Article
Materials Science, Coatings & Films
H. S. Maharana, K. Mondal
Summary: This study successfully developed pure Ni and Ni-MoS2 bulk nano-crystalline electrodeposited coatings and analyzed their mechanical and wear behavior. The crystallite size of Ni in Ni-MoS2 coatings varied with different loading levels of MoS2, showing an inverse Hall-Petch relation in hardness values. The wear resistance of Ni-MoS2 coatings was significantly improved compared to pure Ni electrodeposit, possibly due to the higher hardness caused by dispersion hardening. The wear behavior of the Ni-MoS2 coatings was correlated with crystal orientation, coating morphology and hardness to establish a possible abrasive wear mechanism.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Alan F. Jankowski
Summary: Various synthesis methods in phase space for nanostructure production in metals are explored, with rapid solidification condensation methods and pulsed current electrodeposition being emphasized. An analysis approach linking energy in deposition pulses to constituent grain size is applied to refine nanocrystalline coatings, with current research focusing on nickel foils. Mechanical behaviors such as hardness and rate-sensitivity of strength are evaluated in relation to grain size.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
G. Kaneyama, H. Koto, Y. Takigawa
Summary: The addition of W and B has different effects on the superplastic deformation and grain growth of electrodeposited nanocrystalline Ni alloys. The addition of W increases the energy required for grain boundary sliding, thereby inhibiting superplasticity; while the addition of B successfully suppresses grain growth and improves the mechanical properties after superplastic deformation.
MATERIALS TRANSACTIONS
(2022)
Article
Chemistry, Physical
Weiwei Zhang, Baosong Li, Tianyong Mei, Mingyuan Li, Ming Hong, Ziwei Yuan, Hongqiang Chu
Summary: In this study, nickel-graphene oxide nanocrystalline coatings with uniform structure were fabricated using co-electrodeposition technique. The effects of graphene oxide and current density on the coatings' properties were systematically investigated. The results showed that the addition of graphene oxide improved the corrosion resistance, and the current density could change the structure and anti-corrosive features of the coatings.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Engineering, Mechanical
Hai Wang, Konrad Koenigsmann, Shuyuan Zhang, Yi Li, Huan Liu, Hui Liu, Ling Ren, Dong Qiu, Ke Yang
Summary: Superplasticity at low temperatures and high strain rates has been achieved in a Ti6Al4V5Cu model alloy using a multiphase nanocrystalline network (MPNN). The onset temperature for superplasticity in this alloy is 250°C lower than that of Ti6Al4V alloy, and it exhibits superplasticity even at extremely high strain rates. This research is significant for the development of more economical and efficient superplastic deformation processes.
INTERNATIONAL JOURNAL OF PLASTICITY
(2023)
Article
Chemistry, Physical
Hongwei You, Peixia Yang, Xuejiang Wang, Xiangkui Yang, Yunfei Sun, Maozhong An
Summary: Nanocrystalline Ni-Mo alloy coatings with excellent brightness, high hardness, and corrosion resistance were successfully prepared through electrodeposition. The electrodeposition behavior of Ni-Mo alloy coatings was studied, revealing that the nucleation rate can be accelerated by increasing the current density. XRD and TEM analysis showed that the grain size decreased and dif-fraction peaks gradually disappeared with the increase of Mo content in the alloy coating. The microhardness of the alloy coating was influenced by solid solution strengthening, texture evolution, and plastic deformation. The corrosion resistance of the Ni-Mo alloy coating was found to be better than that of pure Ni coating, with the optimal corrosion resistance achieved at a Mo content of about 15 at%.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Characterization & Testing
Joachim E. Hoffmann, Vrushali Pawar, Dietmar Eifler, Tina Eyrisch, Torsten Hielscher, Monika Saumer, Patrick Klaer, Martin-Tobias Schmitt, Peter Starke
Summary: This study investigates the surface states of electrochemically deposited nanocrystalline nickel-iron thin strips after grinding. The cutting depth and grinding process have an impact on the microstructures and residual stresses on the surfaces. Grinding induces cold plastic deformation and thermoplastic deformation, resulting in changes in residual stresses on the surface.
Article
Multidisciplinary Sciences
Yu-Jyun Kao, Yu-Ju Li, Yu-An Shen, Chih-Ming Chen
Summary: In this study, the mechanical properties of Cu foils fabricated through electroplating with various SPS concentrations were examined using tensile tests. The SPS concentration affected the grain size of the Cu foils, resulting in different mechanical properties. A significant Hall-Petch effect was demonstrated, indicating the influence of grain size on the mechanical properties of the electroplated Cu foils.
SCIENTIFIC REPORTS
(2023)
Article
Electrochemistry
Aylar G. M. Ghashghaei, Mohammad Ebrahim Bahrololoom
Summary: This study compared the brightness of electroplated nanocrystalline nickel coating with traditional electroplated bright nickel coating. The results showed that using saccharin instead of expensive brightening agents can achieve the same gloss. Computational chemistry results indicated that the most probable adsorption state of brightening additives is when the aromatic ring, double bond, or triple bond of the brightener molecule approaches the cathode surface during the adsorption process.
TRANSACTIONS OF THE INSTITUTE OF METAL FINISHING
(2023)
Article
Materials Science, Multidisciplinary
Qijun Xia, Pengwei Ren, Huimin Meng
Summary: This paper introduces a novel method for preparing coatings with different microstructures (nano-crystalline, amorphous-nanocrystalline composite, and amorphous) in the same material system and finds that the amorphous-nanocrystalline Ni-P alloy has higher hardness and better wear resistance.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Chemistry, Physical
Guang-Ling Yang, Yuejun Ouyang, Zhi-Hui Xie, Yue Liu, Wenxin Dai, Liang Wu
Summary: This study introduces a new photoelectrochemical cathodic protection technology that can indirectly protect metals with low corrosion potential by introducing an interlayer with high corrosion potential between the substrate and semiconductor. This methodology, demonstrated on a magnesium alloy, is not limited to specific metals and has the potential to be applied to other structural metals with low corrosion potential.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Physical
Kun Hee Lee, Wonhyo Kong, Myeongjin Han, Da Jung Park, Jee Hyuk Ahn, Seung Zeon Han, Young-Bae Park, Kyu Hwan Lee, Seunghoe Choe
Summary: Nanocrystalline CuAg foils were fabricated with high strength, electrical conductivity, and moderate ductility. Mild annealing further improved the strength and conductivity of the foils to achieve properties comparable to those of deformed CuAg of greater thicknesses. However, annealing at higher temperatures resulted in decreased strength and increased conductivity of the foils due to grain boundary segregation and precipitation of Ag atoms.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Michel J. R. Hache, Jason Tam, Uwe Erb, Yu Zou
Summary: High-entropy alloy (HEA) design is a promising approach to stabilize nanocrystalline materials with high strength and hardness. This study investigates the synthesis and characterization of electrodeposited HEAs from aqueous electrolytes, providing insights for developing new high-strength, thermally stable, and scalable nanostructured materials.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Liu Wan, Yuqi Wang, Dianyu Jiang, Yan Zhang, Mingjiang Xie, Jian Chen, Cheng Du
Summary: A rational nickel sulfide @ nickel boride (Ni9S8@-Ni2B) heterostructure is synthesized on carbon cloth (CC) substrate via a simple electrodepositon strategy followed by a chemical reduction method. The hierarchically porous Ni9S8@Ni2B nanosheet arrays can expose ample electro-active centers, shorten ion diffusion distance, and buffer volume changes during charging/discharging process. The Ni9S8@Ni2B//porous carbon asymmetric supercapacitor exhibits a high specific capacity, sound rate capability, and good cycling performance.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Physical
Min Li, Yunyun Luo, Chen Jia, Qiankun Zhang, Guoxi Luo, Libo Zhao, Rabah Boukherroub, Zhuangde Jiang
Summary: In this study, bimetal nickel-cobalt phosphate nanostructures were successfully synthesized on nickel foam for hybrid supercapacitors by a facile one-step electrodeposition method. The optimized NiCoP/NF2 electrode exhibited excellent capacitive performance with high specific capacity, good rate performance, and high coulombic efficiency. The proposed electrodeposition synthesis process and the prepared NiCoP composites show great potential for applications in energy storage technology.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Nanoscience & Nanotechnology
Jie Zhang, Xiaoyang Chen, MingJian Ding, Jiaqiang Chen, Ping Yu
Summary: This study enhances the compositional inhomogeneity of relaxor ferroelectric thin films to improve their dielectric temperature stability. The prepared films exhibit a relatively high dielectric constant and a very low variation ratio of dielectric constant over a wide temperature range.
SCRIPTA MATERIALIA
(2024)
Article
Nanoscience & Nanotechnology
Xiaoyu Chen, Ranran Zhang, Hao Zou, Ling Li, Qiancheng Zhu, Wenming Zhang
Summary: Polyaniline-manganese dioxide composites exhibit high conductivity, long discharge platform, and stable circulation, and the specific capacity is increased by providing additional H+ ions to participate in the reaction.
SCRIPTA MATERIALIA
(2024)
Article
Nanoscience & Nanotechnology
Xutao Huang, Yinping Chen, Jianjun Wang, Gang Lu, Wenxin Wang, Zan Yao, Sixin Zhao, Yujie Liu, Qian Li
Summary: This study aims to establish a novel approach to better understand and predict the behavior of materials with multi-scale lamellar microstructures. High-resolution reconstruction and collaborative characterization methods are used to accurately represent the microstructure. The mechanical properties of pearlite are investigated using crystal plasticity simulation and in-situ scanning electron microscopy tensile testing. The results validate the reliability of the novel strategy.
SCRIPTA MATERIALIA
(2024)
Article
Nanoscience & Nanotechnology
Cheng Chen, Fanchao Meng, Jun Song
Summary: This study systematically investigated the unfaulting mechanism of single-layer interstitial dislocation loops in irradiated L12-Ni3Al. The unfaulting routes of the loops were uncovered and the symmetry breaking during the unfaulting processes was further elucidated. A continuum model was formulated to analyze the energetics of the loops and predict the unfaulting threshold.
SCRIPTA MATERIALIA
(2024)
Article
Nanoscience & Nanotechnology
Darshan Bamney, Laurent Capolungo
Summary: This work investigates the formation of adjoining twin pairs (ATPs) at grain boundaries (GBs) in hexagonal close-packed (hcp) metals, focusing on the co-nucleation (CN) of pairs of deformation twins. A continuum defect mechanics model is proposed to study the energetic feasibility of CN of ATPs resulting from GB dislocation dissociation. The model reveals that CN is preferred over the nucleation of a single twin variant for low misorientation angle GBs. Further analysis considering GB character and twin system alignment suggests that CN events could be responsible for ATP formation even at low m' values.
SCRIPTA MATERIALIA
(2024)
Article
Nanoscience & Nanotechnology
Bing Han, Zhengqian Fu, Guoxiang Zhao, Xuefeng Chen, Genshui Wang, Fangfang Xu
Summary: This study investigates the behavior of electric-field induced antiferroelectric to ferroelectric (AFE-FE) phase transition and reveals the evolution of atomic displacement ordering as the cause for the transition behavior changing from sharp to diffuse. The novel semi-ordered configuration results from the competing interaction between long-range displacement modulation and compositional inhomogeneity, which leads to a diffuse AFE-FE transition while maintaining the switching field.
SCRIPTA MATERIALIA
(2024)
Article
Nanoscience & Nanotechnology
Akib Jabed, Golden Kumar
Summary: This study demonstrates that cryogenic rejuvenation promotes homogeneous-like flow and increases ductility in metallic glass samples. Conversely, annealing has the opposite effect, resulting in a smoother fracture surface.
SCRIPTA MATERIALIA
(2024)
Article
Nanoscience & Nanotechnology
Xin Ji, Yan Chong, Satoshi Emura, Koichi Tsuchiya
Summary: A heterogeneous microstructure in Ti-15Mo-3Al alloy with heterogeneous distributions of Mo element and omega(iso) precipitates has achieved a four-fold increase in tensile ductility without a loss of tensile strength, by blocking the propagation of dislocation channels and preventing the formation of micro-cracks.
SCRIPTA MATERIALIA
(2024)
Article
Nanoscience & Nanotechnology
Amit Samanta, Prasanna Balaprakash, Sylvie Aubry, Brian K. Lin
Summary: This study proposes a combined large-scale first principles approach with machine learning and materials informatics to quickly explore the chemistry-composition space of advanced high strength steels (AHSS). The distribution of aluminum and manganese atoms in iron is systematically explored using first principles calculations to investigate low stacking fault energy configurations. The use of an automated machine learning tool, DeepHyper, speeds up the computational process. The study provides insights into the distribution of aluminum and manganese atoms in systems containing stacking faults and their effects on the equilibrium distribution.
SCRIPTA MATERIALIA
(2024)
Article
Nanoscience & Nanotechnology
Guowei Zhou, Yuanzhe Hu, Zizheng Cao, Myoung Gyu Lee, Dayong Li
Summary: In this work, a physics-constrained neural network is used to predict grain-level responses in FCC material by incorporating crystal plasticity theory. The key feature, shear strain rate of slip system, is identified based on crystal plasticity and incorporated into the loss function as physical constitutive equations. The introduction of physics constraints accelerates the convergence of the neural network model and improves prediction accuracy, especially for small-scale datasets. Transfer learning is performed to capture complex in-plane deformation of crystals with any initial orientations, including cyclic loading and arbitrary non-monotonic loading.
SCRIPTA MATERIALIA
(2024)
Article
Nanoscience & Nanotechnology
Pengfei Yang, Qichang Li, Zhongying Wang, Yuxiao Gao, Wei Jin, Weiping Xiao, Lei Wang, Fusheng Liu, Zexing Wu
Summary: In this study, the HER performance of Ru-based catalysts is significantly improved through the dual-doping strategy. The obtained catalyst exhibits excellent performance in alkaline freshwater and alkaline seawater, and can be stably operated in a self-assembled overall water splitting electrolyzer.
SCRIPTA MATERIALIA
(2024)
Article
Nanoscience & Nanotechnology
Ilias Bikmukhametov, Garritt J. Tucker, Gregory B. Thompson
Summary: Depositing a Ni-1at. % P film can facilitate the formation of multiple quintuple twin junctions, resulting in a five-fold twin structure and a pentagonal pyramid surface topology. The ability to control material structures offers opportunities for creating novel surface topologies, which can be used as arrays of field emitters or textured surfaces.
SCRIPTA MATERIALIA
(2024)
Article
Nanoscience & Nanotechnology
Zening Yang, Weiwei Sun, Zhengyu Sun, Mutian Zhang, Jin Yu, Yubin Wen
Summary: Multicomponent oxides (MCOs) have wide applications and accurately predicting their thermal expansion remains challenging. This study introduces an innovative attention-based deep learning model, which achieves improved performance by using two self-attention modules and demonstrates adaptability and interpretability.
SCRIPTA MATERIALIA
(2024)
Article
Nanoscience & Nanotechnology
Ze Liu, Cai Chen, Yuanxun Zhou, Lanting Zhang, Hong Wang
Summary: This study attempts to address the gap in cooling rates between thin film deposition and bulk metallic glass (BMG) casting by correlating the glass-forming range (GFR) determined from combinatorial materials chips (CMCs) with the glass-forming ability (GFA) of BMG. The results show that the full-width at half maximum (FWHM) of the first sharp diffraction peak (FSDP) is a good indicator of BMG GFA, and strong positive correlations between FWHM and the critical casting diameter (Dmax) are observed in various BMG systems. Furthermore, the Pearson correlation coefficients suggest possible similarities in the GFA natures of certain BMG pairs.
SCRIPTA MATERIALIA
(2024)
Article
Nanoscience & Nanotechnology
Mike Schneider, Jean-Philippe Couzinie, Amin Shalabi, Farhad Ibrahimkhel, Alberto Ferrari, Fritz Koermann, Guillaume Laplanche
Summary: This work aims to predict the microstructure of recrystallized medium and high-entropy alloys, particularly the density and thickness of annealing twins. Through experiments and simulations, a database is provided for twin boundary engineering in alloy development. The results also support existing theories and empirical relationships.
SCRIPTA MATERIALIA
(2024)