Article
Materials Science, Multidisciplinary
Chao Liu, Peng Jin, Tielong Shen, Zhiguang Wang
Summary: The microstructural evolution and dissolved oxygen of the oxide film formed on 15-15Ti austenitic stainless steel during early oxidation in steam at 500 degrees C were investigated. A triplex oxide structure consisting of outer Fe-rich layer, inner Cr-rich layer, and Ni-rich transition layer was observed. The relationship between corrosion resistance and oxide structure was discussed, and a mechanism for pore formation in the inner oxide layer of austenitic steel was proposed based on Ni's spatial distribution and migration behavior during oxidation.
Article
Materials Science, Multidisciplinary
Yiliang Lu, Zheng Chen, Cheng Wang, Qingqing Zhao, Kai Zhang, Yao Du, Li Xin, Shenglong Zhu, Fuhui Wang
Summary: A nano-modified silicone-based composite coating was developed to protect 304 stainless steel under cyclically alternate corrosion conditions. The coating consists of a continuous amorphous SiO2 matrix, dispersive Al, Al2O3, TiO2 and ZrO2 particles, and discrete voids, which significantly improved the corrosion resistance of 304SS in environments containing NaCl deposit and oxygen at 400 degrees Celsius.
Article
Materials Science, Multidisciplinary
Litao Chang, Kudzanai Mukahiwa, Liberato Volpe, Fabio Scenini
Summary: The oxidation mechanisms of 316L stainless steel in high-temperature hydrogenated water were found to be faster on machined surfaces compared to polished surfaces, due to the formation of a similar to 2 μm thick ultrafine-grained layer on the machined surfaces. This layer developed a more porous and fine-grained inner oxide than that on polished surfaces, leading to accelerated oxygen anions and metal cations diffusion through the oxide pores and grain boundaries.
Article
Materials Science, Multidisciplinary
Robert Wonneberger, Gloria Kirste, Martin Seyring, Martin Hafermann, Carsten Ronning, Maximilian Schaal, Felix Otto, Torsten Fritz, Andreas Undisz
Summary: Understanding the growth mechanism of oxide layer on 316 L requires knowledge of reaction front position, oxide phase formation, and elements diffusion paths. By using Mn as a tracer in a new experimental approach, essential information of the early stages of oxidation up to 600 °C is obtained. The study suggests a previously undocumented role of Cr valence state during oxide growth, as Cr6+ is detected at 600 °C.
Article
Materials Science, Multidisciplinary
Minghua Su, Jianhua Zhao, Zenghui Tian, Cheng Gu
Summary: The oxidation behavior and microstructure evolution of 304 stainless steel at 900-1200℃ in N-2-21 vol%O-2 were investigated. The results show that the oxide scale formed at higher temperatures has a unique morphology consisting of different phases and layers.
Article
Nuclear Science & Technology
Youwei Xu, Binhui Yang, Yu Shi
Summary: This study investigated the stress-assisted oxidation behavior of Inconel 52 M/316 austenitic stainless-steel dissimilar weld joints in a simulated pressurized water reactor environment. A corrosion galvanic couple was formed due to differences in nonferrous metal content, resulting in ridge-like oxide depositions.
NUCLEAR ENGINEERING AND TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
J. Hesketh, E. J. F. Dickinson, M. L. Martin, G. Hinds, A. Turnbull
Summary: Coupon immersion tests on 316L stainless steel in a simulated oilfield environment showed that H2S partial pressure affects pit depth and density, with the most significant pitting observed at intermediate pressures and inhibition of pitting at higher pressures. The pH in the pit solution plays a key role in determining the solubility of metal sulphides and the availability of free H2S for adsorption on the pit surface.
Article
Materials Science, Multidisciplinary
Jintao Lu, Jinyang Huang, Jiangwei Wang, Zhen Yang, Yuefeng Gu
Summary: The research revealed that the inward diffusion of Al played a dominant role in the degradation of the aluminide coating at 650 degrees C in static air. Despite a phase transformation, the concentration of Al remained sufficient to meet the requirements for alumina growth.
Article
Materials Science, Multidisciplinary
Jiaxu Wang, Wei Shi, Song Xiang, Ronald G. Ballinger
Summary: By using EPMA and TEM, it was found that there is a corrosion-sensitized zone around the grain boundary of high-nickel austenitic stainless steel 904L, with no significant element segregation, and the presence of sigma phase near the grain boundary.
Article
Materials Science, Multidisciplinary
L. Coghlan, S. Yan, A. Shin, J. Pearson, M. A. E. Jepson, R. L. Higginson
Summary: The microstructure of 9Cr-1Mo steel exposed to a CO2 rich atmosphere influences the size and distribution of carbides, elemental segregation, oxidation characteristics, morphology of the internal oxidation zone, and spinel structure, with ghosts of the prior substrate microstructure.
Article
Materials Science, Multidisciplinary
Xi Huang, Xiaoyan Li, Zixiong Zhan, Kai Xiao, Xiaodong Fang, Zhenghe Li
Summary: The aim of this study was to investigate the effect of pre-oxidation treatment on the corrosion behavior of 316L stainless steel in a high-temperature water environment. The results indicate that the selected pre-oxidation process improved the corrosion resistance of 316L stainless steel in a high-temperature water environment and formed a triple layer oxide film.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2022)
Article
Chemistry, Physical
Nathalie Siredey-Schwaller, Pierre Charbonnier, Yudong Zhang, Julien Guyon, Olivier Perroud, Pascal Laheurte
Summary: This study focused on thermomechanical treatments of cold-deformed Biodur108(c), achieving increased hardness and secondary hardening phenomenon. The main mechanism was identified as the formation of small Cr2N precipitates and a BCC phase along grain boundaries and sub-grain boundaries.
Article
Materials Science, Multidisciplinary
Yuyang Hou, Yudai Nakamori, Kota Kadoi, Hiroshige Inoue, Hayato Baba
Summary: The pitting corrosion resistance of duplex stainless steel welds was investigated. It was found that pitting corrosion mainly occurs in the high-temperature heat-affected zone and is initiated by (Ti, Cr)N in the ferrite. Titanium-containing nitrides can precipitate in the heat-affected zone even with a low titanium content. The lack of a passive film on the (Ti, Cr)N surface also contributes to pitting corrosion initiation.
Article
Materials Science, Multidisciplinary
S. S. M. Tavares, A. R. Pimenta, R. C. P. Loureiro, J. Dille, L. Malet
Summary: The precipitation of chromium nitrides in W-alloyed superduplex stainless steel was investigated. Solution treatment followed by water quenching resulted in a microstructure containing ferrite, austenite, and quenched-in nitrides. A high density of chromium nitrides was detected in the ferrite phase, which was observed through various microscopy techniques. Transmission electron microscopy revealed two types of chromium nitrides: larger particles and needle-like nanosized particles. The nanosized nitrides were found to be coherent with the ferritic matrix and displayed a specific orientation relationship with ferrite. These fine precipitates contribute to the hardening of the ferrite phase through dislocation pinning.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2023)
Article
Materials Science, Multidisciplinary
Ruijun He, Shuo Zhu, Yun Wang, Xiao Han
Summary: In this study, the nitriding layer of modified AISI422 martensitic stainless steel was characterized using various methods to investigate the phase transformation and evolution during plasma nitriding. The study revealed the presence of γ'-Fe4N, micro holes, and continuous precipitation of CrN in the nitriding layer, with the morphology of CrN precipitation related to the depth of the nitriding layer. Additionally, the residual stress value was found to be influenced by the nitrogen content and the degree of CrN spinodal decomposition, with the maximum compressive stress occurring at a depth of 120 μm.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Geology
D. Fougerouse, S. M. Reddy, A-M Seydoux-Guillaume, C. L. Kirkland, T. M. Erickson, D. W. Saxey, W. D. A. Rickard, D. Jacob, H. Leroux, C. Clark
Summary: The study shows that narrow twins are completely reset during their formation, and the liberated lead likely migrates along fast diffusion pathways such as crystal defects. This research provides a new approach for understanding the history of accessory phases.
Article
Geochemistry & Geophysics
Luke Daly, Martin R. Lee, James R. Darling, Ingrid McCarrol, Limei Yang, Julie Cairney, Lucy V. Forman, Phillip A. Bland, Gretchen K. Benedix, Denis Fougerouse, William D. A. Rickard, David W. Saxey, Steven M. Reddy, William Smith, Paul A. J. Bagot
Summary: Research on hydrous phyllosilicate minerals from Mars and primitive asteroids requires new high-resolution tools, such as atom probe tomography (APT). The new APT approach revealed previously unobservable nanominerals and nanostructures within phyllosilicates, providing unique insights into the processes of water/rock interaction.
GEOSTANDARDS AND GEOANALYTICAL RESEARCH
(2021)
Article
Geochemistry & Geophysics
Tommaso Tacchetto, Steven M. Reddy, David W. Saxey, Denis Fougerouse, William D. A. Rickard, Chris Clark
Summary: Characterization of deformation-related low-angle boundaries in olivine reveals preferential segregation of trace elements to these interfaces, likely associated with subgrain rotation recrystallization and dislocation migration. This phenomenon has significant implications for understanding olivine deformation at mantle depth and the redistribution of elements deep in the Earth.
CONTRIBUTIONS TO MINERALOGY AND PETROLOGY
(2021)
Article
Geochemistry & Geophysics
Tommaso Tacchetto, Steven M. Reddy, Omar Bartoli, William D. A. Rickard, Denis Fougerouse, David W. Saxey, Zakaria Quadir, Chris Clark
Summary: Glassy melt inclusions found in peritectic garnets of a migmatite show a close spatial relationship with partially to totally crystallized melt inclusions. Analyses reveal a heterogeneous distribution of Na and K within the glass, as well as nanoscale spherical domains of various elements found along inclusion edges. The compositional similarity suggests a common origin between the glassy inclusions and nanogranitoids in terms of their formation and evolution.
CONTRIBUTIONS TO MINERALOGY AND PETROLOGY
(2021)
Article
Materials Science, Multidisciplinary
Denis Fougerouse, David W. Saxey, William D. A. Rickard, Steven M. Reddy, Rick Verberne
Summary: Well-defined reconstruction parameters are crucial for quantifying nanoscale features in atom probe tomography datasets. Testing various approaches, it was found that constraint length measurement of evaporated material provides more consistent results than tip radius measurement. Standardized parameters can alleviate potential problems in measuring nanoscale features caused by inappropriate parameters.
MICROSCOPY AND MICROANALYSIS
(2022)
Article
Geochemistry & Geophysics
M. J. Turuani, A. T. Laurent, A. -m. Seydoux-Guillaume, D. Fougerouse, D. Saxey, S. M. Reddy, S. L. Harley, S. Reynaud, W. D. A. Rickard
Summary: The discordance of U-Th-Pb isotopic systems in geochronometers and their interpretation remain major issues. This study investigated the discordant monazite from the Napier Complex in Antarctica to understand the relationship between discordance and the preservation of Pb*-bearing nanocrystals. The results highlight the potential of nanoscale studies of monazite to provide important details of the thermal history of complex metamorphic terranes.
EARTH AND PLANETARY SCIENCE LETTERS
(2022)
Article
Geochemistry & Geophysics
Rick Verberne, Steven M. Reddy, David W. Saxey, Denis Fougerouse, William D. A. Rickard, Zakaria Quadir, Noreen J. Evans, Chris Clark
Summary: Element mobility is crucial in geological processes, and understanding how elements migrate in minerals is essential for geochemical and geochronological applications. This study investigates the trace-element composition of dislocations on twin boundaries in rutile using atom probe tomography and transmission electron microscopy. The findings reveal that dislocations in rutile can act as both fast-diffusion pathways and traps for trace elements.
EARTH AND PLANETARY SCIENCE LETTERS
(2022)
Article
Nanoscience & Nanotechnology
Daniel K. K. Schreiber, Elizabeth J. J. Ka, Matthew J. J. Olszta, Karen Kruska, Angela Y. Y. Gerard, Kathleen F. F. Quiambao-Tomko, John R. R. Scully
Summary: The characterization of the oxide film formed on a corrosion-resistant multi-principal element alloy reveals a complex, layered structure with multiphase inner and outer oxide scales, as well as localized recrystallization in the base alloy. The outer oxide scale is dominated by two phases, while the inner oxide consists of a near surface spinel phase and Cr2O3 with metal inclusions. The high dislocation density on the sample surface affects the local recrystallization and elemental partitioning in the base alloy.
SCRIPTA MATERIALIA
(2022)
Article
Geology
Rick Verberne, Hugo W. van Schrojenstein Lantman, Steven M. Reddy, Matteo Alvaro, David Wallis, Denis Fougerouse, Antonio Langone, David W. Saxey, William D. A. Rickard
Summary: The migration of trace elements in rutile is investigated through the study of low-angle boundaries formed by dislocation creep in an omphacite vein. It is found that dislocation cores along these low-angle boundaries are enriched with various trace elements, including Fe and Ca. The role of dislocation microstructures as fast-diffusion pathways should be considered to avoid erroneous interpretations for Ca and Fe.
JOURNAL OF METAMORPHIC GEOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Tongming Cui, Xinhe Xu, Deng Pan, Jiarong Ma, Zhanpeng Lu, Junjie Chen, Xue Liang, Sergio Lozano-Perez, Tetsuo Shoji
Summary: The properties of oxide films grown on 308 L SS cladding with various surface treatments and temperatures in simulated PWR primary water were studied. It was found that the thickness of the inner oxide layer increased with the decrease of surface roughness, and the higher oxidation resistance of the ground surface was attributed to a thicker fine-grained layer near the surface. Additionally, the ferrite-affected oxidation zone expanded with increasing temperature.
JOURNAL OF NUCLEAR MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Brian J. Riley, Saehwa Chong, Jose Marcial, Nabajit Lahiri, Mrinal K. Bera, Sungsik Lee, Tianpin Wu, Karen Kruska, Josef Matyas
Summary: This study investigated thiolated and unthiolated Ag-Al-Si-O xerogels for iodine gas capture, with thiolated Ag0-xerogels showing one of the highest iodine-loading capacities reported to date in saturated conditions.
ACS APPLIED NANO MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Lili Liu, Karen Kruska, Gabriel B. Hall, Richard A. Clark, David E. Meier, Edgar C. Buck
Summary: Using rare earth elements as analogs, this study observed the particle attachment processes and different growth mechanisms of actinide oxalates through in-situ liquid cell TEM. This has important implications for particle evolution, predicting final particle morphology, and ultimately understanding actinide chemistry.
SCRIPTA MATERIALIA
(2022)
Article
Multidisciplinary Sciences
Fred Jourdan, Nicholas E. Timms, Tomoki Nakamura, William D. A. Rickard, Celia Mayers, Steven M. Reddy, David Saxey, Luke Daly, Phil A. Bland, Ela Eroglu, Denis Fougerouse
Summary: Rubble pile asteroids, made up of reassembled fragments, are more abundant than previously believed and can withstand bombardment in the solar system for extremely long periods. By analyzing samples from asteroid 25143 Itokawa, researchers found that the rubble pile structure formed at least 4.2 billion years ago and could provide valuable insights for developing strategies to prevent asteroid collisions with Earth.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2023)
Article
Multidisciplinary Sciences
Richard J. M. Taylor, Steven M. Reddy, David W. Saxey, William D. A. Rickard, Fengzai Tang, Caue S. Borlina, Roger R. Fu, Benjamin P. Weiss, Paul Bagot, Helen M. Williams, Richard J. Harrison
Summary: Researchers have discovered magnetite inclusions in zircon grains from the Jack Hills, which potentially carry a record of Earth's magnetic field dating back 4.2 billion years ago. The magnetite may be secondary in nature, suggesting a younger magnetic record than the zircon's crystallization age. The study reveals that the formation of secondary magnetite and the remobilization of lead and iron occurred after 3.4 billion years ago. This finding provides new opportunities to enhance our understanding of the Archean geodynamo. Rating: 9 out of 10.
Article
Geochemistry & Geophysics
M. J. Turuani, A. -M. Seydoux-Guillaume, A. T. Laurent, S. M. Reddy, S. L. Harley, D. Fougerouse, D. Saxey, S. Gouy, P. De Parseval, S. Reynaud, W. Rickard
Summary: Understanding the mass transfer mechanisms of radionuclides in monazite is crucial for its use as a geochronometer. This study investigates the mechanisms of Th and Pb mobility in monazite crystals through multiscale characterization. The results show the presence of linear Th-rich features and nanoscale clusters composed of radiogenic Pb within monazite lattice defects. The formation of these features is attributed to fluid ingress and radiation damage production. Nanophases containing Pb are also observed in all grains, suggesting a replacement mechanism of monazite through fluid interactions. This multiscale study provides new insights for interpreting geochronological information.
CONTRIBUTIONS TO MINERALOGY AND PETROLOGY
(2023)
Article
Materials Science, Multidisciplinary
Zhichao Shang, Xiaoping Cai, Farshid Pahlevani, Yan Zheng, Akbar Hojjati-Najafabadi, Xinran Gao, Baojing Zhang, Peizhong Feng
Summary: High porosity Co-Al-Fe intermetallics with 3D-microstructures were successfully synthesized in one step via a thermal explosion reaction. The link between pore structure and permeability was investigated using 3D-XRM technology. The corrosion resistance of the samples with different Fe contents was studied at 900 degrees C under an oxygen/sulphur atmosphere for up to 120 h. The results showed that the samples maintained stable pore structure and intact internal matrices, attributed to the formation of a thin protective layer on the surface. In addition, inward diffusion of S resulted in the formation of FeS nodules.
Article
Materials Science, Multidisciplinary
Lian Ma, Hain Yang, Daquan Zhang, Wei Wu
Summary: In this study, an environmentally friendly volatile corrosion inhibitor, lysine salts (LA), was prepared between graphene oxide (GO) layers using an in situ intercalation technique. The corrosion inhibition effect of LA was evaluated, and it was found that LA-GO2 achieved a 99.3% corrosion inhibition efficiency after composition optimization. The inhibition of the electrochemical anodic process on the surface of mild steel was the main reason for the high corrosion inhibition efficiency of LA-GO2. The properties of the surface film on the corroded steel were also characterized in detail to understand the corrosion inhibition mechanism of LA-GO2.
Article
Materials Science, Multidisciplinary
Running Wang, Jiaping Zhang, Bing Liu, Jie Fei, Qiangang Fu
Summary: By introducing a tailored SiC-C interphase, the carbon fiber can be effectively protected, improving the mechanical and ablation properties of leading edge shaped C/C-ZrC-SiC composites.
Article
Materials Science, Multidisciplinary
Zihua Wang, Chijia Wang, Ruitao Wang, Jiapeng Deng, Kun Zhang, Yanji Zhu, Huaiyuan Wang
Summary: A robust anti-corrosive coating has been developed using functional fly ash, which demonstrates excellent corrosion resistance and improved mechanical properties. The coating achieves these enhancements through molecular cross-linking design and surface augmentation techniques, resulting in a significantly improved impedance modulus compared to pure polyurea coatings.
Article
Materials Science, Multidisciplinary
Haofei Sun, Meifeng Li, Hao Zhang, Jing Liu
Summary: The oxidation behavior of FeCrNi medium entropy alloy was investigated through experimental observations and density functional theory (DFT) calculations. The study found that at 900 degrees C, the alloy forms a desirable and continuous oxide layer, while at 1000 degrees C, the oxide layer becomes discontinuous with penetration of oxide. These observations highlight the significant role of phase structure in promoting the formation of protective oxide scales and influencing oxidation resistance.
Article
Materials Science, Multidisciplinary
Yang Li, Ke Ma, Jingjun Xu, Jingjing Li, Yueming Li, Yi Zhang, Jun Zuo, Meishuan Li
Summary: Cr2AlC diffusion barrier effectively blocks the diffusion of Ti, enhancing the stability and spalling resistance of the Al2O3 scales between NiCrAlY coating and TiAl alloy.
Article
Materials Science, Multidisciplinary
Weiyi Wang, Qinglin Pan, Xiangdong Wang, Bing Liu
Summary: By adding Ce, Sc, Y and Zr elements to Al-Mg-Si alloy, the microstructure of the alloy can be regulated, and the corrosion and heat resistance of the materials can be improved.
Article
Materials Science, Multidisciplinary
Andrea Cristoforetti, Javier Izquierdo, Ricardo M. Souto, Flavio Deflorian, Michele Fedel, Stefano Rossi
Summary: This study presents a new approach to studying the mechanism of filiform corrosion in organic coated steel using the scanning vibrating electrode technique (SVET) and micropotentiometry (potentiometric SECM). The electrochemical activity under the coating was evaluated by mapping the ionic current densities coming from artificial defects made in specific locations of the filament. Antimony tips were also used to investigate the pH changes associated with different corrosion reactions at the metal-paint interface. Local pH levels along the filament in the anodic and cathodic regions were determined.
Article
Materials Science, Multidisciplinary
Yang Gao, Dayun Sun, Zhu Liu, Shuo Cong, Rui Tang, Yanping Huang, Lefu Zhang, Xianglong Guo
Summary: The corrosion characteristics of a novel alumina-forming austenitic steel in high-pressure high-temperature water environment were studied. The addition of aluminum has a negative effect on the continuity of the alumina scale.
Article
Materials Science, Multidisciplinary
Negin Madelat, Benny Wouters, Peter Visser, Zahra Jiryaeisharahi, Kristof Marcoen, Shoshan T. Abrahami, Annick Hubin, Herman Terryn, Tom Hauffman
Summary: This work explores the correlation between electrolyte transport properties and the variation of pigment volume concentration (PVC) in organic coatings. An odd random phase electrochemical impedance spectroscopy (ORP-EIS) approach is used to analyze the diffusion of ions independent from water uptake. The results show that a higher PVC leads to a more homogeneous coating structure, resulting in faster diffusion of ions and enhanced water uptake.
Article
Materials Science, Multidisciplinary
Eloa Lopes Maia, Serguei Gavrilov, Valentyn Tsisar, Kitty Baert, Iris De Graeve
Summary: The effect of pre-oxidation in air at 300-500°C on the initiation and development of liquid metal corrosion attack on 316L austenitic steel in static lead-bismuth eutectic (LBE) has been investigated. It was found that pre-formed oxide films can protect the surface against dissolution, while high temperature pre-oxidation leads to localized corrosion.
Article
Materials Science, Multidisciplinary
Baozhuang Sun, Qiuyu Wang, Yue Pan, Zhiyong Liu, Cuiwei Du, Xiaogang Li
Summary: In this study, a non-steady electrochemical model was established to investigate stress corrosion cracking (SCC). The model was verified using 304 SS with various microstructures, confirming its effectiveness in assessing SCC susceptibility.
Article
Materials Science, Multidisciplinary
Xingyu Xiao, Xinhua Liu, Zhilei Wang, Xuexu Xu, Mingying Chen, Jianxin Xie
Summary: The corrosion behavior and mechanisms of Cu-10Ni-X (Al, Fe, Mn, Cr, Sn, Ti, Zn) alloys in a 3.5% NaCl solution were systematically investigated. Both computational and experimental results revealed that except Ti, other elements could enhance the corrosion resistance of Cu2O passivation film.
Article
Materials Science, Multidisciplinary
Gen Zhang, Yan-Ping Huang, E. Jiang, Wei -Wei Liu, Hong Yang, Jing Xiong, Yong-Fu Zhao
Summary: The addition of aluminum has a significant influence on the intermetallic compounds in AFA alloys, particularly increasing the content of B2-NiAl phase. In the SCO2 environment, the oxide scales formed on AFA alloys with aluminum were thinner than on ASS without aluminum, and the structure of the oxide scales changed to a double-layer structure.
Article
Materials Science, Multidisciplinary
Yuxuan He, Guozheng Xiao, Chao Wang, Xuefeng Lu, Liuyuan Li, Shiying Liu, Yusheng Wu, Zhanjie Wang
Summary: The relationship between configurational entropy and lattice distortion in novel rare earth monosilicates was investigated, and the effect of configurational entropy on their properties was studied. The results showed that lattice distortion increased with the increase of configurational entropy, but a highly symmetrical crystal structure was formed when the configurational entropy was large enough, inhibiting the lattice distortion.
