...Abstract The present study evaluated nickel-based corrosion resistant alloys (CRAs), used as fasteners in simulating “splash zone” region under cathodic protection (CP). The CRA’s were submitted to crevice corrosion and the influence of CP was assessed electrochemically. The testing apparatus...

... aviation fuel (SAF), as well as reactor effluent air coolers (REAC’s) in hydrotreating plants. The alloys have been tested with regard to chloride induced stress corrosion cracking, (Cl-SCC), pitting, and crevice corrosion. The samples have been flat samples with ceramic crevice formers and C-rings...

...Abstract Recently, leakages were observed in 22Cr duplex steel ring type joint (RTJ) flange assemblies with SS316 gaskets, caused by crevice corrosion initiated externally from the marine environment. This was unexpected as such flange connections have been in operation for many decades without...

... environments. Unlike stainless steels where crevice corrosion grows with increasingly positive potentials relative to the repassivation potential, Grade 2 becomes more passive. This requires an alternative test method from the standard cyclic potentiodynamic polarization or potentiodynamic-galvanostatic...

...Duplex flange assemblies on an offshore platform started to experience crevice corrosion on the SS316 gaskets after the bolting material was changed from a hot-dip galvanized (HDG) steel to a corrosion resistant alloy (25Cr SDSS). This paper serves as Part 2 in an investigative study that aims...

... no applicable region even in 5 wt% NaCl solution due to its de-passivation. S39274 showed a narrow range of acceptable limits even in a 25 wt% NaCl solution in terms of crevice corrosion. For mixed gas conditions, S39274 showed good corrosion resistance in most of the conditions. These results be highly...

... were caused by crevice corrosion to the tubing threaded connections. UNS S82551 is expected to be corrosion resistant in WAG service utilizing treated seawater and dried gas. However, earlier extensive laboratory testing showed that this alloy can be sensitive to crevice corrosion under seawater...

... corrosion resistance. However, with 100 ppm NO₂, crevice corrosion was observed on the duplex stainless steel. When O₂ was introduced in addition to NO₂, super duplex stainless steel also showed signs of crevice corrosion. The localized attack further intensified with higher...

... the applicability of the material for CCS infrastructure and the development of corrosion control testing. CCS material selection super duplex crevice corrosion SCC O₂ H₂S INTRODUCTION CCS For achieving net-zero global CO₂ emissions, carbon capture and storage (CCS) has...

...In this paper, in order to investigate the effect of O₂ in detail, we did crevice corrosion test and electrochemical approach. EXPERIMENTAL PROCEDURE Materials UNS S42000 (Martensitic Stainless Steel: MSS), UNS S41426 (Super Martensitic Stainless Steel: SMSS), UNS S82551 (Duplex...

... these findings, new control limits were proposed that removed the minimum nitrite requirement within the chemistry envelope evaluated up to 50 °C. corrosion control pitting crevice corrosion high level waste tanks INTRODUCTION At Savannah River Site (SRS), high-level waste is stored in below-grade tanks...

... for the application. Material Selection Carbone storage Corrosion Resistance Alloys Crevice corrosion stress corrosion cracking sulfide stress corrosion cracking INTRODUCTION To qualify the material, a complete testing program was undertaken to assess the main corrosion risks associated to the application...

... corrosion resistance and serves a broader temperature range than duplex stainless steels and is a cost-efficient alternative to nickel-based such as UNS N06625 with similar mechanical strength and corrosion performance. The aim of this work is to compare the critical crevice corrosion temperature (CCT...

... the highest incidence of crevice corrosion regardless of the DOC. Produced water increased crevice corrosion susceptibility compared to seawater. Despite the reduction of DOC, the increase in chloride, H₂S and organic acid, and the pH reduction in the produced water intensified crevice corrosion...

.... corrosion control deposits crevice corrosion pitting INTRODUCTION In addition to the AZ-101 interstitial liquid simulant, underdeposit corrosion testing was performed using an AZ-101 sludge simulant. The high-level waste (HLW) precipitated hydroxide nominal simulant preparation was used to reproduce...

...Abstract An inexpensive holder for corrosion experiments was developed to avoid crevice corrosion during electrochemical tests for studying pitting corrosion of stainless steels and other corrosion-resistant alloys. The working principle follows Qvarfort’s electrochemical cell. Therefore...

...). The results showed that localized corrosion was higher in dynamic flow condition in comparison to stagnant flow condition. However, crevice corrosion seems to be more detrimental to the alloy (especially for welded joints), considering specific test scenarios. deaerated seawater stainless steel UNS S31600...

... have been discussed and remaining life assessment has been recommended to develop a plan for cleaning and repair of the tank bottom, if required. Water Tanks Coating Cathodic Protection Crevice Corrosion Pitting carbon steel INTRODUCTION Saline Water Conversion Corporation (SWCC) is the largest...

... compositions and the calculated PREN of the tested stainless-steel alloys are given in Table 2.1. All samples have been machined before testing to get an average surface roughness of 1.5 ±0.5 μm. For crevice corrosion testing, a 7 mm-diameter hole was drilled in the middle of the coupons to fix crevice...

... for such applications. The crevice corrosion susceptibility of S42000, S41500, S17400, S31603, S32101, S32202, S82551, S31803 and S39274 has been investigated in natural seawater continuously renewed at different dissolved oxygen levels that may be present in a seawater injection well. Results obtained have allowed...