Oxidation of Metals最新文献

筛选
英文 中文
Very Long Transient Oxidation of a Nickel-based Single-Crystal Superalloy at 900 °C and 850 °C 镍基单晶超级合金在 900 °C 和 850 °C 下的超长瞬态氧化
IF 2.1 3区 材料科学
Oxidation of Metals Pub Date : 2024-07-27 DOI: 10.1007/s11085-024-10261-y
Martin Batiste, Thomas Perez, Tom Sanviemvongsak, Clara Desgranges, Daniel Monceau
{"title":"Very Long Transient Oxidation of a Nickel-based Single-Crystal Superalloy at 900 °C and 850 °C","authors":"Martin Batiste,&nbsp;Thomas Perez,&nbsp;Tom Sanviemvongsak,&nbsp;Clara Desgranges,&nbsp;Daniel Monceau","doi":"10.1007/s11085-024-10261-y","DOIUrl":"10.1007/s11085-024-10261-y","url":null,"abstract":"<div><p>The isothermal oxidation of Ni-base single-crystal superalloy AM1 was investigated for up to 3600 h at 850 °C and 900 °C. The aim of the study was to test an existing model of oxidation kinetics that considers transitory oxide growth. The samples were characterized at various intervals to correlate the microstructure of the oxide scale with the oxidation kinetics. Transition alumina (<i>θ</i>) was observed among other transition oxides such as spinel, rutile, and chromia, which helped in understanding the nature and kinetics of the transitory stage. After a sufficiently long duration, all samples formed a continuous <i>α</i>-alumina layer at the metal/oxide interface. The previously published model, based on three kinetic parameters, was validated in the temperature range of 800–1200 °C. The duration of the transient regime characterized in this study at 850 °C and 900 °C was consistent with the kinetics model, with a slight increase in the value of the model parameter describing the lateral growth kinetics of <i>α</i>-alumina. This modification resulted in a slight reduction in the duration of the transient regime at low temperatures.</p></div>","PeriodicalId":724,"journal":{"name":"Oxidation of Metals","volume":"101 5","pages":"935 - 948"},"PeriodicalIF":2.1,"publicationDate":"2024-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11085-024-10261-y.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141780856","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Deep Intergranular Fluoride Attack by High-Temperature Corrosion on Alloy 625 by LiF in Air at 600 °C 600 °C 空气中锂辉石对合金 625 高温腐蚀造成的深层晶间氟化物侵蚀
IF 2.1 3区 材料科学
Oxidation of Metals Pub Date : 2024-07-27 DOI: 10.1007/s11085-024-10259-6
Aida Nikbakht, Behnam Bahramian, Christine Geers
{"title":"Deep Intergranular Fluoride Attack by High-Temperature Corrosion on Alloy 625 by LiF in Air at 600 °C","authors":"Aida Nikbakht,&nbsp;Behnam Bahramian,&nbsp;Christine Geers","doi":"10.1007/s11085-024-10259-6","DOIUrl":"10.1007/s11085-024-10259-6","url":null,"abstract":"<div><p>In most chemical and high-temperature processes, metals are exposed to temperature gradients which, in turn, affect the extent of corrosion phenomena. In this study, a long, continuous strip of alloy 625 was exposed to lithium fluoride in a temperature range of 50–600 °C, air environment. The hottest section of this strip was analyzed as a coupon and compared with two other coupons which were exposed isothermally. One of the isothermal exposures was carried out in a tube furnace, and the other one was in a vertical furnace. Oxygen had three different kinds of access to these three coupons, which, in turn, affected the corrosion process. In order to limit the access of oxygen, a long column of lithium fluoride was used in a vertical furnace. The results of the isothermal exposure showed that more access of oxygen in a horizontal tube furnace facilitated the fluoride ingress to a great extent. However, a long sample exposed to a temperature gradient suffered more corrosion attack than the isothermal coupon, under the same LiF load in the vertical furnace. This was associated with the reduction of oxygen at a larger cathode area reaching into colder regions in Inconel 625 strip. Increased oxygen reduction also increases the efficiency of an inner anode at the hottest section, causing the observed rapid intergranular fluoride uptake. The study proposes a mechanism explaining these observations.</p></div>","PeriodicalId":724,"journal":{"name":"Oxidation of Metals","volume":"101 5","pages":"1055 - 1066"},"PeriodicalIF":2.1,"publicationDate":"2024-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11085-024-10259-6.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141780857","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Chemical Degradation of the Ternary Al2O3–YAG–ZrO2 Eutectic Ceramic by Molten CMAS 熔融 CMAS 对 Al2O3-YAG-ZrO2 三元共晶陶瓷的化学降解作用
IF 2.1 3区 材料科学
Oxidation of Metals Pub Date : 2024-07-26 DOI: 10.1007/s11085-024-10258-7
L. Portebois, S. Mathieu, M. Vilasi, P. Berthod, P-J. Panteix, M. Podgorski
{"title":"Chemical Degradation of the Ternary Al2O3–YAG–ZrO2 Eutectic Ceramic by Molten CMAS","authors":"L. Portebois,&nbsp;S. Mathieu,&nbsp;M. Vilasi,&nbsp;P. Berthod,&nbsp;P-J. Panteix,&nbsp;M. Podgorski","doi":"10.1007/s11085-024-10258-7","DOIUrl":"10.1007/s11085-024-10258-7","url":null,"abstract":"<div><p>Regarding potential high temperature applications of materials based on the ternary Al<sub>2</sub>O<sub>3</sub>-YAG-ZrO<sub>2</sub> (AYZ) eutectic system for turbine blades, their environmental behaviour has to be evaluated in near-service conditions. CMAS attack is one of the phenomena limiting lifetime of ceramic E/TBC coatings for aircraft engines. The present study reports an assessment of the reactivity of AYZ eutectic material facing with two molten CMAS. The effect of test duration (up to 500 h), CMAS composition (with or without Fe<sub>2</sub>O<sub>3</sub>), microstructure (interlamellar distance), temperature (1250 and 1350 °C) as well as thermal cycling resistance were investigated. Results evidenced that the interaction of CMAS with AYZ eutectic ceramic was limited regardless of the microstructure. No infiltration of molten CMAS within the eutectic ceramic nor mechanical rupture between CMAS and AYZ was observed. The dissolution of AYZ leads to the rapid formation of anorthite with the CMAS components that hinders further reactions. The inward growth of MgAl<sub>2</sub>O<sub>4</sub> spinel in place of the Al<sub>2</sub>O<sub>3</sub> network occurs in accordance with the thermodynamic available data and without any effect on AYZ integrity.</p></div>","PeriodicalId":724,"journal":{"name":"Oxidation of Metals","volume":"101 5","pages":"1117 - 1128"},"PeriodicalIF":2.1,"publicationDate":"2024-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141780852","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Oxidation of Ni–30Cr Alloy at Low Temperature and Low Oxygen Partial Pressure: Experimental Methods to Improve Kinetics Constants Determination Ni-30Cr 合金在低温和低氧分压下的氧化:改进动力学常数测定的实验方法
IF 2.1 3区 材料科学
Oxidation of Metals Pub Date : 2024-07-26 DOI: 10.1007/s11085-024-10270-x
S. Bosonnet, X. Huang, L. Bataillou, L. Martinelli, Paul C. M. Fossati, Laurence Latu-Romain, Yves Wouters, C. Desgranges, D. Monceau
{"title":"Oxidation of Ni–30Cr Alloy at Low Temperature and Low Oxygen Partial Pressure: Experimental Methods to Improve Kinetics Constants Determination","authors":"S. Bosonnet,&nbsp;X. Huang,&nbsp;L. Bataillou,&nbsp;L. Martinelli,&nbsp;Paul C. M. Fossati,&nbsp;Laurence Latu-Romain,&nbsp;Yves Wouters,&nbsp;C. Desgranges,&nbsp;D. Monceau","doi":"10.1007/s11085-024-10270-x","DOIUrl":"10.1007/s11085-024-10270-x","url":null,"abstract":"<div><p>Ni–30Cr model alloy was used to study chromia-scale formation behaviour. During its formation the mass variation signal is weak and it is important to take specific care to measure oxidation kinetics by thermogravimetric analysis. Symmetrical design allows the determination of very small mass changes in compensating buoyancy effects and limiting measurement drift. The mass variation measurement comprises noise coming from different sources that affects the electronic signal. It must be minimised to improve accuracy. This involves keeping the room-temperature constant, strictly balancing the beam and minimising buoyancy effects. By this way it was possible to acquire kinetics and to measured rate constants, <i>k</i><sub><i>p</i></sub>, in a range from 3.10<sup>–5</sup> to 3.10<sup>–10</sup> mg<sup>2</sup>.cm<sup>−4</sup>.s<sup>−1</sup> equivalent to 10<sup>–12</sup> down to 10<sup>–17</sup> cm<sup>2</sup>.s<sup>−1</sup>. Oxygen partial pressure (<span>({P}_{{O}_{2}})</span>) was monitor and revealed an abnormal consumption of oxygen at the beginning of the thermal exposure. Experiments with an inert material showed parasitic reactions identified by mass spectrometry as combustion of impurities. As oxygen consumption is not only due to oxidation of the sample, corrosion kinetics can’t be deduced from it. Hence, to determine whether the oxygen supply from the gas is a limiting parameter, a model, which quantifies oxygen consumption by sample oxidation within the thermobalance, is proposed.</p></div>","PeriodicalId":724,"journal":{"name":"Oxidation of Metals","volume":"101 5","pages":"1197 - 1209"},"PeriodicalIF":2.1,"publicationDate":"2024-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11085-024-10270-x.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141780855","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Low-Temperature Hot Corrosion Behavior of DS200 + Hf Nickel-Based Superalloy At 650 °C 650 °C 时 DS200 + Hf 镍基超级合金的低温热腐蚀性能
IF 2.1 3区 材料科学
Oxidation of Metals Pub Date : 2024-07-26 DOI: 10.1007/s11085-024-10262-x
G. Dufour, D. Texier, T. Sanviemvongsak, T. Perez, J. Bonnal, S. Knittel, D. Bonina, M. Vilasi, S. Mathieu
{"title":"Low-Temperature Hot Corrosion Behavior of DS200 + Hf Nickel-Based Superalloy At 650 °C","authors":"G. Dufour,&nbsp;D. Texier,&nbsp;T. Sanviemvongsak,&nbsp;T. Perez,&nbsp;J. Bonnal,&nbsp;S. Knittel,&nbsp;D. Bonina,&nbsp;M. Vilasi,&nbsp;S. Mathieu","doi":"10.1007/s11085-024-10262-x","DOIUrl":"10.1007/s11085-024-10262-x","url":null,"abstract":"<div><p>The morphologies of Type-II hot corrosion attacks were investigated at 650 °C for the DS200 + Hf nickel-based superalloy. The relationship between corrosion rate and microstructural features, i.e., grain boundaries, carbides, eutectics, dendrites, was considered at different scales and for three environments. Corrosion tests and related characterizations were carried out on a total of forty-five samples, including different sampling strategies, test conditions (air, air + 150 ppm SO<sub>2</sub> and air+  400 ppm SO<sub>2</sub>) and exposure times (24, 50 and 100 h). The amount of SO<sub>2</sub> in the inlet gas was found to be the main factor in the degradation, affecting both the duration of the incubation period and directly the corrosion rate. The proportion of grain boundaries as well as their orientation did not have any influence on the degradation kinetics. On the contrary, MC carbides and γ + γ′ eutectic pools, i.e., the interdendritic area resulting from the solidification stage, underwent deeper attacks for all gaseous atmospheres. The global mechanism can be explained by the SO<sub>3</sub>-induced hot corrosion mechanism.</p></div>","PeriodicalId":724,"journal":{"name":"Oxidation of Metals","volume":"101 5","pages":"1027 - 1039"},"PeriodicalIF":2.1,"publicationDate":"2024-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141780853","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Influence of Oxidation Temperature on the Tensile Behaviour in a 2.5 D Needled Carbon/Carbon Composite for Aircraft Brakes 氧化温度对飞机制动器用 2.5 D 针状碳/碳复合材料拉伸行为的影响
IF 2.1 3区 材料科学
Oxidation of Metals Pub Date : 2024-07-26 DOI: 10.1007/s11085-024-10254-x
Théo Zubiaurre, Matteo Lunghi, Jérome Favergeon, Zoheir Aboura
{"title":"Influence of Oxidation Temperature on the Tensile Behaviour in a 2.5 D Needled Carbon/Carbon Composite for Aircraft Brakes","authors":"Théo Zubiaurre,&nbsp;Matteo Lunghi,&nbsp;Jérome Favergeon,&nbsp;Zoheir Aboura","doi":"10.1007/s11085-024-10254-x","DOIUrl":"10.1007/s11085-024-10254-x","url":null,"abstract":"<div><p>An air-oxidized carbon/carbon (c/c) composite was studied under tensile conditions to examine oxidation temperature’s influence on its behaviour and on the residual mechanical properties. Three oxidation temperatures were tested with oxidation duration chosen to obtain the same weight loss on the samples at each temperature. Notable differences were found in the material’s behaviour depending on the oxidation temperatures. These results show that the weight loss criterion commonly used in the literature to quantify c/c composite oxidation needs to be complete to reflect the actual state of the material after oxidation. Microscopic observations revealed different oxidation patterns that underlined a heterogeneous consumption of the material from one temperature to another. Consequently, a non-destructive-test based on ultrasonic signals was explored in order to complete the weight loss criterion. Variations of weight loss at each exposure oxidation temperature were correctly assessed, and the technique was able to discriminate the oxidation temperatures above 5% of weight loss. The low-temperature oxidation behaviour is discussed and an explanation based on a variation on the attack of the fibre/matrix interfaces that could explain the difference of the tensile behaviour is proposed.</p></div>","PeriodicalId":724,"journal":{"name":"Oxidation of Metals","volume":"101 5","pages":"983 - 995"},"PeriodicalIF":2.1,"publicationDate":"2024-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141780854","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Flow Reactor Experiments of High-Temperature Graphite Oxidation and Nitridation 高温石墨氧化和氮化的流动反应器实验
IF 2.1 3区 材料科学
Oxidation of Metals Pub Date : 2024-07-25 DOI: 10.1007/s11085-024-10253-y
Nicholas A. Anderson, Philip Zolfaghari, Souvik Bhattacharya, Lorenzo Capponi, Trey Oldham, R. Mohan Sankaran, Gregory S. Elliott, Francesco Panerai
{"title":"Flow Reactor Experiments of High-Temperature Graphite Oxidation and Nitridation","authors":"Nicholas A. Anderson,&nbsp;Philip Zolfaghari,&nbsp;Souvik Bhattacharya,&nbsp;Lorenzo Capponi,&nbsp;Trey Oldham,&nbsp;R. Mohan Sankaran,&nbsp;Gregory S. Elliott,&nbsp;Francesco Panerai","doi":"10.1007/s11085-024-10253-y","DOIUrl":"10.1007/s11085-024-10253-y","url":null,"abstract":"<div><p>Predicting the gas-surface interactions of solid carbon is necessary for the design of many engineering systems that employ graphite. Experimental determination of the reaction rates improves the fidelity of those predictions. Here, we studied oxidation and nitridation of graphite by thermal and nonthermal plasma assisted processes. Experiments were conducted at a pressure of 2 kPa, higher than previous flow reactor experiments of this kind and closer to the conditions experienced in engineering applications. At these higher pressures, the limitations of mass transport and the interference between oxygen and nitrogen species become important. Reaction rates were determined from mass loss, reaction products were identified with mass spectrometry, and surface roughening was characterized by electron microscopy.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":724,"journal":{"name":"Oxidation of Metals","volume":"101 1 supplement","pages":"185 - 201"},"PeriodicalIF":2.1,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141780859","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Understanding and Predicting the Thermodynamic Behavior of Fission Products Encountered Between the (U,Pu)O2 Fuel Pellet and the Cladding: Characterization and Modeling Approaches 理解和预测(U,Pu)O2燃料芯块和包层之间遇到的裂变产物的热力学行为:表征和建模方法
IF 2.1 3区 材料科学
Oxidation of Metals Pub Date : 2024-07-24 DOI: 10.1007/s11085-024-10266-7
Mostafa Oulfarsi, Christine Guéneau, Kevin Ginestar, Raphaëlle Guillou, Laure Martinelli
{"title":"Understanding and Predicting the Thermodynamic Behavior of Fission Products Encountered Between the (U,Pu)O2 Fuel Pellet and the Cladding: Characterization and Modeling Approaches","authors":"Mostafa Oulfarsi,&nbsp;Christine Guéneau,&nbsp;Kevin Ginestar,&nbsp;Raphaëlle Guillou,&nbsp;Laure Martinelli","doi":"10.1007/s11085-024-10266-7","DOIUrl":"10.1007/s11085-024-10266-7","url":null,"abstract":"<div><p>This study provides a comprehensive investigation of the formation and behavior of a layer enriched in fission products encountered between the (U,Pu)O<sub>2</sub> fuel pellet and the cladding, designated as JOG (“Joint Oxyde Gaine” in French). Employing a multifaceted approach that combined thermodynamic calculations, experimental synthesis, and advanced characterization techniques, simulated JOG has been synthetized (without radioactive fission products). Using thermodynamic calculations with the TAF-ID database, the phase compositions in the JOG was assessed for various temperatures, pressures, and oxygen potential conditions, revealing insights into the environmental factors influencing JOG formation. Experimental simulation of the JOG composition, exposed to controlled conditions, confirmed the presence of key compounds such as Cs<sub>2</sub>MoO<sub>4</sub>, CsI, and PdTe, as evidenced by SEM, EDS, and XRD analyses. The results of the calculations highlighted notable differences in the nature of the phases constituting the JOG under varying pressure and oxygen potential conditions. At 873 K and oxygen partial pressure of 10<sup>–4</sup> bar, Cs<sub>2</sub>MoO<sub>4</sub>, Pd–Te, and a gas phase rich in tellurium and CsI were predominant, contrasting with the emergence of liquid phases at 70 bar. This study offered a comprehensive understanding of JOG microstructure, and highlighting the importance of accurate characterization for reactor safety. This information lays the foundations for future studies on the chemical interaction between the JOG and the steel cladding.</p></div>","PeriodicalId":724,"journal":{"name":"Oxidation of Metals","volume":"101 5","pages":"911 - 922"},"PeriodicalIF":2.1,"publicationDate":"2024-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11085-024-10266-7.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141780911","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Novel Chromium–Silicon Slurry Coatings for Hot Corrosion Environments 用于热腐蚀环境的新型铬硅浆涂料
IF 2.1 3区 材料科学
Oxidation of Metals Pub Date : 2024-07-24 DOI: 10.1007/s11085-024-10257-8
M. Kerbstadt, K. Ma, E. M. H. White, A. J. Knowles, M. C. Galetz
{"title":"Novel Chromium–Silicon Slurry Coatings for Hot Corrosion Environments","authors":"M. Kerbstadt,&nbsp;K. Ma,&nbsp;E. M. H. White,&nbsp;A. J. Knowles,&nbsp;M. C. Galetz","doi":"10.1007/s11085-024-10257-8","DOIUrl":"10.1007/s11085-024-10257-8","url":null,"abstract":"<div><p>Ni-based superalloys are commonly used in gas turbines because of their exceptional high-temperature mechanical properties. To secure a long service life, the materials must also have sufficient corrosion resistance. Therefore, diffusion coatings are widely used to enrich the surface in protective oxide scale-forming elements. For temperatures between 650 and 950 °C, where hot corrosion occurs, Cr-based coatings are advantageous. These are commonly applied via the laborious pack cementation process. Recently, a novel cost-effective Cr/Si slurry coating process has been developed which demonstrated resistance to oxidative high-temperature environments. Here, the protection of the slurry coatings against hot corrosion type I at 900 °C on the Ni-based superalloy Rene 80 is investigated and compared to coatings produced by pack cementation. Prior to the 300-h exposures in air containing 0.1% SO<sub>2</sub> at 900 °C, 4 mg/cm<sup>2</sup> of Na<sub>2</sub>SO<sub>4</sub> was deposited on the material surfaces. The uncoated Rene 80 exhibited rapid dissolution of the initial oxide scale followed by catastrophic break away oxidation. In comparison, the slurry coatings showed significantly improved hot corrosion resistance compared to the uncoated alloy and a better protection than a Cr pack cementation coating. The Cr pack cemented Rene 80 showed improved hot corrosion resistance, but Cr depletion in the subsurface zone occurred with increasing exposure time, associated with the propagation of Al internal oxidation and increasing sulfidation. In contrast, the slurry coatings formed an external Cr<sub>2</sub>O<sub>3</sub> scale coupled with an agglomeration of SiO<sub>2</sub> underneath and a continuous Al<sub>2</sub>O<sub>3</sub> subscale which offered a better diffusion barrier and leading to superior long-term protection against hot corrosion.</p></div>","PeriodicalId":724,"journal":{"name":"Oxidation of Metals","volume":"101 5","pages":"1077 - 1089"},"PeriodicalIF":2.1,"publicationDate":"2024-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11085-024-10257-8.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141780910","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The Impact of HCl on Alkali-Induced Corrosion of Stainless Steels/FeCrAl Alloy at 600 °C: The Story After Breakaway 盐酸对 600 °C 下不锈钢/铁铬铝合金碱诱导腐蚀的影响:断裂后的故事
IF 2.1 3区 材料科学
Oxidation of Metals Pub Date : 2024-07-22 DOI: 10.1007/s11085-024-10265-8
Vicent Ssenteza, Torbjörn Jonsson, Johanna Nockert, Jesper Liske
{"title":"The Impact of HCl on Alkali-Induced Corrosion of Stainless Steels/FeCrAl Alloy at 600 °C: The Story After Breakaway","authors":"Vicent Ssenteza,&nbsp;Torbjörn Jonsson,&nbsp;Johanna Nockert,&nbsp;Jesper Liske","doi":"10.1007/s11085-024-10265-8","DOIUrl":"10.1007/s11085-024-10265-8","url":null,"abstract":"<div><p>The impact of Cl on alkali-induced high-temperature corrosion of stainless steels/FeCrAl alloys after breakaway oxidation was investigated in a simulated biomass- and waste-fired boiler environment at 600 °C. For this investigation, three alloys were exposed to low Cl load environment (H<sub>2</sub>O+KCl) and to high Cl load (H<sub>2</sub>O+KCl+HCl). Post-exposure analysis showed that the stainless steel SVM12 experiences fast oxidation and forms thick double-layered Fe-rich oxide scales. The corrosion attack is further accelerated with addition of HCl for this material with the effect being more pronounced in the inward-growing scale. The FeCrAl and FeCrNi alloys exhibit slower oxidation kinetics after the breakaway corrosion compared to SVM12 in the H<sub>2</sub>O+KCl exposure. Furthermore, in contrast with SVM12, the addition of HCl did not accelerate the corrosion attack on these alloys. It is argued that the properties of the secondary oxide layer formed after breakaway corrosion are important in the continued corrosion resistance against chlorine-induced corrosion attack. Especially, the Cr content in the inner scales is suggested to be important in corrosion mitigation.</p></div>","PeriodicalId":724,"journal":{"name":"Oxidation of Metals","volume":"101 5","pages":"1067 - 1076"},"PeriodicalIF":2.1,"publicationDate":"2024-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11085-024-10265-8.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141780912","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信