Article
Materials Science, Multidisciplinary
Xin Cao, Zhengwei Zhang, Chunxiang Xu, Conglin Ren, Wenfu Yang, Jinshan Zhang
Summary: The Mg-2Y-1Zn-0.4Zr-0.3Sr alloy, a new degradable material for biomedical applications, underwent plastic extrusion deformation to improve corrosion resistance and mechanical properties. The alloy's grains were refined significantly, W-phase particles were distributed more evenly, and corrosion resistance and mechanical properties were enhanced.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Article
Materials Science, Multidisciplinary
Liang Wei, Wei -Min Qin, Jing-Yao Chen, Wen-Xin Lei, Jin-Yang Xi
Summary: The effect of phase structure and composition on the passive film properties and pitting behavior of L21-strengthened (CoCrFeNi)86Al7Ti7 high-entropy alloy (HEA) in 3.5 wt.% NaCl was investigated. The results showed that the bilayer amorphous passive film enriched in Cr- and Fe-oxides/hydroxides on (Fe, Cr)-rich FCC phase and that enriched in Ti and Ni-oxides on (Ni, Al, Ti)-rich L21 phase both contributed to the well pitting resistance. The microgalvanic corrosion effect between FCC phase (cathode) and L21 phase (anode) broke the passive film on L21 phase at the two-phase interface and resulted in pitting nucleation.
Article
Crystallography
Chenxu Li, Yuming Zhao, Jinhui Liu, Jilei Xu, Dong Guo, Huanghua Zhang, Xianghong Zhou, Peixu Yang, Shaojun Zhang
Summary: The corrosion behavior and resistance of WE43 and AZ80 immersed in NaCl and Na2SO4 solutions were studied. The alloys were subjected to immersion in 0.6 M NaCl and Na2SO4 solutions to observe corrosion morphologies. Corrosion rates were determined through hydrogen evolution and weight loss experiments. Electrochemical tests were conducted to analyze the corrosion situation in detail. The results showed that WE43 exhibited a unique micro-galvanic corrosion behavior when immersed in Na2SO4 solution. Furthermore, the corrosion rate of WE43 in Na2SO4 solution was significantly higher than that in NaCl solution, which was contrary to the behavior of AZ80 and most magnesium alloys. The protection provided by surface film may be the key factor behind these unexpected phenomena.
Article
Materials Science, Multidisciplinary
Wenjun Ci, Lili Deng, Xianhua Chen, Xu Dai, Li Feng, Chen Wen, Jingying Bai, Fusheng Pan
Summary: The effects of minor Gd addition on the microstructure, mechanical performance, and corrosion behavior of Mg-1Y alloys were studied. The addition of Gd decreased the hydrogen evolution rate of Mg-Y-Gd alloys, and transformed the active Mg24Y5 phase into the Mg5(GdY) phase. The high corrosion resistance of Mg-1Y0.6Gd alloy was attributed to the fine grain size, uniform distribution of surface potential, and the formation of protective corrosion passivation film rich in Gd2O3 and Y2O3.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Yong Cai, Hong Yan, Mingyu Zhu, Kai Zhang, Xuening Yi, Rongshi Chen
Summary: The study demonstrates that the high Gd content in alloys can enhance high-temperature oxidation resistance and corrosion resistance. The oxide film is composed of three layers with different compositions, showing improved performance with increasing Gd content.
Article
Materials Science, Multidisciplinary
Wenjun Ci, Xianhua Chen, Yue Sun, Xu Dai, Guanzheng Zhu, Di Zhao, Fusheng Pan
Summary: The study investigates the impact of different Zn concentrations on the microstructure, corrosion property, and mechanical property of Mg-0.3Sc-xZn alloys. MSZ1 alloy exhibits the highest corrosion resistance and appropriate mechanical properties. The corrosion resistance of Mg-0.3Sc-1Zn alloys is attributed to the homogeneous volta-potential distribution and dense corrosion product film.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Pan Yi, Dihao Chen, Menglin Li, Zhen Yang, Zhenggang Fang, Juan Mo, Kui Xiao, Chaofang Dong
Summary: This study investigated the influence of Nd on the corrosion behavior of a SAC305 alloy. The addition of Nd reduced the undercooling in the solidification process to 1.5-2.5 degrees Celsius. The corrosion resistance of the solder was significantly improved with Nd addition, evidenced by the decrease in potential difference between IMCs and Sn, the increase in passivation film thickness, and the greater proportion of SnO2 in the corrosion product layer in the pseudopassivation region. Specifically, the addition of 0.05 wt% Nd showed the most pronounced improvement effects.
Article
Materials Science, Coatings & Films
Vaithiyalingam Shutthanandan, Abraham Martinez, Tamas Varga, Arun Devaraj, Swadipta Roy, Elizabeth Stephens, Olga A. Marina, Suntharampillai Thevuthasan, Vijayakumar Murugesan, Vineet Joshi
Summary: Magnesium and its alloys are potential structural material candidates due to their high strength-to-weight ratio, but ductility and poor corrosion resistance limit industrial deployment. In order to understand the corrosion process, designing passivation layers and corrosion-resistant alloys is necessary. Experimental findings include the formation of magnesium chloride hydroxide hydrate and evidence of metastable ClO* radicals during aqueous salt corrosion processes.
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A
(2021)
Article
Metallurgy & Metallurgical Engineering
Shuai Zhang, Bao-Chang Liu, Mei-Xuan Li, Hui-Yuan Wang, Yin-Long Ma
Summary: The study investigated the impact of textures on different surfaces of an as-extruded Mg-4Al-1Sn-1Zn alloy sheet on its corrosion behavior. It was found that the surface perpendicular to the extrusion direction exhibited better corrosion resistance. The corrosion morphology was primarily influenced by the distribution of the second phase and fine-grained regions, while the corrosion rate was more closely related to the overall texture.
ACTA METALLURGICA SINICA-ENGLISH LETTERS
(2021)
Article
Electrochemistry
Vishwas Goel, David Montiel, Katsuyo Thornton
Summary: In this study, a phase-field model is used to investigate the corrosion behavior of Mg alloys. The effects of electrochemical properties, environment, and the spatial distribution of second phases are studied. Microstructure variations are also examined in 2D and 3D systems. The findings provide insights into the influence of two-phase microstructure on the corrosion behavior in a magnesium alloy.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2023)
Article
Electrochemistry
Kaihui Dong, Yingwei Song, Fuchun Chang, En-Hou Han
Summary: This study aims to investigate the variation of passive films on titanium and aluminum during galvanic corrosion, as well as their impact on corrosion rate. The results indicate that the passive film on cathode titanium alloy is transformed and the passive film on anode aluminum alloy degrades rapidly in the initial stage of galvanic corrosion. The cathodic reaction on anode aluminum alloy plays an important role in its high corrosion rate.
ELECTROCHIMICA ACTA
(2023)
Article
Electrochemistry
Yongsheng Chai, Junpeng Yan, Changhui Wang, Long Zhang, Mei Liang
Summary: In this paper, the micro-arc oxidation of 7075 aluminum alloy was simulated using COMSOL Multiphysics software to study the effects of temperature and thermal stress on micropores and cracks. The results show that the high temperature and high-pressure environment in the discharge channel lead to the eruption of molten oxide and the formation of irregular micropores on the oxide film surface. Cracks are formed due to thermal stress being larger than the tensile strength of the Al2O3 film layer, resulting in local plastic deformation or cracks. The temperature gradient near the discharge channel affects the size and shape of micropores, with larger gradients resulting in larger and more irregular micropores, and even bigger defects due to crack penetration. The crack region has a denser distribution of micropores due to its lower resistivity.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2023)
Article
Materials Science, Coatings & Films
Yuanyong Ouyang, Zhihao Chen, Chunyun Jiang, Wenzhong Yang, Yun Chen, Xiaoshuang Yin, Ying Liu
Summary: A double-layer composite coating was prepared on AZ31 Mg alloys, consisting of disorderly distributed nanofibers and PO43- groups; the coating exhibited high bonding strength and reduced corrosion rate, showing great potential in orthopedic applications.
SURFACE & COATINGS TECHNOLOGY
(2021)
Review
Metallurgy & Metallurgical Engineering
Feng Peng, Dongdong Zhang, Xuanyong Liu, Yu Zhang
Summary: Surface modification plays a critical role in improving the corrosion resistance of magnesium and its alloys, with superhydrophobic coatings inspired by nature serving as an effective protective method due to their water contact angle greater than 150 degrees. The review discusses the model and protection mechanism of superhydrophobic coatings, as well as methods for fabricating them on Mg alloys and functional coatings for enhanced performance. Challenges and future research directions in this field are also highlighted for potential advancements.
JOURNAL OF MAGNESIUM AND ALLOYS
(2021)
Article
Metallurgy & Metallurgical Engineering
Krishnamohan Thekkepat, Hyung-Seop Han, Ji-Won Choi, Seung-Cheol Lee, Eul Sik Yoon, Guangzhe Li, Hyun-Kwang Seok, Yu-Chan Kim, Jae-Hun Kim, Pil-Ryung Cha
Summary: This article presents a methodology to calculate the electrochemical potentials of intermetallic compounds and alloys, which can be used to predict and control the formation of galvanic cells and minimize corrosion. By tailoring the zinc composition in the Mg-3wt%Sr-xZn alloy, the galvanic corrosion is successfully minimized.
JOURNAL OF MAGNESIUM AND ALLOYS
(2022)
Article
Chemistry, Physical
Qi-Wen Chen, Ze-Qing Guo, Jian-Ping Zhou
Summary: Multifunctional continuous solid solutions NFMTO-x were successfully synthesized via a one-step hydrothermal method by controlling the ratio of Mg and Fe. The NFMTO-x materials exhibited enhanced visible light response, effective adsorption and photocatalytic degradation of organic pollutants, CO2 methanation capability, and easy recyclability due to their magnetic properties. This research provides a significant multifunctional material for water purification.
APPLIED SURFACE SCIENCE
(2024)
Review
Chemistry, Physical
George E. Stan, Maziar Montazerian, Adam Shearer, Bryan W. Stuart, Francesco Baino, John C. Mauro, Jose M. F. Ferreira
Summary: Bioactive glasses have the ability to form strong bonds with tissues and release therapeutic ions. However, their biomechanical compatibility limits their use in load-bearing applications. The use of magnetron sputtering technology to fabricate BG coatings shows promise in improving their efficacy and potential for application.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Zhaoxuan Wang, Zhicheng Yan, Zhigang Qi, Yu Feng, Qi Chen, Ziqi Song, Meng Huang, Peng Jia, Ki Buem Kim, Weimin Wang
Summary: The corrosion behavior of Fe-60 and Fe-83 ribbons in 0.6 M NaCl was studied. Fe-60 exhibited a local corrosion mode and formed a stable passivation film with higher corrosion resistance, while Fe-83 showed a combination of local and global corrosion modes and had lower corrosion resistance. Controlling the precipitation of nanocrystalline phases and increasing the POx content in the passivation film significantly improved the corrosion resistance of Fe-based glassy alloys.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Hao-Kai Peng, Sheng-Yen Zheng, Wei-Ning Kao, Ting-Chieh Lai, Kai-Sheun Lee, Yung- Hsien Wu
Summary: This study investigates the effects of high energy/fluence proton radiation on the performance of HfZrOx-based FeFETs memory with different Zr content. The results show that the characteristics of FeFETs are influenced by proton radiation, and the extent of the influence depends on the Zr content. FeFETs with 50% Zr content exhibit minimal changes in memory window and demonstrate good endurance and retention performance.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Zongyi Yue, Guangyi Wang, Zengguang Huang, Sihua Zhong
Summary: In this study, AZO and ITO films were successfully tuned as excellent passivation layers for c-Si surfaces, achieving effective minority carrier lifetime and outstanding optical properties through the optimization of annealing temperature and interfacial silicon oxide.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Martin Hruska, Jan Kejzlar, Jaroslav Otta, Premysl Fitl, Michal Novotny, Jakub Cizek, Oksana Melikhova, Matej Micusik, Peter Machata, Martin Vrnata
Summary: This paper presents a detailed study on the hydrogen sensing capabilities of highly nanoporous black gold films. The films exhibit fast response and recovery times at low temperatures. Different levels of nanoporosity were prepared and tested to investigate the sensing properties, and it was found that nanoporous black gold is suitable for hydrogen sensing. The sensitivity of the film depends on its nanoporosity.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yupu Wang, Gaofeng Teng, Chun To Yiu, Junyi Zhu
Summary: In the study of BM-SCO and HSCO thin films, it was found that H vacancies tend to prefer sites near the external surface or oxygen vacancy channels (OVCs), while H interstitials prefer sites of oxygen on a layer that contains six-fold coordinated Co. These findings not only enrich the understanding of complex surface phenomena of defect formation but also provide an explanation for the reversibility during phase transformation.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Jiafeng Lu, Linping Teng, Qinxiao Zhai, Chunhua Wang, Matthieu Lancry, Ye Dai, Xianglong Zeng
Summary: In this study, we achieved full control of fiber nanograting orientation by manipulating laser polarization, and tailored space variant fiber nanogratings, which expanded the diversity in fiber nanograting engineering.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yibo Liu, Yujie Tao, Yue Liu, Qi Sun, Qinrong Lin, Kexin Kang, Qinghua Zhang, Qingjie Sun
Summary: This study investigates the wettability of the Ti-Cu-Fe multi-metal system, specifically the wetting behaviors of CuSi3 droplets on TC4 and 304SS plates. The results show that the CO2 + Ar gas atmosphere significantly affects interfacial mass transfer, thus influencing the wettability of the systems.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Jimei Liu, Fei Wang, Rong Guo, Yuqi Liu, Mengyu Zhang, Jaka Sunarso, Dong Liu
Summary: This study developed Co/MXene composites with anti-corrosion properties by varying the cobalt content. These composites exhibited remarkable electromagnetic absorption performance and high resistance to corrosion under various corrosive conditions. The study also revealed the mechanism of electron transfer from cobalt to MXene and the electromagnetic dissipation behavior originated from polarization loss alone.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Moujie Huang, Yongsong Ma, Jingbo Yang, Lingyun Xu, Hangqi Yang, Miao Wang, Xin Ma, Xin Xia, Junhao Yang, Deli Wang, Chuang Peng
Summary: Strong metal-support interactions (SMSIs) are important for enhancing catalytic activities and stability in thermal catalysis. This study demonstrates a method to create SMSIs in electrocatalysis using carbon nanotubes and Ru nanoparticles, resulting in excellent catalytic activity and stability.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Ravi Trivedi, Brinti Mondal, Nandini Garg, Brahmananda Chakraborty
Summary: This study explores the potential of biphenylene as a nanocarrier for the delivery of the anticancer drug cisplatin. It is found that biphenylene offers physical stability, rapid release rate, solubility, and bio-compatibilities compared to other nanocarriers. The adsorption of cisplatin on the surface of biphenylene involves charge transfer from cisplatin to biphenylene. The drug is shown to be released at body temperature in an acidic environment. Biphenylene also exhibits excellent cytotoxicity activity and cellular uptake of the drug. Overall, biphenylene shows promise as a potential nanocarrier for cisplatin delivery.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Hyun Jeong, Hyeong Chan Suh, Ga Hyun Cho, Rafael Salas-Montiel, Hayoung Ko, Ki Kang Kim, Mun Seok Jeong
Summary: In this study, a potential platform to enhance Raman scattering and increase the number of observable Raman modes in monolayer transition metal dichalcogenides (TMDs) was proposed. The platform consisted of large-scale arrays of gold micropillars (MPs), which were able to enhance the Raman intensity of TMDs and make difficult-to-detect Raman modes observable. The platform showed great industrial advantages and wide applicability due to its low cost, simple process, large controllable area, and short process time.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yasir Abbas, Shafqat Ali, Sajjad Ali, Waqar Azeem, Zareen Zuhra, Haoliang Wang, Mohamed Bououdina, Zhenzhong Sun
Summary: In this study, FeOx@SPNO-C core-shell nanospheres as a catalyst for degradation of sulfamethoxazole (SMX) were successfully synthesized. The synergistic interaction between FeOx and SPNO-C, high carbon charge density, and the presence of C = O groups and N/Fe-Nx sites were found to be key factors for the enhanced degradation of SMX.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Qiaoting Yang, Yuxiao Gong, Yan Qian, Zhou-Qing Xiao, Serge Cosnier, Xue-Ji Zhang, Robert S. Marks, Dan Shan
Summary: This study proposes a hierarchical confinement strategy to design Prussian blue nanoparticles (PB NPs) with satisfactory electrocatalytic ability and stability. The catalytic synthesis of PB NPs is achieved through a hydrothermal process, and the as-prepared PB@NH2MIL exhibits efficient electronic transmission and enhanced electrocatalytic properties.
APPLIED SURFACE SCIENCE
(2024)