O. E. Narivskyi, G. V. Snizhnoi, T. V. Pulina, V. L. Snizhnoi, N. A. Solidor
{"title":"AISI 304 和 08Kh18N10 钢的特定磁感应强度对其在含氯环境中极限电位的影响","authors":"O. E. Narivskyi, G. V. Snizhnoi, T. V. Pulina, V. L. Snizhnoi, N. A. Solidor","doi":"10.1007/s11003-024-00824-4","DOIUrl":null,"url":null,"abstract":"<p>The resistance of AISI 304 and 08Kh18N10 steels to crevice corrosion in chloride-containing media was studied using potential-dynamic methods. The preset gap width of 0.3 mm between the sample and the counter body simulates the gap between adjacent plates of plate-like heat exchangers. The area of the hysteresis loop of the constructed anode potential-dynamic curves of the forward and reverse stroke was used to compare the volume of local damage caused by crevice corrosion of the studied steels. The maximum areas of the steel hysteresis loop and the volume of local corrosion damage in the ingots with the lowest (2.23×10<sup>–8</sup> and 2.24×10<sup>–8</sup> m<sup>3</sup>/kg) and highest (2.31×10<sup>–8</sup> m<sup>3</sup>/kg) values of the specific paramagnetic susceptibility χ<sub>0</sub> of austenite were established. The free corrosion potential <i>E</i><sub>corr</sub> of steels intensively shifts in the negative direction (from –0.28 up to –0.41), and the repassivation <i>E</i><sub>rp</sub> and crevice corrosion <i>E</i><sub>crev</sub> – in the positive direction from –0.38 up to –0.29 and from –0.1 to 0.1 V, respectively, with an increase in the parameter χ<sub>0</sub> from 2.23×10<sup>–8</sup> up to 2.25×10<sup>–8</sup> m<sup>3</sup>/kg, which contributes to an increase in their ∆<i>E</i>-criterion from 0.02 up to 0.69 V and resistance to crevice corrosion. This is because, in this range of values, the change in the χ<sub>0</sub> parameter is determined by deviations in the content of C, N, S, P, and Cr in the solid solution of austenite in steels. With an increase in the parameter χ<sub>0</sub> of steels to 2.31×10<sup>–8</sup> m<sup>3</sup>/kg, their potential <i>E</i><sub>corr</sub> shifts in the positive direction from –0.41 up to –0.32, and <i>E</i><sub>rp</sub> , <i>E</i><sub>crev</sub> – in the negative direction from 0.29 up to 0.15 and from 0.10 up to –0.02 V, respectively, which contributes to a decrease in the ∆<i>E</i> criterion of steels from 0.65 up to 0.14 V and their resistance to crevice corrosion. The χ<sub>0</sub> parameter of steels is an integral characteristic of the paramagnetic state of austenite and can be used to assess their resistance to crevice corrosion in chloride-containing media.</p>","PeriodicalId":18230,"journal":{"name":"Materials Science","volume":"58 1","pages":""},"PeriodicalIF":0.7000,"publicationDate":"2024-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Effect of Specific Magnetic Susceptibility of AISI 304 and 08Kh18N10 Steels on Their Limiting Potentials in Chloride-Containing Environments\",\"authors\":\"O. E. Narivskyi, G. V. Snizhnoi, T. V. Pulina, V. L. Snizhnoi, N. A. Solidor\",\"doi\":\"10.1007/s11003-024-00824-4\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>The resistance of AISI 304 and 08Kh18N10 steels to crevice corrosion in chloride-containing media was studied using potential-dynamic methods. The preset gap width of 0.3 mm between the sample and the counter body simulates the gap between adjacent plates of plate-like heat exchangers. The area of the hysteresis loop of the constructed anode potential-dynamic curves of the forward and reverse stroke was used to compare the volume of local damage caused by crevice corrosion of the studied steels. The maximum areas of the steel hysteresis loop and the volume of local corrosion damage in the ingots with the lowest (2.23×10<sup>–8</sup> and 2.24×10<sup>–8</sup> m<sup>3</sup>/kg) and highest (2.31×10<sup>–8</sup> m<sup>3</sup>/kg) values of the specific paramagnetic susceptibility χ<sub>0</sub> of austenite were established. The free corrosion potential <i>E</i><sub>corr</sub> of steels intensively shifts in the negative direction (from –0.28 up to –0.41), and the repassivation <i>E</i><sub>rp</sub> and crevice corrosion <i>E</i><sub>crev</sub> – in the positive direction from –0.38 up to –0.29 and from –0.1 to 0.1 V, respectively, with an increase in the parameter χ<sub>0</sub> from 2.23×10<sup>–8</sup> up to 2.25×10<sup>–8</sup> m<sup>3</sup>/kg, which contributes to an increase in their ∆<i>E</i>-criterion from 0.02 up to 0.69 V and resistance to crevice corrosion. This is because, in this range of values, the change in the χ<sub>0</sub> parameter is determined by deviations in the content of C, N, S, P, and Cr in the solid solution of austenite in steels. With an increase in the parameter χ<sub>0</sub> of steels to 2.31×10<sup>–8</sup> m<sup>3</sup>/kg, their potential <i>E</i><sub>corr</sub> shifts in the positive direction from –0.41 up to –0.32, and <i>E</i><sub>rp</sub> , <i>E</i><sub>crev</sub> – in the negative direction from 0.29 up to 0.15 and from 0.10 up to –0.02 V, respectively, which contributes to a decrease in the ∆<i>E</i> criterion of steels from 0.65 up to 0.14 V and their resistance to crevice corrosion. The χ<sub>0</sub> parameter of steels is an integral characteristic of the paramagnetic state of austenite and can be used to assess their resistance to crevice corrosion in chloride-containing media.</p>\",\"PeriodicalId\":18230,\"journal\":{\"name\":\"Materials Science\",\"volume\":\"58 1\",\"pages\":\"\"},\"PeriodicalIF\":0.7000,\"publicationDate\":\"2024-08-07\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Materials Science\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://doi.org/10.1007/s11003-024-00824-4\",\"RegionNum\":4,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Materials Science","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1007/s11003-024-00824-4","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
Effect of Specific Magnetic Susceptibility of AISI 304 and 08Kh18N10 Steels on Their Limiting Potentials in Chloride-Containing Environments
The resistance of AISI 304 and 08Kh18N10 steels to crevice corrosion in chloride-containing media was studied using potential-dynamic methods. The preset gap width of 0.3 mm between the sample and the counter body simulates the gap between adjacent plates of plate-like heat exchangers. The area of the hysteresis loop of the constructed anode potential-dynamic curves of the forward and reverse stroke was used to compare the volume of local damage caused by crevice corrosion of the studied steels. The maximum areas of the steel hysteresis loop and the volume of local corrosion damage in the ingots with the lowest (2.23×10–8 and 2.24×10–8 m3/kg) and highest (2.31×10–8 m3/kg) values of the specific paramagnetic susceptibility χ0 of austenite were established. The free corrosion potential Ecorr of steels intensively shifts in the negative direction (from –0.28 up to –0.41), and the repassivation Erp and crevice corrosion Ecrev – in the positive direction from –0.38 up to –0.29 and from –0.1 to 0.1 V, respectively, with an increase in the parameter χ0 from 2.23×10–8 up to 2.25×10–8 m3/kg, which contributes to an increase in their ∆E-criterion from 0.02 up to 0.69 V and resistance to crevice corrosion. This is because, in this range of values, the change in the χ0 parameter is determined by deviations in the content of C, N, S, P, and Cr in the solid solution of austenite in steels. With an increase in the parameter χ0 of steels to 2.31×10–8 m3/kg, their potential Ecorr shifts in the positive direction from –0.41 up to –0.32, and Erp , Ecrev – in the negative direction from 0.29 up to 0.15 and from 0.10 up to –0.02 V, respectively, which contributes to a decrease in the ∆E criterion of steels from 0.65 up to 0.14 V and their resistance to crevice corrosion. The χ0 parameter of steels is an integral characteristic of the paramagnetic state of austenite and can be used to assess their resistance to crevice corrosion in chloride-containing media.
期刊介绍:
Materials Science reports on current research into such problems as cracking, fatigue and fracture, especially in active environments as well as corrosion and anticorrosion protection of structural metallic and polymer materials, and the development of new materials.