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
Materials Science, Multidisciplinary
Chao Liu, Le Qi, Tielong Shen, Hongpeng Zhang, Zhiwei Ma, Cunfeng Yao, Zhiguang Wang
Summary: In this study, we investigated the accelerated corrosion behavior of Fe-ion irradiated RAFM steel (SIMP) in high-temperature steam. We studied the thickness, elementary composition, surface morphology, crystal structure and micro-structure of the formed oxide films. The oxide films of the irradiated samples consisted of an outer layer of Fe3O4, a porous inner layer of Fe-Cr spinel, and an internal oxide zone composed of (Cr, Si)2O3, similar to the unirradiated sample. The thickness of the oxide films increased with the increasing displacement damage. The increase of corrosion rate of SIMP steel by displacement damage is rather moderate compared with austenitic steels.
Article
Materials Science, Multidisciplinary
R. P. Matthews, R. D. Knutsen, J. E. Westraadt, T. Couvant
Summary: The kinetics of oxide growth on 316L stainless steel was measured after exposing samples to different temperatures in a primary water environment. Contrary to expected behavior, the study found that oxide growth decreased as temperature increased. It is suggested that this phenomenon is linked to the degrading coherency across the metal/oxide interface.
Article
Materials Science, Multidisciplinary
Seunghyun Kim, Kangwoo Ahn, Gidong Kim, Sang -Woo Song
Summary: Chloride-induced stress corrosion cracking (CISCC) is a degradation phenomenon in austenitic stainless steels caused by Cl-containing media, residual stress, and materials susceptibility. In this study, synchrotron X-ray fluorescence imaging and electron microscopy were used to investigate the CISCC mechanism in austenitic stainless steel welds 304 LER308L and 316 L-ER316L. Specimens were exposed to 60 degrees C and 30% relative humidity conditions for 3 months, and their microstructure and chemistry were analyzed. Selective corrosion of 6-ferrite, which is composed of ferrite formers especially Cr and acts as a sink for impurities, leads to pitting corrosion and CISCC propagation.
Article
Materials Science, Multidisciplinary
Huiyun Tian, Zhongyu Cui, Heng Ma, Peilin Zhao, Maoxin Yan, Xin Wang, Hongzhi Cui
Summary: The effect of electrolyte presence form on the corrosion evolution and stress corrosion cracking (SCC) behavior of E690 steel in the simulated marine environment was investigated. The steel exhibited the highest corrosion rate in splash environment and the lowest corrosion rate in immersion environment due to differences in oxygen availability, rust layer property, and scour stress. γ-FeOOH dominated the rust formed in atmospheric environment, while Fe3O4 prevailed in the splash environment. The steel corroded in splash environment showed the most severe SCC degradation with high pit number density, high maximum pit depth, and high cathodic reaction activity.
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
Yi Yang, Moradi Masoumeh, Enze Zhou, Dan Liu, Yongbo Song, Dake Xu, Fuhui Wang, Jessica A. Smith
Summary: This study found that Streptococcus mutans can cause severe pitting corrosion of 316 L stainless steel in anaerobic environments with high sucrose, potentially impacting overall health negatively.
Article
Materials Science, Multidisciplinary
Leticia Cabrera-Correa, Leandro Gonzalez-Rovira, Juan de Dios Lopez-Castro, F. Javier Botana
Summary: Research on localized corrosion of Scalmalloy processed by SLM under certified conditions reveals correlation with intermetallic particles in the microstructure, showing two groups of pits with different repassivation behavior in all samples. Heat treatment does not affect pitting corrosion performance, but slightly increases intergranular corrosion susceptibility.
Article
Materials Science, Multidisciplinary
Shidong Wang, Lyndon Lamborn, Weixing Chen
Summary: This study found that the combined action of oxygen and primer layer under cyclic loading increases the corrosion severity but reduces the aspect ratio of the localized corrosion areas, leading to less tendency towards pit-to-crack transition compared to the primer-coated specimen in the absence of oxygen. Various factors affecting corrosion and crack initiation have been studied.
Article
Materials Science, Multidisciplinary
Y. Hong, D. D. Dong, G. P. Zou, Y. Li, S. S. Lin, T. C. Kuang, Y. Z. Wu, M. J. Dai
Summary: Plasma nitriding was conducted to enhance the strength and corrosion resistance of LAM 18Ni300 maraging steel. The nitrided surface showed a heterogeneous structure consisting of LAM dendrite boundaries and nanosized N-rich grains and associated N-depleted grains, which improve pitting resistance. The corrosion reaction on the nitrided surface is confirmed as gamma '/gamma + O -> MeO(N) + Me+, (Me = Fe, Co, Ni, Mo).
Article
Materials Science, Multidisciplinary
Farzin Arjmand, Zhengjie Zhao, Kaishu Guan, Lefu Zhang
Summary: The cathodic polarization and hydrogen absorption of solution/mill annealed Alloy 600 samples in acidic solution and high-temperature water were investigated. The results show that hydrogen absorption reduces the solubility of the alloy and increases its mechanical strength. In addition, hydrogen charging increases the thickness of the oxide layer and modifies the composition of the oxides.
Article
Materials Science, Multidisciplinary
Ee Li, Jiajia Wu, Dun Zhang, Peng Wang, Yu Wang, Ming Xu, Ce Li, Zhihua Sun, Liyang Zhu
Summary: D-phenylalanine has been shown to prevent localized corrosion on Q235 carbon steel by inhibiting biofilm formation and altering biofilm structure when lactate is the main electron donor. When lactate and yeast extract are removed, D-Phe significantly reduces overall corrosion loss, likely due to its involvement in the Stickland reaction involving L-cysteine and bacteria-transformed L-phenylalanine.
Article
Materials Science, Multidisciplinary
Ce Li, Jiajia Wu, Dun Zhang, Peng Wang, Zhihua Sun, Liyang Zhu, Yaohua Gao, Yi Wan, Zhiqing Yang, Yu Wang, Ee Li
Summary: This study investigated the microbiologically influenced corrosion of metals exposed to marine tidal zone, specifically the corrosion of EH40 steel affected by Halomonas titanicae under alternate and full immersion. The transition from full immersion to alternate pattern was found to accelerate corrosion in abiotic media, but enhanced the corrosion inhibition efficiency of H. titanicae towards steel. These differences were attributed to thin electrolyte layers, increased number of sessile cells, and their possibly enhanced aerobic respiration activity during alternate immersion.
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
Wei Zhang, Bruce Brown, David Young, Gheorghe Bota, Srdjan Nesic, Marc Singer
Summary: The parametric study identified specific conditions that lead to corrosion of mild steel in marginally sour environments, including temperature, H2S pH, solution pH, and sodium chloride concentration. Transmission electron microscopy revealed a porous layer containing mackinawite and magnetite, with corrosion initiating when the mackinawite layer broke down and exposing the steel surface to corrosive substances, leading to propagation of corrosion due to galvanic coupling.
Article
Agricultural Engineering
Yeqing Li, Zhenxin Wang, Zhuoliang Jiang, Lu Feng, Junting Pan, Mingyu Zhu, Chengjie Ma, Zhangmu Jing, Hao Jiang, Hongjun Zhou, Hui Sun, Hongbin Liu
Summary: This study found that biochar and hydrochar can increase methane production, but there was no significant difference in methane yield between biochar and hydrochar produced at different temperatures. The analysis of 16S rRNA gene sequencing and surface properties characterization revealed that bio-based carbon materials enriched microorganisms involved in direct interspecies electron transfer, providing a stable environment for DIET.
BIORESOURCE TECHNOLOGY
(2022)
Article
Infectious Diseases
Li Li, Cheng-Jie Ma, Yu-Fei Chang, Si-Yuan Yang, Yun-Xia Tang, Ling-Hang Wang
Summary: This study describes the epidemiological and clinical characteristics of imported COVID-19 cases in Beijing and assesses the effectiveness of screening strategies. The combination of RT-PCR and chest CT is found to be an effective strategy for screening imported cases.
BMC INFECTIOUS DISEASES
(2022)
Article
Immunology
Li Li, Xing-Wang Li, Cheng-Jie Ma, Ling-Hang Wang, Feng-Ting Yu, Si-Yuan Yang, Shu-Jing Song, Yun-Xia Tang
Summary: This study found that HIV-infected MSM exhibit signs of accelerated immune senescence and biological aging, particularly affecting CD8 T-cell subsets.
CURRENT HIV RESEARCH
(2022)
Article
Engineering, Mechanical
Yuxin Li, Yixin Yang, Jinhao Nie, Peikang Bai, Zhiguo Liang, Shouzheng Wei, Jie Cai, Qingfeng Guan
Summary: NiCoCrAlY coatings prepared using laser cladding technology were subjected to a continuous hot corrosion test in a eutectic Na2SO4/NaCl salt at 800 degrees C. The results showed that a chemical reaction occurred at the salt/coating interface during the corrosion process, leading to the formation of a continuous Al2O3 film.
ENGINEERING FAILURE ANALYSIS
(2022)
Article
Materials Science, Textiles
Jackie Y. Cai, Jie Min, Jill McDonnell, Lijing Wang, Robert Knott
Summary: Gamma irradiation was applied to vertically aligned carbon nanotube (CNT) forests to improve the interfacial adhesion and then spun into CNT yarns. The yarns spun from the irradiated forests showed higher tensile strength and lower breaking elongation. Increasing spinning tension improved the strength of both the irradiated and unirradiated yarns, but the irradiated yarns had more significant improvements. The relative improvements in yarn tenacity ranged from 14% to 26% under various spinning tensions.
JOURNAL OF INDUSTRIAL TEXTILES
(2022)
Article
Materials Science, Ceramics
Yingxin Li, Wei Qian, Yinqun Hua, Yunxia Ye, Fengze Dai, Jie Cai
Summary: In this paper, (Y3-xYbx)(Al5-xScx)O12 thermal barrier coating materials were synthesized and their thermal properties were significantly improved by doping Yb and Sc. Among them, (Y2.8Yb0.2)(Al4.8Sc0.2)O12 showed the lowest thermal conductivity and the highest thermal expansion coefficient. Additionally, YS-YAG exhibited excellent corrosion resistance to CMAS. It is considered to be a prospective material for thermal barrier coatings.
CERAMICS INTERNATIONAL
(2023)
Article
Instruments & Instrumentation
Nana Tian, Xuesu Ji, Conglin Zhang, Peng Lv, Jintong Guan, Jie Cai, Qingfeng Guan
Summary: This paper investigates the effects of high-current pulsed electron beam (HCPEB) pretreatment on the bonding quality and interface strength of Cu and 316L stainless steel. The results show that HCPEB irradiation transforms the initial coarse grains into fine grains with abundant crystal defects, which enhances the diffusion of atoms and the bonding at the interface.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
(2022)
Article
Materials Science, Coatings & Films
Kun Huo, Zhichen Guan, Jie Cai, Yunxia Ye, Yinqun Hua, Fengze Dai
Summary: YSZ coatings treated by laser micro glazing showed improved corrosion resistance and the formation of a sintered layer as a second barrier.
SURFACE & COATINGS TECHNOLOGY
(2022)
Article
Medicine, Research & Experimental
Xue Ding, Pengfei Meng, Xiuxia Ma, Weifeng Cui, Liangping Li, Xiyuan Song, Jiangrong Wang, Chengjie Ma, Xin Chen, Liran Xu
Summary: This study aims to assess the efficacy and safety of traditional Chinese medicine (TCM) for patients with AIDS, explore its potential underlying mechanism, and provide reference for delaying the onset and controlling the progression of HIV/AIDS.
Article
Chemistry, Physical
Y. M. Yao, J. Cai, J. Gao, Q. F. Guan, P. Lyu, Y. Q. Hua, Y. . X. Ye, W. Xue
Summary: NiCoCrAlYSiHf coatings were modified using high-current pulsed electron beam technique, resulting in coatings with superior thermal cycling behavior.
APPLIED SURFACE SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Changyu Wang, Kaiyu Luo, Jie Cai, Jinzhong Lu
Summary: The effects of laser shock peening (LSP) on the electrochemical and long-term immersion corrosion behaviors of AISI 420 martensitic stainless steel in a 3.5 wt% NaCl solution were studied. The results showed that LSP treatment significantly improved the corrosion resistance of the steel, with a decrease in passive current density and an increase in pitting potential. The LSP treatment also resulted in the formation of a Cr-rich passive film with better corrosion resistance, and the inhibitory effects of nanocrystalline structure and compressive residual stress effectively prevented rust formation even after 30 days of immersion.
Article
Chemistry, Multidisciplinary
Dulini Fernando, Motilal Mathesh, Jackie Cai, Wenrong Yang
Summary: A facile polymer-directed metal-organic framework (MOF)-based nanoarchitechtonics was developed to enhance the catalytic efficiency of multi-enzyme cascade reactions through substrate channeling. The new method involved the simultaneous synthesis of MOF and co-immobilization of enzymes, resulting in a closely packed nanoarchitecture with enhanced substrate channeling. The enzyme cascade reaction system showed a 3.5-fold increase in catalytic activity compared to free enzymes.
Review
Medicine, Research & Experimental
Chen Yu, Yongjun Du, Zhi Peng, Chengjie Ma, Junhua Fang, Langtao Ma, Fei Chen, Chaoqun Zhang, Ruizhi Geng, Yangyang Zhang, Xi Han, Jiayi Li, Yan Lv, Sheng Lu
Summary: Osteosarcopenia is a common geriatric syndrome characterized by reduced skeletal muscle mass and bone mineral density, leading to decreased physical performance and increased risk of falls and fractures in older individuals. Due to global population aging, the prevalence of osteosarcopenia is expected to continue to rise. Studying the pathogenesis and treatment of osteosarcopenia is crucial for improving patient's quality of life.
EXPERIMENTAL AND THERAPEUTIC MEDICINE
(2023)
Article
Engineering, Mechanical
Zhao Wang, Wanting Zhou, Kaiyu Luo, Haifei Lu, Jinzhong Lu
Summary: The role of laser shock peening (LSP) on the thermomechanical fatigue properties of Ti6Al4V titanium alloy was studied. The effects of LSP with different coverage layers on the microstructural evolution, residual stresses distribution, and thermomechanical fatigue lives were analyzed. Results showed significant improvement in thermomechanical fatigue lives and changes in crack initiation locations and fracture surface features. LSP-induced plastic deformation, residual stresses, and grain refinement were identified as key factors contributing to the improved thermomechanical fatigue properties.
INTERNATIONAL JOURNAL OF FATIGUE
(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.
