On the mechanism of intergranular stress corrosion cracking of sensitized stainless steel in tetrathionate solution

Yonezu, Akio; Kusano, Ryota; Chen, Xi

doi:10.1007/s10853-012-7032-8

Cited by 17 publications

(10 citation statements)

References 9 publications

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“…Tetrathionate is a stable sulfur-containing compound that plays a significant role in stainless steel corrosion, in gold leaching in solutions of thiosulfate, in pattern formation, and in life science . It has been clearly shown that tetrathionate can persist as a long-lived intermediate in the oxidation reactions of thiosulfate for a long period of time in slightly acidic media.…”

Section: Introductionmentioning

confidence: 99%

Comprehensive Simultaneous Kinetic Study of Sulfitolysis and Thiosulfatolysis of Tetrathionate Ion: Unravelling the Unique pH Dependence of Thiosulfatolysis

et al. 2015

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The kinetics of the reactions of tetrathionate with S(IV) species and with thiosulfate in slightly acidic and neutral media were studied concurrently at 25.0 ± 0.1 °C by simultaneous high-performance liquid chromatography monitoring of the concentrations of polythionates (including trithionate, tetrathionate, and pentathionate), thiosulfate, and sulfite. The tetrathionate-sulfite and tetrathionate-thiosulfate reactions were found to be first-order with respect to both reactants. The tetrathionate-sulfite reaction was found to be pH-dependent under the conditions studied. In contrast, the tetrathionate-thiosulfate reaction was experimentally demonstrated to be pH-independent at neutral medium, where the pKa2 value of sulfurous acid plays a key role, whereas under slightly acidic conditions, between pH 4 and 5 the consumption of tetrathionate during the course of reaction was found to become pH-dependent. We show that the pH dependencies in both systems can be readily explained by the reactivity difference between sulfite and bisulfite toward the β-sulfur of the tetrathionate. A simple two-step kinetic model incorporating the protonation equilibrium of sulfite is proposed on the basis of the simultaneous evaluation of the kinetic curves of the two systems, which allowed us to determine reliable rate coefficients for both the forward and backward reactions. Furthermore, the powerful ability of simultaneously evaluating the two chemical systems to yield reliable rate coefficients of the kinetic model is demonstrated.

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Section: Introductionmentioning

confidence: 99%

Comprehensive Simultaneous Kinetic Study of Sulfitolysis and Thiosulfatolysis of Tetrathionate Ion: Unravelling the Unique pH Dependence of Thiosulfatolysis

et al. 2015

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“…Once the transition from pit to crack is completed, the transients are mainly characterised with longer duration and higher electrical quantity (Figure 6(d)), which could be attributed to the propagating cracks due to the increasing CO 2 concentration. In fact, the integration of every current transient q is proportional to the amount of dissolved metal [39] according to Equation (4). A single crack advance can be estimated from the q .…”

Section: Discussionmentioning

confidence: 99%

“…SCC mechanisms have been studied by many researchers for decades, and several representative mechanisms of SCC have been proposed. First, the crack tip is anodic to the surrounding area and the rapid dissolution of the anode is thus dominant, which is the so-called anodic dissolution theory [3,4]. Second, the crack tip is cathodic to the peripheral region.…”

Section: Introductionmentioning

confidence: 99%

Early identification of stress corrosion cracking of P110 low alloy steel in downhole fluid by electrochemical noise measurement

Jiao

Zhang

et al. 2020

Corrosion Engineering, Science and Technology

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Electrochemical noise (EN) measurements were applied to detect the stress corrosion cracking (SCC) of API P110 low alloy steel in simulating CO 2 -containing downhole fluid during the slow strain rate test (SSRT). Several statistical parameters of potential and current transients were defined, and they were proven to be indicative of the metastable and stable pitting, as well as the initiation and propagation processes of microcracks. The EN results showed that the amplitude and lifespan of current transients increase with the CO 2 concentration. The increasing SCC susceptibility of P110 steel is mainly attributed to the decreasing pH at the crack tip, which not only accelerated the rupture of passive film on crack walls but also prolonged the lifespan of cracks advance. EN measurement may be a promising technique for the early diagnosis of SCC.

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“…On this concern the assessment of cumulative value for specific AE parameters, such as hits, counts and energy was identified as a suitable approach in order to evaluate the damage evolution induced by SCC. The use of the cumulative parameters related to the AE waveform shape may be more effective for discriminating energetically significant events during the SCC test [62,[80][81][82].…”

Section: Ae Source Identification By Cumulative Parameter Featuresmentioning

confidence: 99%

A Review on the Applications of Acoustic Emission Technique in the Study of Stress Corrosion Cracking

Calabrese

Proverbio

2020

CMD

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The complex nature of the damage evolution in stress corrosion cracking (SCC) leads to explore for new investigation technologies in order to better identify the mechanisms that supervise the initiation and evolution of the damage as well to provide an improvement of knowledge on this critical localized corrosion form during time. Research activities concerning the use of acoustic emission (AE) technique to assess SCC has acquiring considerably relevance in recent decades. The non-invasiveness and the possibility to provide a continuous in situ monitoring of structures and components make this non-destructive technique clearly promising in the field of structural health monitoring. In this concern, this paper aims to be a focused overview on the evaluation of SCC phenomena by AE technique. The main topic of this review is centered on the approaches that can be used in elaborating AE data to better discriminate the mechanisms that contribute to damage propagation in SCC conditions. Based on available literature, investigation approaches assessing AE waveform parameters were classified, evidencing, furthermore, the identified mechanisms that synergistically take place during the material degradation. Eventually, a brief summary and a future trend evaluation was also reported.

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On the mechanism of intergranular stress corrosion cracking of sensitized stainless steel in tetrathionate solution

Cited by 17 publications

References 9 publications

Comprehensive Simultaneous Kinetic Study of Sulfitolysis and Thiosulfatolysis of Tetrathionate Ion: Unravelling the Unique pH Dependence of Thiosulfatolysis

Comprehensive Simultaneous Kinetic Study of Sulfitolysis and Thiosulfatolysis of Tetrathionate Ion: Unravelling the Unique pH Dependence of Thiosulfatolysis

Early identification of stress corrosion cracking of P110 low alloy steel in downhole fluid by electrochemical noise measurement

A Review on the Applications of Acoustic Emission Technique in the Study of Stress Corrosion Cracking

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