Pitting corrosion analysis of stainless steel by boundary element method with strain-dependent polarization curve

IMPROVING PITTING CORROSION OF 304 STAINLESS STEEL BY ELECTROPOLISHING TECHNIQUE

Several surface modification techniques such as ion implantation, surface laser melting, have been employed to improve pitting corrosion resistance of stainless steel. Electropolishing is a technique in which the surface roughness is eliminated through a selective electrochemical dissolution. The effect of electropolishing on pitting corrosion of 304 stainless steel (SS) was investigated employ...

DETERIORATION OF PITTING CORROSION OF 316 STAINLESS STEEL BY SENSITIZATION HEAT TREATMENT

In this research pitting Corrosion of a sensitized 316 stainless steel was investigated employing potentiodynamic, potentiostatic techniques. Sensitization process was carried out on as-received alloy by submitting the specimen in electric furnace set at 650°Cfor five hours and then the specimen was quenched 25°C water. Potentiodynamic polarization of as received and sensitized specimens in 1M ...

Stable Pitting Corrosion of Stainless Steel as Diffusion-controlled Dissolution Process with a Sharp Moving Electrode Boundary

This contribution is devoted to explanation and prediction of corrosion pit propagation or stable pit growth, governed by ion transport properties in electrolytic solutions by deriving the (3D) mass balance for a body hosting a sharp dissolution front which separates the solid electrode from liquid electrolyte. The model is completed by Fick’s law of diffusion, governing the behavior of the dis...

In situ observation of pitting of stainless steel by XAFS.

An in situ observation technique by XAFS (X-ray Absorption Fine Structures) has been developed for observation of metal corrosion. XAFS spectra were obtained with a special electrochemical cell to elucidate pitting: change of concentrations and structures of ions near the interface of solution and metal. It has been successfully shown that the concentrations of Cr and Br are linearly dependent ...

Stainless steel pitting and early-stage stress corrosion cracking under ultra-low elastic load