Pitting Corrosion Resistance of Ta-Bearing Duplex Stainless Steel
نویسندگان
چکیده
The effect of Ta addition on the pitting corrosion resistance duplex stainless steels was investigated in both cases without and with deoxidization/desulfurization by Al Ca. improved two proposed mechanisms. For Ca, MnS inclusions which act as initiation sites are modified to electrochemically-stable (Ta,Mn) oxysulfides. (CaS (Al,Ca)oxides) coated stable Ta-containing nitrides resulting suppression propagation.
منابع مشابه
Microstructure, Pitting Corrosion Resistance and Impact Toughness of Duplex Stainless Steel Underwater Dry Hyperbaric Flux-Cored Arc Welds
Duplex stainless steel multi-pass welds were made at 0.15 MPa, 0.45 MPa, and 0.75 MPa pressure, simulating underwater dry hyperbaric welding by the flux-cored arc welding (FCAW) method, with welds of normal pressure as a benchmark. The purpose of this work was to estimate the effect of ambient pressure on the microstructure, pitting corrosion resistance and impact toughness of the weld metal. T...
متن کاملIMPROVING 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...
متن کاملCorrosion Resistance and Semiconducting Properties of the Passive Films on Duplex Stainless Steel 2205
In this study, the effect of molybdate on the electrochemical behavior and semi-conductive properties of duplex stainless steel 2205 passive film at NaCl solutions was investigated. Cyclic potentiodynamic polarization, impedance spectroscopy, mott-schottky plots and scanning electron microscopy (SEM) were used to study the passive behavior. Polarization curves showed that the corrosion current ...
متن کاملInfluence of multiple welding cycles on microstructure and corrosion resistance of a super duplex stainless steel
.......................................................................................... v Appended Publications .................................................................. vii Table of
متن کاملEffects of Solution-Annealing Temperature on the Precipitation of Secondary Phases and the Associated Pitting Corrosion Resistance in Hyper Duplex Stainless Steel
The effects of the solution-annealing temperature on the precipitation of secondary phases and the associated pitting corrosion resistance in hyper duplex stainless steel after aging at 1123K were investigated in a highly concentrated chloride solution. Increasing the solution annealing temperature from 1333 to 1413K retarded the formation of the secondary phases owing to a decrease in both the...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Materials transactions
سال: 2021
ISSN: ['1345-9678', '1347-5320']
DOI: https://doi.org/10.2320/matertrans.c-m2021835