Article
Materials Science, Multidisciplinary
Yujie Cui, Kenta Aoyagi, Yuichiro Koizumi, Cheng Yang, Huakang Bian, Yuichiro Hayasaka, Tadashi Fujieda, Akihiko Chiba
Summary: The addition of Nb significantly improves the oxidation resistance of Ti-based alloys without significantly affecting their tensile properties. This enhancement is mainly attributed to the substitution of Ti4+ by Nb5+ in TiO2 and the promotion of a Sn-rich layer formation.
Article
Materials Science, Multidisciplinary
Nathalie Ochoa, Enara Mardaras, Rodolfo Gonzalez-Martinez, Garikoitz Artola
Summary: The effect of microstructure on the corrosion resistance of four grades of cast irons was studied. The corrosion resistance increased in the order of grey < chunky < spheroidal < high silicon ductile cast iron. Graphite morphology governed the rate of galvanic corrosion, while the ferrous matrix controlled the formation of non-disrupted oxide layers. A pseudo-passive layer explained the lowest corrosion rate of the high silicon ductile cast iron.
Article
Energy & Fuels
Monica Sahoo, Shobhana Dey
Summary: The study compared the characteristics and combustion of two high ash non-coking coals, both rich in vitrinite, with moderate liptinite, and a relatively lower percentage of inertinite. The coals are rich in alumino-silicate minerals with moderate concentrations of Fe and Ti oxide, having crystalline forms susceptible for beneficiation. The coals exhibit fractionation characteristics suitable for utilization in thermal power plants, with BL coal showing potential for easy ignition and improved combustion characteristics compared to AH coal.
Article
Materials Science, Multidisciplinary
Chao Li, Xiaohu Yuan, Dingjun Li, Peng Song, Zulai Li, Taihong Huang, Jing Feng, Yang He, Ruixiong Zhai, Qing Li, Chen Hua, Wenlang Huang, Defeng Zhang, Jiansheng Lu
Summary: The oxidation behavior of thermal barrier coatings with a NiCoCrAlY bond coat at 1050 degrees C in different atmospheres was studied. It was found that water vapor contributes to fewer defects and lesser internal growth of Al2O3, and excess water vapor in the air + water vapor atmosphere suppresses local inward oxide growth. Water vapor also affects the grain growth of alumina.
Article
Chemistry, Physical
Galina Redkina, Alexandra S. Sergienko, Yurii Kuznetsov, Oleg Yu Grafov
Summary: This study investigates the composition, structure, protective, and hydrophobic properties of nanoscale films formed layer-by-layer on zinc surfaces using solutions of sodium dodecylphosphonate (SDDP) and vinyltrimethoxysilane or n-octyltriethoxysilane (OTES). The results show that the protective and hydrophobic properties of the films are influenced by the initial surface morphology, composition of the surface oxide layer, and the nature of inhibitors. Laser texturing of the zinc surface is found to be more effective in enhancing the anticorrosive properties of the films compared to chemical etching. The films formed on zinc surfaces with fractal morphology during layer-by-layer passivation with SDDP and OTES exhibit excellent superhydrophobic and protective properties in high humidity and salt spray atmospheres.
Article
Materials Science, Multidisciplinary
C. Nkoua, J. Esvan, B. Tribollet, R. Basseguy, C. Blanc
Summary: A combined EIS and XPS approach was used to investigate the corrosion behavior of 5083 Al alloy. It was found that the dissolution of Mg at the Mg-rich IMCs controlled the corrosion behavior, indicating that microstructures with high amount of Mg-rich IMCs were more susceptible to corrosion. The EIS experimental data showed good agreement with the fitted ones calculated using a model proposed for pure magnesium, and the XPS analysis revealed the double-layer structure of the passive films.
Article
Geochemistry & Geophysics
Sara Fiorentino, Tania Chinni, Dagmar Galuskova, Simone Mantellini, Alberta Silvestri, Amriddin E. Berdimuradov, Mariangela Vandini
Summary: The study examines a collection of glass artifacts from the citadel of Kafir Kala in Uzbekistan, identifying recurring degradation morphologies such as iridescence, opaque weathering, and blackening. The research aims to lay the groundwork for a systematic study approach dedicated to understanding the degradation patterns affecting archaeological glasses, highlighting the complex relationship between glass composition, burial environment, and degradation processes.
Article
Materials Science, Multidisciplinary
Yizhi Zhao, Lijun Peng, Haofeng Xie, Wenjing Zhang, Shuhui Huang, Zhen Yang, Zengde Li, Xujun Mi
Summary: The study investigated the effect of grain boundary engineering (GBE) on the erosion-corrosion resistance of 90/10 cupronickel alloys using a self-made erosion-corrosion device. A 90/10 cupronickel alloy with abundant low-sigma coincidence site lattice grain boundaries and random grain boundary disconnectivity was fabricated through GBE. The average corrosion rate of the self-prepared alloy was reduced by 34% to 0.0414 mm/a after the erosion-corrosion test. The corrosion product films of both samples included Cu, Cu2O, Ni(OH)2, NiO, FeO, FeOOH, and trace amounts of Cu2(OH)3Cl. A schematic diagram of the intergranular corrosion mechanism during the erosion-corrosion test was prepared.
Article
Materials Science, Multidisciplinary
Fidelma G. Di Lemma, Karen E. Wright, Luca Capriotti, Adam X. Zabriskie, Alexander J. Winston, Colby B. Jensen, Daniel M. Wachs
Summary: This study investigated the influence of a reactor overpower transient on irradiated metallic fuel performance and demonstrated that a moderate transient did not significantly affect fuel performance.
JOURNAL OF NUCLEAR MATERIALS
(2021)
Article
Materials Science, Ceramics
Alina Schramm, Rafal Nowak, Grzegorz Bruzda, Wojciech Polkowski, Olga Fabrichnaya, Christos G. Aneziris
Summary: This study investigates the wettability and interfacial reactivity of various ceramics (ZrO2, Al2O3, Al2O3-C, MgO, MgAlON) in contact with molten AZ91. The results show that MgAlON and Al2O3-C have low wettability, while the Al2O3- and ZrO2-containing ceramics undergo noticeable interface reactions with molten AZ91.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Article
Materials Science, Multidisciplinary
L. Prince, M-A. Rousseau, X. Noirfalise, L. Dangreau, L. B. Coelho, M. -G. Olivier
Summary: This study investigated the effect of carbonate ions on the corrosion protection of AZ31 magnesium alloy, highlighting the inhibitive effect of CO32- ions and discussing the underlying mechanisms. Multiple techniques including EIS, potentiodynamic polarization measurements, hydrogen evolution tests, SEM-EDX analysis, and XPS were used to analyze the corrosion behavior.
Article
Materials Science, Multidisciplinary
Yiming Jin, Carsten Blawert, Hong Yang, Bjoern Wiese, Jan Bohlen, Di Mei, Min Deng, Frank Feyerabend, Regine Willumeit
Summary: The corrosion resistance of Mg-0.5Zn deteriorated with the extension of solution treatment duration due to the formation of Fe-Si precipitates. Fe-Si precipitates, especially those with high Fe contents, significantly influenced the corrosion initiation and propagation. Directly extruded cast samples showed better corrosion performance compared to solution-treated and then extruded samples.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Mario Markic, Serkan Arat, Wolfram Fuerbeth
Summary: AC-induced corrosion poses a significant threat to cathodically protected pipelines, but the corrosion mechanisms are still unclear. Research in this study focused on investigating the surface processes of cathodically protected mild steel during AC polarization, demonstrating that the properties of the corrosion product layer are influenced by both AC interference parameters and the cathodic protection potential.
MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION
(2022)
Article
Biochemistry & Molecular Biology
M. Kravchik, G. Zolotenkova, Y. O. Grusha, Y. Pigolkin, E. Fettser, D. D. Zolotenkov, N. Gridina, L. Badyanova, A. A. Alexandrov, I. A. Novikov
Summary: In this study, energy-dispersive X-ray spectroscopy (EDS) was used to study the elemental composition of cadaver bone samples and evaluate the age evolution of bone chemical composition. The results showed an increase in the amount of Mg2+ cations in the bone apatite with age, indicating an age-related resorption rate. Additionally, the study found that the Ca weight fraction decreased with age, confirming age-dependent bone decalcification. This proposed method provides valuable insights into the trends of decalcification and changes in density and crystallinity of mineral bone matter.
Article
Nanoscience & Nanotechnology
N. Tan Luong, Noemie Veyret, Jean-Francois Boily
Summary: The variation in air humidity plays a crucial role in controlling water film coverages on reactive minerals, which in turn affects CO2 capture. This study focuses on the growth of amorphous magnesium carbonate on MgO nanocubes exposed to moist CO2 gas, shedding new light on the potential bottleneck for the efficient mineralization of CO2.
ACS APPLIED MATERIALS & INTERFACES
(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.