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Performing Experiments

Elctrochemical experimental setup.jpg
Weightloss EXP setup.jpg

Anodic Dissolution of Tantalum (Ta) in Acidic fluoride media

Corrosion of Ta in acidic fluoride media

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  • For studying the anodic dissolution mechanism of valve metals in acidic fluoride media, Eletrochemical Impedance Spectroscopy (EIS) and Anodic Polarization experiments are employed.

  • Chronoamperometry is also performed at active-passive regions for XPS analysis.

Corrosion of Tantalum in acidic fluoride media is studied by

  • Conventional weight loss method (Immersion tests)

  • The corrosion current is measured from The afel analysis of polarisation data 

  • The polarisation resistance is measured from  EIS, Linear Polarisation (LP) and Tafel analysis

Hydrogen Evolution Reaction (HER) on Platinum

  • Studies on the HER reactions are limited to low current density in normal RDE due to the formation of gas bubbles on the electrode surface

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  • Inverted Rotating Disc Electrodes (IRDE) are used to study the reaction mechanism of HER, and the bubbles release fast from the surface of electrode.

Continuous Weight Loss Measurement

  • An analytical weighing balance (0.1 mg accuracy)  with a bottom hook is used to measure the continuous weight change (corrosion rate) of metal in acid.

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  • The experimental setup is kept inside to eliminate the external noises, and the weight changes in the balance are recorded in an external PC by using WinCT data communication software.

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