Article
Materials Science, Multidisciplinary
Xin Zhao, Zhigang Wang, Jinjuan Lv, Xiao Liu, Lei Zheng, Jiantao Liu
Summary: The isothermal oxidation kinetics of a fourth-generation powder metallurgy FGH4108 nickel based superalloy were investigated at temperatures ranging from 800°C to 1100°C. It was found that the oxidation kinetics of the FGH4108 superalloy followed a parabolic law at 800°C and 900°C, and a cubic law at 1000°C. At 1100°C, the oxidation kinetics had two distinct parts: one following a parabolic law and the other obeying a linear law. The results showed that the oxidation behavior of the FGH4108 superalloy at high temperatures was controlled by the diffusion of Cr, Al, Ti, and O. Based on the oxidation resistance, the long-term service temperature of the FGH4108 superalloy should not exceed 1000°C.
Article
Chemistry, Physical
You Wu, Haozhi Zhao, Jikang Li, Yuanyuan Zhang, Jiantao Liu, Tong Liu
Summary: A new heat treatment processing, high temperature pre-precipitation treatment (HTPT), has been developed to achieve serrated grain boundaries and fine gamma' precipitates in powder metallurgy nickel-based superalloys. The effects of HTPT conditions on the microstructure have been systematically characterized.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Engineering, Manufacturing
Etienne Martin, Arunkumar Natarajan, Srikanth Kottilingam, Rasim Batmaz
Summary: This study examines the advantages and disadvantages of using BJAM to produce high gamma' Ni-based superalloys. During the sintering process, the formation of HfO2 and Ta-rich carbides along prior particle boundaries was observed, impacting the mechanical properties of the material.
ADDITIVE MANUFACTURING
(2021)
Article
Chemistry, Physical
Chengtao Yu, Yu Zhen, Jing Zhao, Qunchang Wang, Jinlong Wang, Minghui Chen, Fuhui Wang
Summary: A Ni-based superalloy composite (FTSC) was successfully prepared by spark plasma sintering with Ti3SiC2 (15 vol %) and FGH97 alloy powders as precursors. During sintering, the weakly bonded Si layers de-intercalate from Ti3SiC2 and the remaining TiC is eroded by the elements of the matrix, which promoted in-situ precipitation of MC and M6C carbides. The Zener pinning effect of ultra-fine duplex carbides results in refinement of alloy grains and notably improvement in mechanical strength. Comparing to the alloy FGH97, the composite FTSC possesses 55% higher microhardness, 100% higher compressive yield strength and 92% higher flexural strength. The refined grains ensured fast formation of a protective alumina scale at surface, which provides high oxidation resistance for the composite.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Olivia Stanners, James Russell, Sean John, Helen M. Davies, Silvia Marchisio
Summary: Novel joining method PIB uses a powder interlayer and a localized temperature gradient to produce a joined workpiece with reduced HAZ and energy requirements. It shows potential to join dissimilar nickel-based superalloys with minimal porosity.
Article
Materials Science, Multidisciplinary
Chengtao Yu, Qunchang Wang, Minghui Chen, Fuhui Wang
Summary: FGH 97 alloy and its composite with TiC addition were prepared by spark plasma sintering. TiC particles were dissolved into the alloy matrix during ball milling, but precipitated out in-situ as MC solid solution with semi-coherent interface after sintering, resulting in a homogeneous and fine microstructure. After exposure to 900 degrees C for 300 h, the grain size only grew by 31%. The fine microstructure promoted selective oxidation of Al and ensured high oxidation resistance of the composite FT. The precipitated carbides increased oxidation resistance of FT and endowed its oxide scale with self-healing ability for long-term oxidation.
Article
Chemistry, Physical
J. M. Bai, H. P. Zhang, X. Y. Li, J. T. Liu, Q. S. Sun, C. S. Liu, Y. W. Zhang
Summary: This study conducted creep rupture tests on powder metallurgy superalloys with various Ta additives to further understand the effect of Ta on creep damage. The results showed that multiple crack propagation and damage mechanisms could occur under the same creep condition, and the addition of Ta could alter the size of these different fracture mode areas. However, the effects of Ta changed significantly under different creep conditions.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Feng Liu, Zexin Wang, Liming Tan, Xiangyou Xiao, Yunping Li, Xia Li, Hua Zhang, Lilong Zhu, Liang Jiang, Yong Liu
Summary: In this study, the high temperature creep properties of three newly developed P/M superalloys with fine grains were investigated under different temperature and stress conditions. The results showed that cracks were more likely to initiate at grain boundaries, and the movement of dislocations in grains was influenced by testing conditions.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Qingshuang Ma, Xintong Li, Ruifeng Xin, Enyu Liu, Qiuzhi Gao, Linlin Sun, Xuming Zhang, Chengxian Zhang
Summary: This study utilizes phase diagram and machine learning techniques to calculate thermodynamic parameters and design alloys for the fourth-generation nickel-based powder superalloys, resulting in the creation of new alloys that meet performance requirements.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Weiqi Li, Xinbao Zhao, Yuan Cheng, Quanzhao Yue, Wanshun Xia, Yuefeng Gu, Ze Zhang
Summary: The increase of Mo content in fourth-generation nickel-based single crystal superalloys affects the oxidation behavior, leading to increased growth stress of the oxide layer and severe spalling.
Article
Chemistry, Physical
Bing Sun, Tiebang Zhang, Lin Song, Lei Zhang
Summary: This study investigates the oxidation behavior and its effect on the tensile properties of a powder metallurgy superalloy, EP962NP. The results demonstrate that the oxidation resistance of the alloy is improved by hot isostatic pressing. The oxidation process is limited by the diffusion of Cr3+ due to an activation energy of 244.1 kJ·mol-1. Moreover, cracking and spalling during steady-state oxidation are mainly attributed to the rapid increase in growth stress caused by spinel. Interestingly, the tensile samples oxidized at 900 degrees C exhibit improved plasticity due to the refinement of gamma' caused by octet splitting.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Metallurgy & Metallurgical Engineering
Jun-sheng Meng, Ming-xuan Chen, Xiao-ping Shi, Qiang Ma
Summary: The addition of Co to nickel-based superalloys with partial replacement of W promoted the formation of chromia scale and decreased the oxidation rate, while also enhancing the adhesion of Al2O3 scale and improving hot corrosion resistance under molten Na2SO4-NaCl salts.
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
(2021)
Article
Materials Science, Characterization & Testing
Yada Polsen, Panyawat Wangyao, Nutthita Chuankrerkkul, Patama Visuttipitukul, Ruangdaj Tongsri, Gobboon Lothongkum
Summary: The experiment revealed that the P/M 316 L stainless steel specimen with 5% Cr addition exhibited the best oxidation resistance, with the main oxidation products identified as Cr2O3, Fe2O3, (Fe0.6Cr0.4)(2)O-3, NiFe2O4 and NiCr2O4 under all tested conditions.
Article
Chemistry, Physical
Yigit Garip
Summary: This study investigates the effects of alloying elements on the microstructure and oxidation performance of high entropy alloys. It was found that the addition of Si improves the oxidation resistance, while Cu addition increases the thickness of the oxide scale. The alloying elements do not have a favorable effect on relieving internal oxidation.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Yigit Garip
Summary: This study investigated the effects of alloying elements on the microstructure and oxidation performance of high entropy alloys, revealing that Si addition can enhance oxidation resistance, while Cu addition leads to thickening of the oxide scale and increased mass change. Si addition increases the amount of Ni-rich oxide in the oxide scale, and Cu addition results in a specific structure of the oxide scale in Cu-added and Si-Cu co-added HEAs.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
M. R. Chellali, S. H. Nandam, S. Li, M. H. Fawey, E. Moreno-Pineda, L. Velasco, T. Boll, L. Pastewka, R. Kruk, P. Gumbsch, H. Hahn
Article
Nanoscience & Nanotechnology
Chaomin Wang, Xiaoke Mu, Mohammed Reda Chellali, Askar Kilmametov, Yulia Ivanisenko, Herbert Gleiter, Horst Hahn
SCRIPTA MATERIALIA
(2019)
Article
Chemistry, Multidisciplinary
Abhishek Sarkar, Qingsong Wang, Alexander Schiele, Mohammed Reda Chellali, Subramshu S. Bhattacharya, Di Wang, Torsten Brezesinski, Horst Hahn, Leonardo Velasco, Ben Breitung
ADVANCED MATERIALS
(2019)
Article
Physics, Condensed Matter
Abbes Beloufa, Benaoumeur Bakhti, Driss Bouguenna, Mohammed Reda Chellali
PHYSICA B-CONDENSED MATTER
(2019)
Article
Chemistry, Multidisciplinary
Concepcion Molina-Jiron, Mohammed Reda Chellali, C. N. Shyam Kumar, Christian Kuebel, Leonardo Velasco, Horst Hahn, Eufemio Moreno-Pineda, Mario Ruben
Article
Nanoscience & Nanotechnology
Mohammed Reda Chellali, Abhishek Sarkar, Sree Harsha Nandam, Subramshu S. Bhattacharya, Ben Breitung, Horst Hahn, Leonardo Velasco
SCRIPTA MATERIALIA
(2019)
Article
Chemistry, Physical
Shiv Prakash Singh, Mohammed Reda Chellali, Leonardo Velasco, Yulia Ivanisenko, Evgeniy Boltynjuk, Herbert Gleiter, Horst Hahn
JOURNAL OF ALLOYS AND COMPOUNDS
(2020)
Article
Materials Science, Multidisciplinary
Sree Harsha Nandam, Omar Adjaoud, Ruth Schwaiger, Yulia Ivanisenko, Mohammed Reda Chellali, Di Wang, Karsten Albe, Horst Hahn
Article
Multidisciplinary Sciences
Xinglong Ye, Harish K. Singh, Hongbin Zhang, Holger Gesswein, Mohammed Reda Chellali, Ralf Witte, Alan Molinari, Konstantin Skokov, Oliver Gutfleisch, Horst Hahn, Robert Kruk
NATURE COMMUNICATIONS
(2020)
Article
Chemistry, Multidisciplinary
Xinglong Ye, Fengkai Yan, Lukas Schaefer, Di Wang, Holger Gesswein, Wu Wang, Mohammed Reda Chellali, Leigh T. Stephenson, Konstantin Skokov, Oliver Gutfleisch, Dierk Raabe, Horst Hahn, Baptiste Gault, Robert Kruk
Summary: Hydrogen atoms play a critical role in permanent magnets, and engineering grain boundaries can achieve the giant magnetoelectric effect in these magnets.
ADVANCED MATERIALS
(2021)
Article
Physics, Multidisciplinary
M. R. Chellali, S. H. Nandam, H. Hahn
PHYSICAL REVIEW LETTERS
(2020)
Article
Nanoscience & Nanotechnology
Ananya Baksi, Sree Harsha Nandam, Di Wang, Robert Kruk, Mohammed Reda Chellali, Julia Ivanisenko, Isabella Gallino, Horst Hahn, Soumabha Bag
ACS APPLIED NANO MATERIALS
(2020)
Article
Chemistry, Multidisciplinary
Soumabha Bag, Ananya Baksi, Di Wang, Robert Kruk, Cahit Benel, Mohammed Reda Chellali, Horst Hahn
NANOSCALE ADVANCES
(2019)
Article
Materials Science, Multidisciplinary
Joel A. Bahena, J. Sebastian Riano, Mohammed R. Chellali, Torben Boll, Andrea M. Hodge
Article
Chemistry, Physical
Alexander Benes, Alan Molinari, Ralf Witte, Robert Kruk, Joachim Broetz, Reda Chellali, Horst Hahn, Oliver Clemens
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)
