Article
Physics, Applied
Yasuaki Hara, Wenliang Zhu, Gaofeng Deng, Elia Marin, Qixin Guo, Giuseppe Pezzotti
Summary: In this paper, the piezospectroscopic effect for beta-Ga2O3 is calibrated using spatially resolved Raman spectroscopy. The relationships between observed band shifts and residual stresses are clarified, and the phonon deformation potentials of the Raman bands are determined. An example of quantitative analysis of the residual stress field in a Ga2O3 thin film grown on (0001) sapphire is provided.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2023)
Article
Engineering, Civil
Namgyu Kim, Jong-Jae Lee
Summary: This study explored the use of Photoluminescence piezospectroscopy (PLPS) for noncontact stress measurement of concrete, revealing that alumina in concrete can serve as a passive stress sensor by PLPS. The research found that spectral detectability increases with increasing alumina concentrations and that compressive stress and spectral shifts have a negative linear relationship.
JOURNAL OF CIVIL STRUCTURAL HEALTH MONITORING
(2021)
Article
Engineering, Manufacturing
Peng Ruitao, Zhao Linfeng, Tong Jiawei, Fu Xiuli, Chen Meiliang
Summary: This paper studies the influence of pre-stress on cutting ring parts using theoretical derivation, numerical simulation, and experiments. The research results indicate that pre-stress has a significant impact on residual stress during machining, cutting force, chip morphology, and surface quality. The development of a novel pre-stressed cutting device for ring parts is also proposed in the study.
JOURNAL OF MANUFACTURING PROCESSES
(2021)
Article
Chemistry, Physical
Gustavo Pinto, Andresa Baptista, Francisco Silva, Jacobo Porteiro, Jose Miguez, Ricardo Alexandre
Summary: The study investigated the behavior of different ball materials in micro-abrasion tests, revealing that softer materials like PTFE are more prone to particle entrapment and grooving wear, while AISI 304 steel balls also allow particle entrapment. This study expands existing knowledge to help better select ball materials for ball-cratering tests.
Article
Chemistry, Applied
Barbara Szczesniak, Sylwia Glowniak, Jerzy Choma, Mietek Jaroniec
Summary: A facile mechanochemical synthesis was used to produce highly mesoporous carbon-alumina composites from sustainable main precursors. The synthesized composites exhibited high specific surface areas and large pore volumes, and the presence of carbon component enhanced their CO2 adsorption capacities. The proposed synthesis strategy shows great potential for applications in adsorption and catalysis.
MICROPOROUS AND MESOPOROUS MATERIALS
(2022)
Article
Engineering, Civil
Nan Lv, Dong Liu, Jianguo Wang, Haodong Rao, Jungang Nan
Summary: The thermal processing of rolled rings leads to the accumulation of massive residual stresses, which seriously affects the structural strength, dimensional stability, and service life of the component. Effective control of the quenching residual compressive stresses is crucial. This research explores the stress control efficiency of rolling rings using the thermal bulge stress relief technique. The results show that the optimized process reduces stress levels to within about +/- 50 MP and increases the stress homogenization index by approximately 60-90%.
ARCHIVES OF CIVIL AND MECHANICAL ENGINEERING
(2023)
Article
Engineering, Mechanical
Hitonobu Koike, Katsuyuki Kida, Koshiro Mizobe, Toshihiko Matsumura, Masahiro Inagaki
Summary: The influence of PEEK composite solid lubricant film on the lifespan of hybrid radial polymer bearings was studied, revealing that the formation of PEEK/graphite film can provide effective self-lubrication properties.
TRIBOLOGY INTERNATIONAL
(2022)
Article
Engineering, Mechanical
Byung-Kook Kim, Do-Lyeol Han, Kyeong-Hee Kang, Jinseok Kim, Dae-Eun Kim
Summary: This study investigated the tribological properties of micro ball bearings made of borosilicate glass balls and polymer guide. Results showed low friction coefficient and excellent wear resistance under high load conditions. Finite element simulation suggested that using a U-groove guide could enhance the tribological properties of the bearings.
Article
Materials Science, Multidisciplinary
Ali Vedaei-Sabegh, Jean-Benoit Morin, Henri Champliaud, Mohammad Jahazi
Summary: This study investigates the mechanical characteristics of oxide layers on high-strength steels and their effects on interfacial friction during deformation. The results show that the formation of oxide layers can reduce interfacial friction and deformation load, acting as lubricants at high temperatures.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Automation & Control Systems
Luca Sangalli, Aitor Oyanguren, Jon Larranaga, Aitor Arana, Mikel Izquierdo, Ibai Ulacia
Summary: This study conducted a multi-variable analysis of load distribution in ball screws using a numerical tool based on analytical contact model and high-order FE models, which shows high accuracy, adaptability, versatility, and efficiency compared to other existing models.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2022)
Article
Engineering, Mechanical
Jing Liu, Lei Xue, Zidan Xu, Hao Wu, Guang Pan
Summary: This study investigates the impact of manufacturing errors on the vibrations of high-speed flexible ACBB, considering waviness amplitude and order. Experimental results confirm that waviness amplitude and order greatly affect the vibrations of high-speed flexible ACBB, with vibrations in flexible ring cases being larger than those in rigid ring cases.
MECHANISM AND MACHINE THEORY
(2021)
Article
Automation & Control Systems
Jiacheng Wang, Huajun Cao, Yuhu Liu, Xiaohui Huang
Summary: This study investigates the formation mechanism and special distribution of residual stress during the power honing process. Experimental and simulation results reveal that the residual compressive stress is mainly caused by plastic deformation and its special distribution is due to smaller scratch spacing. The influence of preload force and groove spacing on residual stress is also studied.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Bo Wang, Bei Han, Youwei Li, Fei Gao, Chaohui Chen, Junqiang He, Ke Wang
Summary: This paper proposes a chipless sensor based on the split-ring resonator and temperature-sensitive material as the substrate, aiming to address the limitations of traditional chipped sensors in terms of high costs and sophisticated circuit structures. The sensor utilizes alumina ceramics as the sensitive material to reflect the environment temperature by its monotonically increasing dielectric constant with rising temperature. Simulation results demonstrate that the resonant frequency of the sensor monotonically decreases from 8.58 GHz to 8.22 GHz, with an offset of 0.36 GHz and a sensitivity of 0.9 MHz/°C for a temperature variation from 500°C to 900°C. The designed sensor exhibits good resonance characteristics, is wireless, passive, and low cost, has a planar structure, and is suitable for various harsh environments.
Article
Automation & Control Systems
Zhang Ping, Wang Penghao, Yue Xiujie, Zhai Yanchun, Yu Xiao
Summary: In order to explore the influence of tool geometric parameters on the residual stress of 7A04 aluminum alloy in large-strain extrusion machining (LSEM), the LSEM process was simulated using Abaqus finite element analysis software. The results showed that LSEM can result in larger residual compressive stress or smaller residual tensile stress compared to conventional cutting process. Adding microtextures to only the constraining tool can effectively reduce the residual tensile stress or increase the residual compressive stress. The best option for tool geometric parameters is lambda = 0.75, alpha = 15 degrees, R = 0.3, and theta = 2 degrees, with the addition of a rectangular-sectioned strip texture to only the constraining tool.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2022)
Article
Materials Science, Coatings & Films
F-Z Abbes, C. Coupeau, J. Durinck, M. Talea, Y. Ni, G. Parry
Summary: This study investigates the post-buckling equilibrium shapes that develop on parallel delaminated stripes of films under biaxial compressive stress, with a focus on the effect of substrate elasticity on the expected buckled morphologies. Finite element methods are used to simulate various equilibrium configurations, resulting in a morphological map showing that the stability domains of elementary buckles shift to lower stresses as substrate stiffness decreases and the stability domain of telephone cord buckles is enlarged. An intermediate domain between bubbles and straight-sided/telephone cord buckles is identified, characterized by hook-like or bone-like structures.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Materials Science, Ceramics
Dan Zhao, Yi Feng, Zhipeng Pi, Fan Zhang
Summary: Phase equilibria in the ZrO2-GdO1.5-TaO2.5 (ZGTO) system were experimentally investigated, and the differences between ZGTO and the existing ZrO2-YO1.5-TaO2.5 (ZYTO) were discussed. The study is useful for thermodynamic assessment of ZGTO and can guide the design of novel thermal barrier coatings materials.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Yutaka Ohya, Wingki Mey Hendra, Chika Takai-Yamashita, Takayuki Ban
Summary: Diffusion couples of rutile and corundum single crystals were prepared and examined to study the solid solution and precipitation of corundum in rutile during cooling. Different precipitation forms of corundum were observed under different cooling conditions.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Jiaming Zhan, Yunfa Guo, Hao Wang
Summary: This study systematically investigates the mechanical behaviors of calcium fluoride in humid environments. The effects of water on the deformation and plastic enhancement of CaF2 under indentation are explored through microindentation experiments, atomic simulations, and Raman spectroscopy measurement.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Hangfeng Zhang, Henry Giddens, Theo Graves Saunders, Matteo Palma, Isaac Abrahams, Haixue Yan, Yang Hao
Summary: The relationship between low and high frequency tunabilities in tin substituted barium titanate ceramics was investigated. It was found that there are differences in tunabilities at different frequencies due to the different activities of larger ferroelectric domains and polar nanoclusters.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Kaibiao Xi, Jiacheng Liu, Beibei Song, Huarong Cheng, Yihao Li, Xiaole Yu, Mupeng Zheng, Mankang Zhu, Yudong Hou
Summary: Composite modulation in the superparaelectric state of the BTBZ-CT system is proposed as an effective strategy to achieve both NTCC and excellent energy storage performance in dielectric ceramics. The addition of BZ and CT to BT ferroelectrics can move the SPE state to the normal use temperature zone, resulting in enhanced NTCC characteristics and energy storage performance. Furthermore, intentional precipitation of CT at grain boundaries can refine the grain size, increase the bandgap, and strengthen the local electric field distribution, thereby enhancing the breakdown electric field.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Hamed Salimkhani, Lovro Fulanovic, Till Froemling
Summary: The demand for robust multilayer ceramic capacitors with high-temperature and high-power capabilities is increasing rapidly. However, cost-effective production is a challenge. This study investigates the use of Na0.5Bi0.5TiO3-based materials as promising lead-free options. By adding sintering aids, the sintering temperature of Na0.5Bi0.5TiO3-BaTiO3-CaZrO3-BiAlO3 solid solutions was successfully reduced to 975 degrees C, suitable for co-sintering with Cu electrodes without adverse effects on capacitor properties.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Mingxing Li, Ran Mo, Zeshui Xu, Jie Zhou, Conglin Zhang, Xuefeng Cui, Fang Ye, Laifei Cheng, Ralf Riedel
Summary: Polymer infiltration and pyrolysis is an effective method for preparing ceramic matrix composites. The transformation of polymer to ceramic during the process affects the residual stress and interface behavior in the composites.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Yan Kang, Lin Chen, Chang-Jiu Li, Guan-Jun Yang
Summary: A novel abradable seal coating with low hardness and high bonding strength was successfully designed and prepared. This coating has significantly higher abradability and erosion resistance compared to metal-based coatings, and can retain excellent abradability and have a long lifetime during service.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Qingzhong Song, Xiangdong Zha, Ming Gao, Yingche Ma
Summary: This study analyzes the influence of calcia refractory purity on the properties of calcia crucibles. Higher purity calcia results in well-developed grains and improved hydration resistance, leading to better high-temperature strength and thermal shock resistance. In contrast, lower purity calcia crucibles exhibit inferior properties. Therefore, high-purity calcia is considered a potential refractory for manufacturing oxide crucibles.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Sehreish Abrar, Faisal Nazeer, Zhuang Ma, Ling Liu, Abdul Malik, Mustafa Kamal, Abdullah G. Al-Sehemi
Summary: To raise the operating temperature of Si-based ceramic matrix composites (CMCs), researchers have applied thermal/environmental barrier coating (T/EBCs) materials, typically rare earth silicates. However, the high thermal conductivity and the mismatch of thermal expansion have been major challenges in developing new materials that can offer thermal insulation and environmental protection to CMCs. In this study, entropy engineering was used to create a multicomponent equi-atomic single-phase pyro silicate with extremely low thermal conductivity and enhanced water vapor corrosion resistance. The research findings show the potential of high entropy disilicates in achieving ultra-low thermal conductivity and low weight loss in corrosive environments.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Zi-bo Niu, Daxin Li, Dechang Jia, Zhihua Yang, Kunpeng Lin, Paolo Colombo, Ralf Riedel, Yu Zhou
Summary: In this study, SiBCN ceramics with a special structure were prepared to improve the oxidation resistance. The effect of the structure on oxidation behavior and kinetics was investigated, revealing that the special structure can effectively inhibit heterogeneous oxidation and enhance the oxide layer composition.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Melike Donmez, Metehan Erdogan, Cihangir Duran
Summary: The limited densification of CeO2 ceramics was improved by using an anorthite-based glass, resulting in high dielectric constant and quality factor with minimum dielectric loss. The CeO2-(anorthite-based) glass ceramic showed promising results in terms of low temperature densification and microwave properties.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
S. Rahmati, R. G. A. Veiga, J. Mostaghimi, T. Coyle, A. Dolatabadi
Summary: This study provides an atomic-scale description of the high-velocity impact of alpha-Al2O3 particles onto an alpha-Al2O3 substrate during Aerosol Deposition (AD). The results suggest that the crystal orientation plays a crucial role in both plasticity and damage of the nanoparticles. Impact velocity has a direct correlation with plasticity and fragmentation, but adhesion efficiency has only a marginal increase. The crucial element lies in the substrate's surface alterations caused by the fragments left on the substrate after impact.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Bo-Wen Chen, Yan-Mei Kan, De-Wei Ni, Chun-Jing Liao, Hong-Da Wang, Yu-Sheng Ding, Shao-Ming Dong
Summary: This study characterized the long-term and repeated ablation properties of modified Cf/HfC-SiC composites with YB4-Al2O3-Si3N4 under an air plasma torch. The structural stability and viscosity of the oxide layer were found to affect the ablation resistance of the composites. By forming nano c-HfO2 grains and high-viscosity Al-Si-Y-O glassy phase, the structural stability of the oxide layer was improved, resulting in enhanced ablation resistance. However, the oxidation of Si3N4 led to the formation of NO, NO2, and excessive SiO2 glassy phase, which resulted in a porous structure and reduced the viscosity of the oxide layer. Therefore, the addition of Si3N4 decreased the ablation resistance of the composites.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Yongxing Wei, Huawei Zhang, Siyuan Dong, Changqing Jin, Chenxing Bai, Junle Dai, Zengzhe Xi, Zhonghua Dai, Zengyun Jian, Li Jin
Summary: In this study, solid solutions of xBi(Ni1/2Hf1/2)O-3-(1 - x)PbTiO3 (xBNH-PT) were synthesized to investigate their phase boundary behaviors and physical properties. The presence of a tetragonal-pseudocubic phase boundary and a spontaneous ferroelectric-relaxor transition at specific compositions were confirmed. The introduction of a tetragonal-pseudocubic phase boundary improved the piezoelectric properties and suppressed the spontaneous ferroelectric-relaxor transition.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)