...After machining, the gauge section of each specimen tested in corrosive environment was polished by SiC grit paper P1200, the ones tested as baseline in argon at room temperature and in glycerol at higher temperatures were prepared by grit paper P600 polishing. Several grit papers were used...

..., altogether six austenitic and duplex stainless steel grades with a varying Pitting Resistance Equivalent Number (PREN) were studied in test environments which varied with respect to their H₂SO₄ and chloride concentrations, while temperature ranged from room temperature up to 90 °C...

... of these factors include understanding all pipeline physical parameters, compliance with ILI vendor tool operational limits; such as magnetization capability, velocity, differential pressure and temperature requirements, and compliance with sound operational practices for launching and receiving of ILI tools...

...stainless steel chlorides stress corrosion cracking pH chloride content temperature oxygen stress relief INTRODUCTION Chloride promoted stress corrosion cracking (ClSCC) is a damage mechanism that can occur in a chloride containing aqueous environment. Damage can occur during in-service...

...EXPERIMENTAL RESULTS AND ANALYSIS Temperature effects Temperature has an important influence on corrosion of N80 steel. Temperature does not only affect the pH, but also affects the formation of corrosion products on material surface ¹⁰ . Erosion has little contribution on corrosion...

...Abstract Exposure temperature has a known effect on sulfide stress cracking (SSC) in low alloy steels where elevated temperatures permit the use of oil country tubular goods (OCTG) in sour conditions that would not be survivable at lower temperatures. In order to assess SSC susceptibility, NACE...

...However, a recent literature review ⁶ on the use of DSS in sour environment seems to contradict the unique temperature range between 50 and 100 °C as the most susceptible to provide SCC. If a minimum of SCC resistance for 22 %Cr DSS is observed around 80 °C in the solution at pH 2.8...

... procedure is advised for more concentrated chloride solutions. The optimized procedure allowed a low and relatively constant current density over time in step 4. Consequently, current density drop in step 5 is almost purely due to the effect of cooling and repassivation temperature may be determined...

...In regards to temperature exposure – GRE is traditionally not known as a “high temperature” material. The common temperature ratings for G10 and G11 products range from 266F/130C to 302F/150C for G10 and 356/180C to 392F/200C** for G11. Temperatures in the oil and gas industry have continued...

...Abstract In order to evaluate the applicability of the tubing steels, the corrosion behavior and stress corrosion cracking of tubing steels (P110S, P110-13Cr and duplex stainless steel 2205) were investigated under different H₂S partial pressures and temperature. The results showed...

... of localized corrosion, including alloy composition, heat treatment, and environmental effects such as temperature, and concentration of chloride, oxygen and other species. Regarding carbon and LAS, it is recognized that even small concentrations of hydrogen sulfide (H₂S) can have an important...

..., along with other parameters (i.e., temperature, presence of hydrocarbons, presence of various chemical treatments) were incorporated into the software tool for predicting NH₄HS corrosion rates. Cayard et al. confirmed the accuracy of the corrosion prediction model incorporated...

...Abstract This paper describes a novel methodology to measure the Critical Pitting Temperature (CPT) of a Duplex Stainless Steels (DSS) in artificial seawater based on the Electrochemical Noise (ECN) technique. The work presented here shows, for the first time, simultaneous in-situ micro...

... and austenitic stainless steels in deaerated 10,000 ppm Cl^- solution at ambient temperature. Results show that in general the resistance to localized corrosion correlates well with the value of the pitting resistance equivalent number (PRE), regardless of their crystalline microstructure (i.e...

... significantly by process parameters and materials of construction. The amine itself is not corrosive, but corrosion is promoted by the following: Dissolved acid gases Higher concentration of corrosive species i.e. HSAS (Heat Stable Amine Salt). High temperatures After more than seven years using...

... the Critical Pitting Temperature (CPT). The work presented here shows, for the first time, simultaneous in-situ micro-visualization and anodic polarizations of two microelectrodes made of UNS S32550 Duplex Stainless Steel (DSS) while immersed in artificial seawater. A real time video of the surface...

.... Firstly, the effects of temperature and metal cations on the pitting corrosion of Ti are summarized based on previous research. The pitting corrosion of Ti in chloride solutions is strongly temperature-dependent; the breakdown potential E_b decreases as the operating temperature...

... different concentration of H₂S at different temperatures was studied. Potendiodynamic polarization, electrochemical impedance spectroscopy (EIS) and scanning electron microscopy (SEM) were employed to characterize the corroded API X-80 steel surface. The result showed that the corrosion rate...

...RESULTS PD-GS-PD crevice corrosion tests Abstract The crevice corrosion repassivation potential of austenitic S30400 and S31600 stainless steels (SSs) was determined in 0.1 and 1 mol/L NaCl solutions and in 5 mol/L CaCl₂ solution at temperatures between 0 and 90°C. The repassivation...

...Abstract Ni-Fe-Cr alloys, such as alloys N06600, N06690 and N08800, are used in steam generator tubing of nuclear power reactors due to their high mechanical strength and corrosion resistance at high temperature. Failure of those alloys is associated with crevices formed between tubing and tube...