Article
Engineering, Chemical
Yujie Cui, Yufan Zhao, Haruko Numata, Kenta Yamanaka, Huakang Bian, Kenta Aoyagi, Akihiko Chiba
Summary: The research demonstrates that the limitation of reducing powder size by increasing the rotation electrode speed is mainly due to the increased probability of adjacent droplets recombining and the decreased tendency of granulation; the effects of additional Ar/He gas flowing on powder formation are determined by the cooling effect, the disturbance effect, and the inclined effect of the residual electrode end face.
Article
Materials Science, Multidisciplinary
Jie Li, Yunzhu Ma, Qingshan Cai, Wensheng Liu, Youteng Duan, Chaoping Liang
Summary: This study investigates the impact of oxygen content on the microstructure and mechanical properties of ultra-high strength steel. The results show that the size of oxide inclusions increases with higher oxygen content, and the composition of inclusions in particle boundaries changes from Al-rich to Si-rich oxide. Tensile strength remains stable at around 1300 MPa with oxygen content of 200 ppm to 650 ppm, but decreases to 1200 MPa at 1700 ppm. Impact toughness of the steel deteriorates as the oxygen content exceeds 365 ppm.
Article
Materials Science, Ceramics
Changshu Xiang, Xiaofeng Wang, Jun Yang, Hutian Li, Xiaopu Fan, Zhenghao Ge
Summary: In this study, high-quality 316H austenitic stainless steel powder was prepared by combining electroslag remelting and plasma-rotating electrode process. The properties of powders with different particle sizes, such as oxygen content, surface morphology, and flowability, were studied. The results showed that the powder had a bimodal particle size distribution and good flowability, making it suitable for 3D printing.
POWDER METALLURGY AND METAL CERAMICS
(2022)
Article
Metallurgy & Metallurgical Engineering
Zhenbo Zuo, Rui Hu, Xian Luo, Qingxiang Wang, Chenxi Li, Zhen Zhu, Jian Lan, Shujin Liang, Hongkui Tang, Kang Zhang
Summary: The characteristics and solidification behavior of Ti-48Al-3Nb-1.5Ta powder produced by SS-PREP (R) were analyzed. It was found that with the increase in particle size, the surface structure changed from smooth to dendritic morphology, and the flow ability improved. The powder was mainly composed of alpha(2) phase and gamma phase, and the content of gamma phase increased with the increase in particle size, leading to a decrease in hardness.
ACTA METALLURGICA SINICA-ENGLISH LETTERS
(2023)
Article
Materials Science, Multidisciplinary
Chen Liu, Shitong Wei, Shanping Lu
Summary: The corrosion behaviors of 9Cr-Si heat resistant steel deposited metals with different Si contents in oxygen-saturated static lead-bismuth eutectic at 550 degrees C were studied. The oxide scale was found to have a three-layer structure comprising of outer layer, inner layer, and inner oxidation zone (IOZ). The growth rate of the oxide scale decreased with increasing Si content in the steel. The oxidation mechanism of high Si 9Cr deposited metal was also discussed, highlighting the emergence, disappearance, and regeneration of IOZ during the corrosion process, as well as the division of the inner layer into two sublayers.
Article
Nanoscience & Nanotechnology
Gang Ruan, Chang Liu, Hongqiao Qu, Chuan Guo, Gan Li, Xinggang Li, Qiang Zhu
Summary: This paper compared the application of IN718 powders prepared by gas atomization (GA) and plasma rotating electrode process (PREP) in LPBF process. The results showed that the PREP powder had better flowability and processing window, and could achieve more stable mechanical properties compared to the GA powder.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Chemistry, Physical
Ahmad Raza, Camille Pauzon, Sophie Dubiez-Le Goff, Eduard Hryha
Summary: The atmosphere plays a crucial role in the degradation of powder during laser powder bed fusion, affecting spatter generation, thermal history, and oxidation. Understanding the relationship between atmosphere and spatter properties is essential for improving powder recyclability and process sustainability.
APPLIED SURFACE SCIENCE
(2023)
Review
Materials Science, Multidisciplinary
Hossein Sehhat, Jackson Chandler, Zane Yates
Summary: The plasma spheroidization process can enhance particle geometries of powders from various materials, particle size distributions, and initial particle geometries. The process parameters, such as powder feed rate, gas flow rates, and chamber pressure, have an impact on powder characteristics like particle size distribution, microstructure, and porosity. A tradeoff exists among process parameters, spheroidization ratio, and evaporation rate, affecting the overall spheroidization of particles.
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
(2022)
Article
Energy & Fuels
Jing Li, Jianguang Guo, Qing Sun, Xiangkun Nie, Linna Dai, Yu Wang, Lijie Ci
Summary: In this study, potassium ions were introduced to promote the crystalline transition in silicon monoxide, leading to improved cycling stability and initial Coulombic efficiency. Additionally, increasing the heating temperature was found to enhance the performance of the silicon monoxide anode.
Article
Nanoscience & Nanotechnology
Ming Li, Matthias Floetenmeyer, Ethan Bryant, Emily Cooper, Shiwei Tao, Ruth Knibbe
Summary: The sodium anode-free battery, which combines low cost and high energy density, is a promising alternative to lithium-ion batteries. However, the uncontrolled dendrite growth of sodium hinders its widespread adoption. This study provides insights into the nucleation and growth behavior of sodium deposition in ethylene carbonate and propylene carbonate through various characterization techniques.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Materials Science, Coatings & Films
Zhongli Han, Junqiang Lu, Chunyu Yin, Ping Lai, Wenhua Zhuang, Ling Li, Jiamei Wang, Lefu Zhang, Xianglong Guo
Summary: This study investigated the composition, microstructure, and phase evolution of 17-4PH stainless steel with a work-hardened layer in the low-temperature plasma nitriding process. The results showed that crack-like structures appeared with certain nitriding conditions, and the intensity of γ'-Fe4N phase increased with increasing nitriding temperature or time.
SURFACE & COATINGS TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Jaemin Yoo, Dongkyu Lee, Jimo Lee, Taehyeong Kim, Hyungyu Jin, Gunsu S. Yun
Summary: The study demonstrates the regeneration process of iron oxide catalysts using atmospheric pressure plasma technology, with hematite powder exposed to microwave-driven argon plasma being transformed into magnetite. The addition of hydrogen during the surface treatment process lowers the reduction temperature, and controlled experiments confirm the catalytic effect of the plasma on the chemical state of the hematite.
Article
Crystallography
Tomoyuki Homma, Takashi Washizu
Summary: The beta-type and sintered Ti-3.6Fe-5Zr-0.2B alloy was consolidated using spark plasma sintering and followed by a beta solution treatment. Modification of sintering conditions improved the tensile ductility by achieving 100% relative density. Water quenching resulted in the formation of alpha martensite phases, while air cooling suppressed their formation and instead precipitated bimodal alpha lath phases, resulting in higher strength and better ductility.
Article
Materials Science, Multidisciplinary
Weigang Yang, Mingao Li, Su Su, Shulong Xiao, Yuyong Chen
Summary: In this study, TiAl alloy powders with different carbon contents were produced by plasma rotating electrode process (PREP) and the effects of carbon addition on microstructural characteristics were investigated. The results show that carbon-containing TiAl powders have larger particle sizes and alpha phase is the predominant phase. Different cooling rates result in smooth, dendrite, and equiaxed microstructures in TiAl powders. With increasing carbon content, the average grain size of TiAl powders becomes smaller and the micro-hardness gradually increases.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Nanoscience & Nanotechnology
Rangasayee Kannan, Donovan N. Leonard, Peeyush Nandwana
Summary: Maraging steels exhibit high strength, toughness, and machinability, making them appealing to the tool and die industry. Additive manufacturing technologies like LPBF offer the potential for a new approach to designing maraging steel tools. This study focuses on optimizing the direct aging temperature for Ti-free Grade 300 maraging steel fabricated via LPBF and demonstrates that aging at 440 degrees Celsius for 6 hours results in the best strength-ductility combination.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
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)