4With various concentrations NaCl solution (see Tables 1 and 2) injection negative electrode electricity
Solve in pond 2, with 2.4mA/cm2Current density open constant current supply 4, when the poised state to peak, stop
It is flushed with hydrogen.Under similarity condition, it is flushed with hydrogen again to Q345R (R-HIC) steel sample 1, is flushed with hydrogen result curve twice and sees Fig. 2.
Hydrogen in irreversible trap is very big with Mean bindind energy, and the hydrogen at this is not easy to run out of.Therefore irreversible trap storage hydrogen
To Q345R (R-HIC) steel sample 1, the evaluation of hydrogen induced cracking (HIC) performance in hydrogen sulfide corrosion environment plays an important roll capacity.
Table 1Q345R (R-HIC) steel difference Cl-Irreversible trap hydrogen storage capacity result under concentration conditions
| Embodiment | Cl-Concentration mol/L | Irreversible trap hydrogen storage capacity |
| 1 | 0.06 | 0.72 |
| 2 | 0.60 | 2.53 |
| 3 | 1.00 | 3.52 |
| 4 | 2.00 | 2.79 |
Table 2Q345R (R-HIC) steel is in different Cl-Resistance against hydrogen cracking result of the test under wet hydrogen sulfide environment under concentration conditions
Table 1 is to characterize the hydrogen in hydrogen sulfide corrosion environment of Q345R (R-HIC) steel sample 1 with irreversible trap hydrogen storage capacity to cause
Cracking performance.Table 2 is establishing criteria GB/T 8650-2006《Pipe line steel and pressure vessel steel resistance against hydrogen cracking assessment method》It is molten
The result of the test that liquid A experimental conditions are carried out.Two methods of Tables 1 and 2 are measured and can be found that after result is contrasted：Measure irreversible
Under the result and wet hydrogen sulfide environment of hydrogen storage capacity there is good uniformity in resistance against hydrogen cracking result of the test.The steel sample 1 of measurement
Irreversible trap hydrogen storage capacity is bigger, and crack-sensitivity rate is bigger under this condition for steel sample 1, so as to which Wet H2S environment hydrogen sensitization perception is got over
Greatly.
Claims (3)
- A kind of 1. method for measuring steel hydrogen induced cracking (HIC) performance in hydrogen sulfide corrosion environment, using electrochemical hydrogen permeation method to steel Middle hydrogen diffusion behaviour is tested, it is characterised in that specific method and step are：(1) measurement steel sample thickness L is clear with distilled water, absolute ethyl alcohol and acetone respectively after steel sample is polishing into light with sand paper Wash；(2) using nickel-plating liquid to steel sample anode sides nickel plating, 5~10mA/cm of nickel plating electric current2, the time is 14~17min, cathode side Face not nickel plating；(3) after the completion of nickel plating, with distilled water flushing steel sample, steel sample is put into drier after drying, it is standby；(4) steel sample is installed in double-electrolyzer, the nickel plating of steel sample is facing to anode electrolysis pond side；(5) the working electrode end of potentiostat is connected with steel sample, the saturation calomel at reference electrode end and anode electrolysis pond side Electrode is connected, and auxiliary electrode is connected with the platinum electrode of anode electrolysis pond side, wherein, working electrode and anode electrolysis pond and the moon The operating distance of platinum electrode is 140mm in the electrolytic cell of pole；(6) negative pole of constant current supply is connected to steel sample, positive pole is connected to the platinum electrode of catholyte pond side；(7) at room temperature, in anode electrolysis pond add concentration be 0.2mol/L NaOH solution, after-applied 0.15V constant potentials Polarization potential (vs.SCE), following reaction now occurs on steel sample surface：OH-+[H]-e→H2OAs [H] in steel sample is gradually diffused into surface and is oxidized, anodic oxidation aftercurrent gradually tends towards stability；(8) it is less than 1 μ A/cm in polarization current2When, by added with the H for being flushed with hydrogen additive2SO4Solution and various concentrations NaCl solution In mixed solution injection catholyte pond, wherein NaCl concentration is 0.06~5.00mol/L, H2SO4Solution concentration is 0.5mol/ L, then with 0.2~20mA/cm2Current density open constant current supply, and the time recorded now is t0；Now it is flushed with hydrogen electrolysis Following reaction occurs for the steel sample surface in pond：H++e→[H][H]+[H]→H2↑[H]+M→M-HAfter being flushed with hydrogen additive and being adsorbed in electrode surface, make overpotential rise of the hydrogen on steel sample, serve cathodic polarization effect, Hinder [H] and be combined into H2Go adsorption process, so as to promote hydrogen atom to steel sample diffusion inside；Because hydrogen exists in steel sample Certain concentration difference, hydrogen atom constantly to anode electrolytic cell side migrate, when hydrogen atom reach anode-side surface, nickel catalysis and Under potentiostat anode polarization effect, hydrogen atom is oxidized, and forms electric current, and with the extension of time, oxidation electricity in the loop Stream gradually increases, and finally reaches the poised state of high point；Now, the first time Hydrogen permeation curve of steel plate is obtained；(9) repeat step (7) and step (8)；Now, second of Hydrogen permeation curve of steel plate is obtained；(10) hydrogen storage capacity of irreversible trap passes through the area between measurement first time and second of Hydrogen permeation curve in steel sample To obtain, wherein B ordinates are normalization flux J/J∞, abscissa is parameter τ=DLt/L2, t and L be respectively lag time and Sample thickness, DLThe diffusion coefficient for being hydrogen in the pure iron without trap, in 298K, DL=7.2 × 10-5cm2/s。
- 2. the method for measurement steel hydrogen induced cracking (HIC) performance in hydrogen sulfide corrosion environment according to claim 1, its feature exist In the nickel-plating liquid composition is：150~200g/L of nickel sulfate, 8~10g/L of sodium chloride, 30~35g/L of boric acid, anhydrous sodium sulfate 40~80g/L, 0.05~0.1g/L of lauryl sodium sulfate.
- 3. the method for measurement steel hydrogen induced cracking (HIC) performance in hydrogen sulfide corrosion environment according to claim 1, its feature exist In the additive that is flushed with hydrogen used in test process is flushed with hydrogen electrolyte for 0.22g/L vulcanized sodium acidity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610802992.9A CN107796752A (en) | 2016-09-06 | 2016-09-06 | A kind of method for measuring steel hydrogen induced cracking (HIC) performance in hydrogen sulfide corrosion environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610802992.9A CN107796752A (en) | 2016-09-06 | 2016-09-06 | A kind of method for measuring steel hydrogen induced cracking (HIC) performance in hydrogen sulfide corrosion environment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107796752A true CN107796752A (en) | 2018-03-13 |
Family
ID=61530061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610802992.9A Pending CN107796752A (en) | 2016-09-06 | 2016-09-06 | A kind of method for measuring steel hydrogen induced cracking (HIC) performance in hydrogen sulfide corrosion environment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107796752A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109540619A (en) * | 2018-11-23 | 2019-03-29 | 东方电气集团东方汽轮机有限公司 | A kind of electrochemistry is flushed with hydrogen electrolyte |
| CN112179838A (en) * | 2020-09-29 | 2021-01-05 | 复旦大学 | Method for inspecting crevice corrosion resistance of duplex stainless steel |
| CN112735538A (en) * | 2020-12-09 | 2021-04-30 | 中国电器科学研究院股份有限公司 | Metal atmospheric corrosion rate prediction algorithm based on substance transfer dynamics model |
| CN113049484A (en) * | 2019-12-27 | 2021-06-29 | 中国科学院海洋研究所 | Device and method for measuring hydrogen permeability of metal material |
| WO2022026711A3 (en) * | 2020-07-29 | 2022-03-17 | Massachusetts Institute Of Technology | Systems and methods for regulating hydrogen transport out of structural materials |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102121124A (en) * | 2010-10-13 | 2011-07-13 | 成都亨通光通信有限公司 | Method for electroplating on surface of silica optical fiber |
| CN104568726A (en) * | 2014-12-02 | 2015-04-29 | 浙江工业大学 | High temperature and high pressure corrosion hydrogen permeation kinetic test device and test method thereof |
| CN104977333A (en) * | 2014-04-10 | 2015-10-14 | 鞍钢股份有限公司 | Hydrogen-filling additive for measuring hydrogen diffusion coefficient in steel and measuring method |
-
2016
- 2016-09-06 CN CN201610802992.9A patent/CN107796752A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102121124A (en) * | 2010-10-13 | 2011-07-13 | 成都亨通光通信有限公司 | Method for electroplating on surface of silica optical fiber |
| CN104977333A (en) * | 2014-04-10 | 2015-10-14 | 鞍钢股份有限公司 | Hydrogen-filling additive for measuring hydrogen diffusion coefficient in steel and measuring method |
| CN104568726A (en) * | 2014-12-02 | 2015-04-29 | 浙江工业大学 | High temperature and high pressure corrosion hydrogen permeation kinetic test device and test method thereof |
Non-Patent Citations (3)
| Title |
|---|
| 付雷: "塑性变形对高强钢氢损伤行为影响研究", 《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》 * |
| 吴红梅: "油管钢氢渗透特性及其对应力腐蚀开裂的影响", 《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》 * |
| 田青超: "《抗挤毁套管产品开发理论和实践》", 30 June 2013, 冶金工业出版社 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109540619A (en) * | 2018-11-23 | 2019-03-29 | 东方电气集团东方汽轮机有限公司 | A kind of electrochemistry is flushed with hydrogen electrolyte |
| CN113049484A (en) * | 2019-12-27 | 2021-06-29 | 中国科学院海洋研究所 | Device and method for measuring hydrogen permeability of metal material |
| WO2022026711A3 (en) * | 2020-07-29 | 2022-03-17 | Massachusetts Institute Of Technology | Systems and methods for regulating hydrogen transport out of structural materials |
| CN112179838A (en) * | 2020-09-29 | 2021-01-05 | 复旦大学 | Method for inspecting crevice corrosion resistance of duplex stainless steel |
| CN112735538A (en) * | 2020-12-09 | 2021-04-30 | 中国电器科学研究院股份有限公司 | Metal atmospheric corrosion rate prediction algorithm based on substance transfer dynamics model |
| CN112735538B (en) * | 2020-12-09 | 2022-01-21 | 中国电器科学研究院股份有限公司 | Metal atmospheric corrosion rate prediction algorithm based on substance transfer dynamics model |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107796752A (en) | A kind of method for measuring steel hydrogen induced cracking (HIC) performance in hydrogen sulfide corrosion environment | |
| CN103528944B (en) | A kind of crevice corrosion chemical property test unit | |
| CN104897744B (en) | A kind of device and method for studying metal hydrogen permeation behavior | |
| CN104515732B (en) | A kind of test metal material device of hydrogen penetrating quality under liquid high pressure | |
| CN104568727B (en) | High temperature and high pressure corrosion hydrogen permeation testing device and method | |
| CN103398942B (en) | Metal regional area hydrogen permeation behavior experimental provision | |
| Tan et al. | Heterogeneous electrode processes and localized corrosion | |
| CN107228823B (en) | Aluminum alloy local corrosion evaluation device | |
| CN205826490U (en) | A kind of electrochemical experimental device measuring band rusty scale material corrosion resistance | |
| CN109856037B (en) | Method for measuring long-term stability of metal bipolar plate | |
| CN203519471U (en) | Electrochemical performance testing apparatus for crevice corrosion | |
| CN108256139A (en) | A kind of different metal materials composite structure accelerated environment spectrum preparation method | |
| CN102175596A (en) | Three-electrode electrolytic cell experimental device for electrochemical behavior of metal under thin-layer liquid membrane | |
| CN105547988A (en) | Reinforced concrete corrosion test device and test method | |
| CN105938085A (en) | Electrochemical experiment method and device for measuring corrosion resistance of rust-layer material | |
| Zhou et al. | Passivation process of X80 pipeline steel in bicarbonate solutions | |
| CN205384211U (en) | Realize fast that stainless steel spot corrosion takes place and corrosion test device of development | |
| CN104374813A (en) | Method for determining concentration of critical chloride ion in concrete reinforcing bars | |
| CN108680469A (en) | A kind of ion penetration resistance of concrete measurement method | |
| CN104849326B (en) | A kind of concrete reinforcement erosion condition judgement method | |
| CN204128939U (en) | Drying and watering cycle alternately simulation accelerated coating corrosion experimental provision in a kind of briny environment | |
| CN115931538B (en) | Method for measuring influence degree of hydrogen in acidic environment on metal stress corrosion cracking | |
| POURBAIX | Characteristics of localized corrosion of steel in chloride solutions | |
| TWI621842B (en) | Coating accelerated corrosion test method | |
| CN104297317B (en) | A kind of on-the-spot device surveying hydrogen in situ and measuring method 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 | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180313 |
|
| WD01 | Invention patent application deemed withdrawn after publication |