Article
Engineering, Mechanical
Liu Yang, Jiaqi Li, Deguo Wang, Yanbao Guo, Qingyang Li, Wei Li, Renbo Xu, D. L. Chen, D. Y. Li
Summary: Coiled tubing (CT) steels with similar microstructures can exhibit significant differences in mechanical and tribological properties. Electron work function (EWF) analysis suggests that minor elements in the steels may play a crucial role in strengthening local atomic bonding, thereby influencing the properties of CT steels. EWF shows promise as an indicator to supplement conventional techniques for understanding material behavior and identifying key factors for material design or tailoring.
Article
Chemistry, Physical
Nengchao Luo, Wei Nie, Junju Mu, Shiyang Liu, Mingrun Li, Jian Zhang, Zhuyan Gao, Fengtao Fan, Feng Wang
Summary: This study demonstrates that indium nanoparticles can enhance the selectivity and activity of ZnIn2S4 for the scission of methanol C-H bonds, resulting in high selectivity and relatively high production rate of EG by facilitating photogenerated electron transfer and enriching the electrons.
Article
Materials Science, Multidisciplinary
Sudip Pokharel, Huaxiang Fu
Summary: The study found that the local magnetic moment significantly stabilizes the FeSe system and induces a strong magnetostriction effect. Furthermore, the LMM substantially alters the electron band structures and Fermi surfaces in the superconductor, leading to rich and interesting physics that can be tuned.
Article
Nanoscience & Nanotechnology
Liqiu Guo, Yunqing Tang, Juan Cui, Jiaqi Li, Jer-Ren Yang, D. Y. Li
Summary: This study uses atomic force microscopy in-situ analysis and first-principles calculations to show that the strength of M7C3 carbide is governed by its metallic bond component. It also theoretically proves that M7C3 carbide can be tailored by partially replacing its metallic elements with substitutes selected based on their work function. This insight into the electronic origin of carbide's mechanical behavior helps guide the development of high-performance M7C3 carbides.
SCRIPTA MATERIALIA
(2021)
Article
Automation & Control Systems
Haoyue Jia, Jianchao Han, Kun Li, Yunzhong Lai, Tao Wang
Summary: This article investigates the bonding mechanism of Mg/Al laminate composites under low pressure during the initial bonding stages at reduction ratios of 14.5% and 21.75%. The study reveals that electrons overcome potential barriers between Mg and Al to form metallic bonds. The good agreement between theory and experiment highlights the importance of overcoming potential barriers in the early bonding stages of bimetal composite plates.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2022)
Article
Biochemistry & Molecular Biology
Angel Martin Pendas, Francisco Munoz, Carlos Cardenas, Julia Contreras-Garcia
Summary: This study introduces a real space understanding of the Su-Schrieffer-Heeger model of polyacetylene through delocalization indices defined within the quantum theory of atoms in molecules, providing insights into the relevance of sublattices induced by chiral symmetry. The approach enables differentiation between different phases of insulators and helps identify chirality and topological behavior in the system.
Article
Engineering, Environmental
Guangfa Wang, Yong Liu, Baiyi Zu, Da Lei, Yanan Guo, Meimei Wang, Xincun Dou
Summary: Introducing reversible adhesive hydrogel into the field of sampling wipe enhances sampling efficiency and facilitates the development of fundamental science and technology. The proposed polyacrylic acid/polyvinyl alcohol-borax (PAA/PVA-B) hydrogel with double-network microstructure and various functional groups demonstrates excellent reversible adhesion and high transfer efficiency. It enables efficient wipe sampling of explosives and offers on-site visualization, expanding the applications of hydrogel and sampling methods.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Jianping Lai, Jinhui Liu, Hailong Hu, Jiaxin Yu, An Zhang, Weifeng Yuan, Zhiming Gao
Summary: The contribution of hardness and work hardening to the wear resistance of Pt-based metallic surfaces under reciprocating sliding contact were investigated using atomic force microscopy. It was found that Pt(1 1 1) exhibited a larger adhesion than Pt-BMG at low loads, while Pt-BMG showed higher hardness and was expected to have higher wear resistance at high loads. However, Pt(1 1 1) actually performed better, possibly due to the work hardening mechanism associated with dislocated-mediated deformation.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Christian Kisielowski, Petra Specht, Steve Rozeveld, Bert Freitag, Erik R. Kieft, Joo Kang, Alyssa J. Fielitz, Thomas R. Fielitz, Dirk Dyck, David F. Yancey
Summary: This study investigates the structural alterations of functional materials under electron irradiation using ultra-low-dose electron diffraction. The results show that the fading diffraction patterns depend on the irradiated area and beam current, and heat generation and inelastic scattering events play a role in radiation hardness. A unified model predicts the existence of a critical dose rate for any material and explains how Brillouin scattering triggers time-temperature transformations.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Entomology
Steven Huth, Lisa-Maricia Schwarz, Stanislav N. Gorb
Summary: This study investigates the adhesive properties of Hypochaeris radicata pollen and the dependence on pollen aging by quantifying the pull-off forces from glass slides. The results show that the adhesion between pollen and glass increases over time as the pollen ages.
Article
Biochemistry & Molecular Biology
Sudip Pan, Gernot Frenking
Summary: Pauling's influence on the understanding of chemical bonding was significant, as he connected quantum theoretical description with Gilbert Lewis's classical bonding model. His introduction of the concept of resonance provided a consistent description for molecules, metals, and ionic crystals. However, his one-sided restriction to the valence bond method and rejection of the molecular orbital approach hindered further development of chemical bonding theory.
Article
Materials Science, Ceramics
Shuo Yuan, Jiaojuan Zou, Naiming Lin, Hongxia Zhang, Dongyang Li, Yucheng Wu
Summary: The gradient titanium oxide ceramic layer generated by thermal oxidation process significantly improves the corrosion resistance of Ti6Al4V alloy due to its excellent chemical stability and semiconductor properties.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Hwi Je Woo, Seongchan Kim, Young-Jin Choi, Jeong Ho Cho, Seong Heon Kim, Young Jae Song
Summary: The work function of graphene devices on SiO2 substrates is studied using Kelvin probe force microscopy, revealing gate voltage-dependent work-function hysteresis. The inhomogeneous distribution of chemical species at the graphene/SiO2 interface leads to varying degrees of hysteresis across different positions on the graphene.
Article
Materials Science, Ceramics
Jiaqi Lu, Fengpei Zhang, William Yi Wang, Gang Yao, Xingyu Gao, Ya Liu, Zhi Zhang, Jun Wang, Yiguang Wang, Xiubing Liang, Haifeng Song, Jinshan Li, Pingxiang Zhang
Summary: Materials descriptors with multivariate, multiphase, and multiscale characteristics have been used to study the composition-processing-structure-property-performance (CPSPP) relationships in advanced materials. This study presents a hybrid data-driven and knowledge-enabled model to explain the composition-property-performance relationships, and applies it to design cost-effective superhard high-entropy diboride ceramics (HEBs). Machine learning and first-principles calculations are used to identify dominant features and validate the model. The results show that hardness is influenced by mean electronegativity, electron work function, and average d valence electrons of composition.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Engineering, Chemical
A. F. M. Cardenas, F. S. F. Siqueira, L. A. R. Morales, L. C. R. Araujo, V. S. Campos, J. R. Bauer, A. Reis, A. D. Loguercio
Summary: The study found that the application of silver diamine fluoride (SDF) can increase the resin-eroded dentin bond strength without significantly affecting the in-situ degree of conversion for universal adhesives. SDF has an impact on the chemical/morphological changes in dentin and adhesive/hybrid layer, with a more significant effect observed at 38% SDF concentration.
INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES
(2021)
Article
Materials Science, Multidisciplinary
Shibo Sun, Haibin Wang, Xuemei Liu, Chao Liu, Hao Lu, Zuoren Nie, Xiaoyan Song
Summary: In this study, it was found that a boride coating fabricated by thermal spraying has the ability to self-repair friction-induced defects at elevated temperatures through plastic flow and redistribution of nanocrystalline particles. Additionally, strong mechanical support from the underlying coating slows down the rate of oxidation growth, proposing a new strategy for developing highly anti-oxidative ceramic-based materials.
Article
Materials Science, Multidisciplinary
Chong Zhao, Hao Lu, Xuemei Liu, Chao Liu, Zuoren Nie, Xiaoyan Song
Summary: By introducing activated nano TaC, the comprehensive properties of WC-Co cemented carbides were enhanced, forming nanoscale Co-rich particles and cubic-Ta4C3 precipitates. The combined strengthening effects resulted in excellent comprehensive mechanical properties, with the rupture strength achieving the highest level reported so far among similar materials in the literature.
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
(2021)
Article
Chemistry, Physical
Xuemei Liu, Haibin Wang, Hao Feng, Huaxin Hu, Jinghong Chen, Zhi Zhao, Gaochao Wu, Chao Liu, Hao Lu, Xiaoyan Song
Summary: The addition of WCoB significantly improves the wear resistance of ultra-coarse cemented carbides, mainly due to the high hardness of WCoB balancing the stress distribution within WC grains, reducing the likelihood of fracture and pull-out during the wear process.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Kai Guo, Hao Lu, Zhi Zhao, Fawei Tang, Haibin Wang, Xiaoyan Song
Summary: Due to the complex crystal structures and interatomic interactions, predicting the magnetic properties and effective composition design of rare earth permanent magnets is challenging. In this study, rapid and accurate prediction of the saturation magnetization of Sm-Co alloys was achieved through machine learning and the selection of characteristic elements. The developed methods are applicable for predicting properties and designing compositions of multicomponent alloys.
COMPUTATIONAL MATERIALS SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Xuemei Liu, Zhantao Liang, Haibin Wang, Zhi Zhao, Chao Liu, Hao Lu, Xiaoyan Song
Summary: In this study, WCoB was added to ultra-coarse cemented carbides to improve the oxidation- and wear-resistance at elevated temperatures. The addition of WCoB enhanced wear resistance by restraining the WC grains, and also inhibited oxidation by forming liquid B2O3 in the oxidation layer and sharing stress with WC matrix.
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Huaxin Hu, Xuemei Liu, Jinghong Chen, Hao Lu, Chao Liu, Haibin Wang, Junhua Luan, Zengbao Jiao, Yong Liu, Xiaoyan Song
Summary: This study proposes a method to enhance the high temperature compression strength of ultra-coarse cemented carbides by modulating hard matrix grains using activated TaC nanoparticles, through solid solution strengthening of Ta atoms. The mechanisms of Ta dissolution in WC crystal and strengthening of ultra-coarse grains through interaction with dislocations were revealed at the atomic scale.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Nanoscience & Nanotechnology
Jinghong Chen, Hao Lu, Haibin Wang, Fawei Tang, Xuemei Liu, Xiaoyan Song
Summary: The stress-strain behaviors of WC-Co cermets with different binder contents were studied, taking into account the residual thermal stress. The effects of binder content on the RTS and strain responses were quantified using finite element modeling based on real microstructures. The study found that RTS is linearly related to the binder content and is concentrated in specific regions of the cermet. The accumulation rate of strain partitioning and strain localization decreases with decreasing Co content.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Chemistry, Multidisciplinary
Guojing Xu, Hao Lu, Kai Guo, Fawei Tang, Xiaoyan Song
Summary: This study utilizes a home-built database to investigate the effects of element doping and microstructure scale on the phase constitution of SmCo7-based alloys using a support vector machine model. It also proposes a rule for stabilizing the 1:7 H phase. Experimental confirmation of this data-driven method and the proposed rule validate the feasibility. This work provides a quantitative strategy for composition design and tailoring grain size to achieve high stability of the 1:7 H phase in Sm-Co-based permanent magnets.
Article
Materials Science, Ceramics
Jinghong Chen, Xuemei Liu, Hao Lu, Haibin Wang, Xiaoyan Song
Summary: The effects of representative sintering techniques on the residual thermal stress (RTS) in WC-Co composites were investigated. The processing parameters of spark plasma sintering (SPS) and sinter-hot isostatic pressing (Sinter-HIP) were used to quantify RTS and its mechanisms. The results showed that the WC phase had compressive stress and the Co phase had tensile stress during cooling. The RTS was more concentrated at the acute dihedral angles of WC/Co interfaces in SPSed cermets.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Zhi Zhao, Yupeng Shan, Haibin Wang, Hao Lu, Xuemei Liu, Bowen Wang, Xiaoyan Song
Summary: This study developed a water-resistant hydrogel soil stabilizer inspired by mussel byssal. The hydrogel showed excellent toughness and ultra-low swelling ratio, allowing for its use in both dry and wet conditions. Soils strengthened with this hydrogel maintained great strength in both air and water, with good permeability and water retention capability.
CHEMISTRY OF MATERIALS
(2022)
Article
Chemistry, Physical
Lei Luo, Hao Lu, Xuemei Liu, Haibin Wang, Chao Liu, Mingsheng Wang, Xiaoyan Song
Summary: This study quantified the deformation characteristics of ceramic phase and metal binder in WC-Co cermets and proposed the mechanisms for plastic deformation. It revealed the dominant deformation mechanism and the contributions of different components to the plasticity of the cermets.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Nanoscience & Nanotechnology
Ming Xing, Haibin Wang, Zhi Zhao, Hao Lu, Chao Liu, Liangliang Lin, Mingsheng Wang, Xiaoyan Song
Summary: The microstructures and mechanical properties of WC-Co cemented carbides fabricated by the laser powder bed fusion (LPBF) process and subsequent heat-treatment were investigated, revealing the formation of nano-sized particles within WC grains after heat-treatment that enhanced the mechanical properties. Cutting performance tests under actual working conditions showed excellent service properties and promising application prospects for LPBF printed cemented carbides.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Nanoscience & Nanotechnology
Wentao Jiang, Hao Lu, Jinghong Chen, Lei Luo, Xuemei Liu, Haibin Wang, Xiaoyan Song
Summary: This study proposes an approach for toughening ceramic-based composites by modulating strain partition and stress distribution in phase-boundary regions. The concept of homogenizing lattice strain based on collective lattice shear is introduced to achieve high fracture toughness in ceramic-based composites. The feasibility of this strategy is demonstrated using ZrO2-containing WC-Co ceramic-metal composites. The crystal planes along the WC/ZrO2 martensitic transforming phase boundaries exhibit significantly larger and uniform lattice strains compared to conventional dislocation pile-up phase boundaries, enabling the composite to have high fracture toughness and hardness simultaneously. The homogenizing lattice strain strategy proposed in this study is applicable to a broad range of ceramic-based composites to achieve superior comprehensive mechanical properties.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Nanoscience & Nanotechnology
Zhantao Liang, Xuemei Liu, Zhi Zhao, Hao Lu, Haibin Wang, Chao Liu, Mingsheng Wang, Xiaoyan Song
Summary: A novel method was proposed to achieve uniform dispersion of ZrO2 nanoparticles in the WC matrix, resulting in WC-ZrO2 ceramics with outstanding mechanical properties. The high toughness of the ceramic was attributed to stress-induced phase transformation, a homogeneous ultrafine microstructure with coherent WC/ZrO2 interface, and stress release of WC near ZrO2. Factors like crack deflection and crack bridging further enhanced the fracture toughness. The contribution to toughness by ZrO2 phase transformation was found to be 1.9 and 2.7 times higher than that of crack deflection and crack bridging, respectively. This study provides a strategy to significantly increase the toughness of ceramics while maintaining high hardness.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Materials Science, Multidisciplinary
Wentao Jiang, Hao Lu, Xuemei Liu, Haibin Wang, Dongyang Li, Chao Liu, Mingsheng Wang, Xiaoyan Song
Summary: In this study, WC-Co cermet was used as a representative material to investigate its wear failure behavior and protection effectiveness. It was found that the wear mechanism transitions from mechanical wear to oxidative wear with increasing temperature. The addition of zirconia significantly improves the anti-oxidation performance and load-bearing capacity of the cermet, mainly through the modulation of the tribo-oxide layer compositions and changes in surface morphology. Based on the understanding of temperature- and oxidation-induced compositional and microstructural evolutions, a promising approach for developing ceramic-metal composites with high wear resistance and anti-oxidation capability is proposed.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
