Article
Materials Science, Ceramics
Xiaojing Li, Shunhua Wang, Guixuan Wu, Dapeng Zhou, Jibin Pu, Miao Yu, Qiong Wang, Qinshuo Sun
Summary: This study investigated the oxidation and hot corrosion behaviors of Ti3SiC2, Ti2AlC, and Cr2AlC at 750 degrees C. Ti3SiC2 and Ti2AlC showed poor oxidation resistance but relatively better resistance to hot corrosion, while Cr2AlC exhibited the best oxidation resistance but inferior resistance to NaCl-induced hot corrosion.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Liangliang Lyu, Xi Qiu, Huifang Yue, Mingyang Zhou, Huiping Zhu
Summary: The corrosion behavior of Ti3SiC2 in liquid LBE was evaluated and a duplex corrosion structure was observed on the sample surfaces. The corrosion structure consisted of a diffusion layer and a stable protective oxide layer. The growth of the corrosion structure improved the microhardness and reduced the wettability, indicating the inhibition of further surface corrosion.
Article
Materials Science, Multidisciplinary
Huiping Zhu, Xudong Liu, Baochen Chang, Xiaobo Li, Muran Qi, Yifeng Wang, Fenglei Niu, Yan Ma, Liangliang Lyu
Summary: This study analyzed the surface corrosion behavior of two typical MAX phase materials, Ti3SiC2 and Ti3AlC2, in static LBE and found that Ti3SiC2 showed better corrosion resistance compared to Ti3AlC2, with a two-layer corrosion structure on Ti3SiC2 surfaces and a single layer on Ti3AlC2 surfaces.
MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION
(2022)
Article
Materials Science, Ceramics
Karthikeyan Ramachandran, Zuccarini Carmine, Katsumi Yoshida, Toru Tsunoura, Doni Daniel Jayaseelan
Summary: Commercially available Ti3SiC2 and Ti2AlC ceramics were investigated for their wet corrosion and mechanical behavior, with Ti2AlC showing higher oxidation resistance and formation of protective layers, while Ti3SiC2 exhibited decreased bending strength but higher tensile strength under hydrothermal conditions. Finite element analysis was used to validate the tensile strength results, and mathematical models were employed to study and compare the oxidation thickness for the ceramics. The models effectively validated the experimental results, showing the potential for predicting oxidation behavior in Ti3SiC2 ceramics.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Environmental Sciences
M. J. Moya-Llamas, M. G. Pacazocchi, A. Trapote
Summary: This research investigates the biokinetic behavior of bacterial species in an UASB-MBR system treating urban wastewater with emerging contaminants using respirometric techniques. The results show that a decrease in organic loading rate leads to the disintegration of floc structure, dispersed growth, and weak interfloccular bonds. However, no toxicity or inhibition caused by the presence of emerging contaminants is observed.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Nuclear Science & Technology
Xiao-Bo Li, Rui-Xian Liang, Yi-Feng Wang, Hui-Ping Zhu, Fang Liu, Yang Liu, Cong Li, Hao Wu, Feng-Lei Niu
Summary: In this study, a new transient calculation method was proposed to evaluate the ability of oxygen control in a non-isothermal lead-bismuth eutectic (LBE) loop. The method considers the dissolution process of PbO particles and the oxygen mass transfer process, and an optimized oxygen mass transfer coefficient was obtained. Numerical calculations and comparisons with experimental results from the CRAFT loop demonstrated the correctness and applicability of the optimized calculation method and the new oxygen mass transfer models to other LBE loops.
NUCLEAR SCIENCE AND TECHNIQUES
(2022)
Article
Chemistry, Physical
Longfei Song, Wenbin Hu, Xiaowen Zhang, Bokai Liao, Shan Wan, Lei Kang, Xingpeng Guo
Summary: This study investigates the influence of temperature on the corrosion behavior of AlCoCrFeNi2.1 eutectic high-entropy alloy in a chloride-containing sulfuric acid solution. The results show that the passive film of the alloy is stable at low temperatures but becomes unstable at high temperatures. The proportion of hydroxide and oxide in Fe and Cr changes with temperature, while Al and Ni are not significantly affected. The L12 phase exhibits good corrosion resistance at different temperatures, while pitting occurs on the B2 phase at low temperature.
Article
Chemistry, Physical
Jiping Zhao, Youlong Xu, Shiheng Liu, Xiangdong Ding
Summary: The adsorption of oxygen and water on the tantalum electrode surface significantly affects its corrosion behavior. Oxygen adsorption leads to passivation and decreases the corrosion rate, while water adsorption increases the corrosion rate. The formation of an oxygen monolayer on the tantalum surface inhibits corrosion, but water adsorption promotes dissolution.
APPLIED SURFACE SCIENCE
(2022)
Article
Electrochemistry
Mattia Parnigotto, Marco Mazzucato, Daniele Fabris, Lorenzo Dainese, Silvia Cazzanti, Nicola Bortolamei, Christian Durante
Summary: Linear sweep current and gas test methods can effectively evaluate the water consumption effect of flooded lead-acid batteries and predict abnormal water consumption behavior in plate batches.
Article
Materials Science, Multidisciplinary
Ko Ebina, Masashi Nishimoto, Izumi Muto, Yu Sugawara
Summary: Potentiostatic cathodic polarization was used to perform conversion treatment on sintered AA7075. The treatment resulted in the formation of a film made up of Mn-accumulated oxide and/or hydroxide on intermetallic particles containing Cu, specifically Al-Cu-Mg and Zn-Mg-Cu-Al particles, in 0.1 M MnSO4 solution. Potentiodynamic polarization in 0.1 M NaCl showed that the conversion films inhibited the oxygen reduction reaction on the particles. A dip-and-dry test using 0.1 M NaCl indicated that the conversion treatment improved the pitting corrosion resistance of AA7075. The effect of the film composition on the electrochemical properties of the particles and pitting corrosion resistance is discussed.
Article
Materials Science, Multidisciplinary
Carsten Schroer
Summary: The study analyzed the solution process of metallic alloy elements, focusing on the initial stage of dissolution in proportion to the alloy composition and subsequent selective leaching of elements. The characteristic features of the depletion zone for different formation mechanisms were identified, and comparisons were made with observations on steels and nickel-based alloys exposed to lead-based liquid alloys or liquid tin. The influence of dissolved oxygen and the formation of intermetallic compounds on this process were also addressed.
Article
Crystallography
Natasa Kovac, Spiro Ivosevic, Gyongyi Vastag, Peter Majeric, Rebeka Rudolf
Summary: This study investigates the corrosion process of alloys in terms of chemical changes in the surface compositions. Two NiTi Shape Memory Alloys obtained by different production processes were tested in different marine environments. Statistical analysis reveals the correlation between the corrosion depth and the percentage of oxygen in the sample surfaces, as well as the similarities and differences in the corrosive behavior of the two observed alloys.
Article
Metallurgy & Metallurgical Engineering
Sarah Moritz, Tobias Schwanekamp, Martin Reuber, Jonathan Lentz, Johannes Boes, Sebastian Weber
Summary: Preheated build platforms can reduce thermal stresses and crack formation in laser-based powder bed fusion of high carbon steels. The heat distribution during the process is affected by laser energy input and heat transfer. Depending on the preheating temperature and thermal conditions, in situ heat treatment effects can result in gradients in microstructures and properties. The study investigates these effects on AISI M2 high-speed steel and discusses the impact of temperature distribution on microstructure and hardness.
STEEL RESEARCH INTERNATIONAL
(2023)
Article
Chemistry, Physical
Yaotian Yan, Juqing Liu, Keke Huang, Junlei Qi, Liang Qiao, Xiaohang Zheng, Wei Cai
Summary: Electrocatalysis is crucial for the development of the hydrogen economy, and this study introduces a fast micro-nano liquid layer induced construction (MLC) strategy for synthesizing nanostructured electrocatalysts. The research shows that modulation of binary cations can improve charge accumulation around Fe sites, leading to balanced proton adsorption for HER and lower energy barrier for OER. This strategy not only enables scaled-up synthesis of nanostructured electrocatalysts, but also provides a platform for exploring more functional nanostructured compounds.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
Article
Materials Science, Coatings & Films
R. Kumar, H. Torres, S. Aydinyan, M. Antonov, M. Varga, I. Hussainova, M. Rodriguez Ripoll
Summary: Self-lubricating coatings were fabricated on a stainless steel substrate through laser cladding with metal sulfides. The coatings exhibited a self-lubricating behavior, reducing friction by -60% at room temperature and -40% at 400 degrees C, especially the Bi2S3-added cladding, due to the presence of lubricious phases and leading to 'self-healing' phenomena. The results were compared with the unmodified NiCrBSi alloy.
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Physics, Applied
R. Fetzer, W. An, A. Weisenburger, G. Mueller
LASER AND PARTICLE BEAMS
(2017)
Article
Engineering, Electrical & Electronic
Martin Sack, Georg Mueller
IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION
(2017)
Article
Materials Science, Multidisciplinary
A. Heinzel, A. Weisenburger, G. Mueller
MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION
(2017)
Article
Agricultural Engineering
Arthur Robin, Martin Sack, Alvaro Israel, Wolfgang Frey, Georg Mueller, Alexander Golberg
BIORESOURCE TECHNOLOGY
(2018)
Article
Physics, Fluids & Plasmas
Martin Hochberg, Martin Sack, Dennis Herzog, Alfons Weisenburger, Georg Mueller
IEEE TRANSACTIONS ON PLASMA SCIENCE
(2018)
Article
Chemistry, Applied
Mark Polikovsky, Francois Fernand, Martin Sack, Wolfgang Frey, Georg Mueller, Alexander Golberg
Article
Chemistry, Multidisciplinary
Arthur Robin, Meital Kazir, Martin Sack, Alvaro Israel, Wolfgang Frey, Georg Mueller, Yoav D. Livney, Alexander Golberg
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2018)
Article
Physics, Fluids & Plasmas
Martin Hochberg, Martin Sack, Dennis Herzog, Alfons Weisenburger, Wladimir An, Renate Fetzer, Georg Mueller
IEEE TRANSACTIONS ON PLASMA SCIENCE
(2019)
Article
Physics, Fluids & Plasmas
Renate Fetzer, Georg Mueller
IEEE TRANSACTIONS ON PLASMA SCIENCE
(2019)
Article
Physics, Fluids & Plasmas
Vladimir I. Engelko, Renate Fetzer, Konstantin Tkachenko, Kolja Shchegolikhin, Georg Mueller
IEEE TRANSACTIONS ON PLASMA SCIENCE
(2019)
Article
Agricultural Engineering
Debora Pez Jaeschke, Giovana Domeneghini Mercali, Ligia Damasceno Ferreira Marczak, Georg Mueller, Wolfgang Frey, Christian Gusbeth
BIORESOURCE TECHNOLOGY
(2019)
Article
Materials Science, Multidisciplinary
Hao Shi, Renate Fetzer, Chongchong Tang, Dorothee Vinga Szab, Sabine Schlabach, Annette Heinzel, Alfons Weisenburger, Adrian Jianu, Georg Mueller
Summary: The corrosion behavior of four different alumina-forming austenitic model alloys in oxygen containing molten Pb at 600 and 650 degrees C has been investigated. One composition with minor additions of Y and Nb and low Ni concentration shows corrosion resistance at 650 degrees C, where Y and Nb have a significant positive influence on the corrosion resistance and phase composition of the alloys.
Article
Nanoscience & Nanotechnology
Renate Fetzer, Alfons Weisenburger, Georg Mueller
Summary: The CORELLA facility allows corrosion erosion tests in molten lead alloys with controlled oxygen content and temperature under flowing conditions. The numerical study showed highly turbulent flow of liquid lead-bismuth eutectic, with significant impact on specimens' lateral surfaces at high rotational speeds.
Article
Instruments & Instrumentation
Wladimir An, Zhen Wang, Alfons Weisenburger, Georg Mueller
Summary: Laser-induced fluorescence-dip spectroscopy has been significantly modified by using a special broad band dye laser. The main advantage of this new method is the ability to obtain a complete image of the field distribution in a wide spatial area within one measurement.
REVIEW OF SCIENTIFIC INSTRUMENTS
(2022)
Proceedings Paper
Green & Sustainable Science & Technology
Alfons Weisenburger, Fabian Lang, Georg Mueller
INTERNATIONAL CONFERENCE ON CONCENTRATING SOLAR POWER AND CHEMICAL ENERGY SYSTEMS (SOLARPACES 2017)
(2018)
Article
Materials Science, Multidisciplinary
Liuming Wei, Jingwen Li, Yonggang Li, Qirong Zheng, Fan Cheng, Chuanguo Zhang, Jingyu Li, Gaofeng Zhao, Zhi Zeng
Summary: This study investigates the influence of He-V complexes on H behaviors on different W surfaces using DFT calculations. The results show that H dissolution is most difficult but H trapping is easiest on the W (110) surface, while the opposite is true on the W (111) surface. Moreover, the presence of He-V complexes increases the difficulty of H diffusion from bulk to surface and desorption.
JOURNAL OF NUCLEAR MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Yan Meng, Song Zeng, Chen Chen, Chaowen Zhu, Huahai Shen, Xiaosong Zhou, Xiaochun Han
Summary: The characteristics of magnetron sputtered Cr coatings vary with different temperature, bias voltage, and pressure. Coatings with random orientation, good crystallinity, and small grain size exhibit favorable oxidation behavior, while coatings with strong (200) texture, poor crystallinity, and large grains have many intrinsic defects that are detrimental to the protection property of the Cr coatings.
JOURNAL OF NUCLEAR MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Xinyuan Xu, Zefeng Yu, Wei-Ying Chen, Aiping Chen, Arthur Motta, Xing Wang
Summary: This study presents an automated approach for characterizing grain morphology in TEM images recorded during ion irradiation. By combining a machine learning model and a computer vision algorithm, comparable results to human analysis can be achieved with significantly reduced analysis time. Researchers can train their own models following the procedures described in this study to automate grain morphology analysis of their own TEM images.
JOURNAL OF NUCLEAR MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Shihao Wu, Dong Wang, Yapei Zhang, Koji Okamoto, Marco Pellegrini, Wenxi Tian, Suizheng Qiu, G. H. Su
Summary: The oxidation and degradation mechanisms of Cr coating on Zr alloy cladding under high temperature steam atmosphere are summarized, and a mathematical analysis model is established to predict the changes in coating thickness. The model is applied in the analysis of structure evolution under different conditions.
JOURNAL OF NUCLEAR MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
V. Diaz-Mena, J. de Prado, M. Roldan, I. Izaguirre, M. Sanchez, M. Rieth, A. Urena
Summary: The brazeability of a cupronickel alloy was evaluated as a filler alloy for high-temperature joining of tungsten to steel. The study investigated the brazing conditions and the impact of the selected filler on the joint quality using numerical software. The results showed different metallurgical interactions and diffusion phenomena between the filler alloy and the base materials at different temperatures. The study emphasized the importance of selecting a suitable filler to mitigate residual stresses in the joints.
JOURNAL OF NUCLEAR MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Pengcheng Zhu, Yajie Zhao, Yan-Ru Lin, Jean Henry, Steven J. Zinkle
Summary: This study investigates the effect of heavy-ion irradiation on radiation hardening in high-purity binary alloy Fe18Cr. Nanoindentation testing and high-quality TEM imaging were conducted to extract hardness and microstructure information. The strength factor was accurately calculated based on the detailed TEM characterization of irradiated microstructures, and a refined hardening superposition method was applied to quantify the mechanical properties of ion-irradiated materials.
JOURNAL OF NUCLEAR MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Bin Wu, Haixia Ning, Hanzhen Zhu, Jianjun Chen, Kang Wang, Daiyu Zhang, Fu Wang, Qilong Liao
Summary: This study discusses the effects of ZrO2 and B2O3 on the phase composition and properties of SAP-based glass-ceramics. The results show that ZrO2 addition improves the formation of NZP phase while restricting the crystallization of AlPO4 phases. The correct ratios of ZrO2 and B2O3 allow only the formation of NZP phase within the SAP glass.
JOURNAL OF NUCLEAR MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Hwasung Yeom, Greg Johnson, Benjamin Maier, Tyler Dabney, Kumar Sridharan
Summary: Cr-Nb bilayer coatings were developed using cold spray deposition to improve the limiting operational temperature of Cr-coated Zr-alloy system. The coatings exhibited outstanding oxidation resistance at high temperatures and formed continuous intermetallic compound layers at the interfaces.
JOURNAL OF NUCLEAR MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Padhraic L. Mulligan, Andrew T. Nelson, Chad M. Parish, Patrick A. Champlin, Xiang Chen, Daniel Morrall, Jason M. Harp
Summary: Environmental barrier coatings are being developed to reduce oxidation and embrittlement in Zr-based materials. Chromium nitride is a candidate for this application, but understanding its impact on irradiation-induced creep and microstructure is critical.
JOURNAL OF NUCLEAR MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Dexuan Yan, Xinlei Cao, Ke Shen
Summary: This study investigated the purification mechanism of polycrystalline graphite by comparing IG-11 graphite with IG-110 nuclear grade graphite. The analysis revealed that metallic impurities in IG-11 were primarily segregated within graphite porosities, while IG-110 demonstrated a significant reduction in impurities. This research contributes to the development of innovative graphite purification techniques for greater purity and stronger oxidation resistance.
JOURNAL OF NUCLEAR MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Wei Xu, Wei Peng, Lei Shi, Qi Sun
Summary: This paper investigates the oxidation and shape evolution of matrix graphite in high temperature gas-cooled reactors during air-ingress accidents. A reaction kinetics model is established and computational fluid dynamics with a dynamic mesh method is used to simulate the oxidation process. The results show that the geometric shape of graphite changes significantly with increasing flow rate, and the graphite pebbles tend to form a structure with a narrow front and wide tail.
JOURNAL OF NUCLEAR MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Allison Harward, Casey Elliott, Michael Shaltry, Krista Carlson, Tae-Sic Yoo, Guy Fredrickson, Michael Patterson, Michael F. Simpson
Summary: This paper investigates the hygroscopic properties of eutectic LiCl-KCl absorbed into zeolite-4A. The study finds that water absorption and corrosion worsen with increasing salt loading. It also suggests that the salt can be stored in a non-inert atmosphere for a certain period of time.
JOURNAL OF NUCLEAR MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Takaaki Koyanagi, Xunxiang Hu, Christian M. Petrie, Gyanender Singh, Caen Ang, Christian P. Deck, Weon-Ju Kim, Daejong Kim, James Braun, Yutai Katoh
Summary: This study provides critical experimental data on the effects of irradiation on the hermeticity of SiC composite cladding, finding that irradiation can cause a decrease in hermeticity and cracking, and coating the outer surface can mitigate the cracking issue.
JOURNAL OF NUCLEAR MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
S. Krat, A. Prishvitsyn, Yu. Gasparyan
Summary: This study proposes a probabilistic and diffusion-based model to describe the co-deposition of multiple hydrogen isotopes with slowly grown metal layers. The model calculates the relative concentrations of different hydrogen isotopes in the co-deposited metal layers. It is found that if hydrogen isotopes have different detrapping energies, only the isotope with the highest detrapping energy shows a monotonic decrease in concentration with deposition temperature. Furthermore, the study evaluates the uncertainty of tritium concentration in the co-deposited layer based on the uncertainty in detrapping energy of tritium and deuterium, predicting a >10% tritium concentration uncertainty for a 0.01 eV difference.
JOURNAL OF NUCLEAR MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Tijo Vazhappilly, Arup Kumar Pathak
Summary: This study investigates the effect of Ce atom substitution in UO2 on its thermophysical properties using density functional theory. The results show that the Ce substitution levels and the oxidation state of Ce/U atoms strongly influence the band structure and specific heat capacity of the UO2 lattice. These findings provide important insights into the fuel properties of UO2 under reactor conditions.
JOURNAL OF NUCLEAR MATERIALS
(2024)
