6533b827fe1ef96bd1286600
RESEARCH PRODUCT
Effects of hydrogen-charging on the properties of S235JR steel
Izabela Pietkun-grebersubject
lcsh:GE1-350Materials scienceHydrogenScanning electron microscopeMetallurgychemistry.chemical_elementSulfuric acid02 engineering and technologyElectrochemistry020501 mining & metallurgyCorrosionchemistry.chemical_compound020303 mechanical engineering & transports0205 materials engineering0203 mechanical engineeringchemistryArsenic oxideComposite materialSaturation (chemistry)lcsh:Environmental sciencesTensile testingdescription
The paper presents the test results of the S235JR steel susceptibility to damage under the influence of hydrogen. The test of mechanical properties was performed on the basis of a static stretch test of non-hydrogenated samples and after cathodic polarization. Electrochemical measurements for the assessment of corrosion resistance of non-hydrogenated and hydrogenated steels were carried out using open circuit potential measurement and registering of potentiodynamic polarization curves in a three-electrode measuring system. Hydrogenation was carried out for between 3 and 24 hours in a solution of 0.1 N sulfuric acid (VI) with the addition of 2 mg/dm 3 of arsenic oxide (III) at an electric current density of 10 mA/cm 2 . The hydrogen content in the steel before and after saturation with hydrogen was determined using the analyzer. Fracture samples after tensile test were observed using scanning electron microscope. The results of the research showed that as the hydrogen concentration in the examined steel increased (the lengthening of the saturation time), the deterioration of its mechanical and electrochemical properties occurred.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2017-01-01 | E3S Web of Conferences |