作者：
Zhou, Jun;Fan, Xiangfang;Chen, Hongmei;Feng, Di
期刊：
Journal of Materials Research and Technology,2023年25:7101-7108 ISSN：2238-7854
通讯作者：
Zhou, J;Fan, XF
作者机构：
[Zhou, Jun; Feng, Di; Chen, Hongmei; Zhou, J] Jiangsu Univ Sci & Technol, Sch Mat Sci & Engn, Zhenjiang 212100, Peoples R China.;[Fan, Xiangfang] Univ South China, Sch Mech Engn, Hengyang 421001, Peoples R China.
通讯机构：
[Fan, XF ] U;[Zhou, J ] J;Jiangsu Univ Sci & Technol, Sch Mat Sci & Engn, Zhenjiang 212100, Peoples R China.;Univ South China, Sch Mech Engn, Hengyang 421001, Peoples R China.
关键词：
TiAlSiN coating;Arc current;High temperature oxidation behavior;Adhesion strength;Surface morphology;Zircaloy-4
摘要：
TiAlSiN coatings are deposited on zircaloy-4 by multi-arc ion plating at 50 A, 60 A and 70 A, respectively. The macro-morphology, micro-morphology, chemical composition and phases of the prepared coatings are observed and analyzed, and the high temperature oxidation behavior and adhesion strength of coatings are tested. The results demonstrate that the quantity of large particles on TiAlSiN coating increases gradually as the arc current increases, the coating becomes denser and denser with the porosity decreases gradually, and the content of Al elements in the coating increases gradually with the increase of multi-arc current. The phases of TiAlSiN coatings deposited at different multi-arc currents before oxidation mainly includes Ti3AlN, AlN, Ti2N. Meanwhile, the high temperature oxidation behavior of the coating is also improved gradually and the adhesion strength increases first and then decreases. When the arc current is 60 A, the adhesion strength is up to 23 N which is relatively large. The coatings deposited at 70 A shows the best high temperature oxidation resistance behavior, mainly due to the generation of a large amount of Al2O3 oxide in the coating after oxidation. (c) 2023 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
期刊：
Chemical Engineering Journal,2022年439:135491 ISSN：1385-8947
通讯作者：
Li, Zhenye(lizhenye@usc.edu.cn)
作者机构：
[Qian, Xitang; Li, Zhenye] Univ South China, Coll Mech Engn, Hengyang 421001, Peoples R China.;[Ying, Lei; Cao, Yong] South China Univ Technol, State Key Lab Luminescent Mat & Devices, Inst Polymer Optoelect Mat & Devices, Guangzhou 510640, Peoples R China.;[Ying, Lei] South China Inst Collaborat Innovat, Dongguan 523808, Peoples R China.;[Liang, Yingfang] Univ South China, Sch Econ Management & Law, Hengyang 421001, Peoples R China.
通讯机构：
[Zhenye Li] C;[Lei Ying] I;Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, PR China<&wdkj&>South China Institute of Collaborative Innovation, Dongguan 523808, PR China<&wdkj&>College of Mechanical Engineering, University of South China, Hengyang 421001, PR China
关键词：
All-polymer solar cells;Binary blend;Optimizing miscibility;Random ternary copolymerization;Ternary blend
作者机构：
[Luo, Xiao-Qing; Zhu, Weihua; Xu, Xiaofeng; Liu, Qinke; Chen, Zhiyong; Wang, Xin-Lin] Univ South China, Sch Elect Engn, Hunan Prov Key Lab Ultrafast Micro Nano Technol &, Hengyang 421001, Peoples R China.;[Li, Yan] Univ South China, Sch Nucl Sci & Technol, Hengyang 421001, Peoples R China.;[Liu, Wuming] Chinese Acad Sci, Inst Phys, Be?ing Natl Lab Condensed Matter Phys, Be?ing 100190, Peoples R China.;[Wang, Xin-Lin] Univ South China, Sch Mech Engn, Hengyang 421001, Peoples R China.
通讯机构：
[Xiao-Qing Luo; Xin-Lin Wang] H;Hunan Province Key Laboratory for Ultra-Fast Micro/Nano Technology and Advanced Laser Manufacture, School of Electrical Engineering, University of South China, Hengyang 421001, China<&wdkj&>Authors to whom correspondence should be addressed.<&wdkj&>These authors contributed equally to this work.<&wdkj&>Hunan Province Key Laboratory for Ultra-Fast Micro/Nano Technology and Advanced Laser Manufacture, School of Electrical Engineering, University of South China, Hengyang 421001, China<&wdkj&>Authors to whom correspondence should be addressed.<&wdkj&>School of Mechanical Engineering, University of South China, Hengyang 421001, China
摘要：
Fano resonances that feature strong field enhancement in the narrowband range have motivated extensive studies of light–matter interactions in plasmonic nanomaterials. Optical metasurfaces that are subject to different mirror symmetries have been dedicated to achieving nanoscale light manipulation via plasmonic Fano resonances, thus enabling advantages for high-sensitivity optical sensing and optical switches. Here, we investigate the plasmonic sensing and switches enriched by tailorable multiple Fano resonances that undergo in-plane mirror symmetry or asymmetry in a hybrid rotational misalignment metasurface, which consists of periodic metallic arrays with concentric C-shaped- and circular-ring-aperture unit cells. We found that the plasmonic double Fano resonances can be realized by undergoing mirror symmetry along the X-axis. The plasmonic multiple Fano resonances can be tailored by adjusting the level of the mirror asymmetry along the Z-axis. Moreover, the Fano-resonance-based plasmonic sensing that suffer from mirror symmetry or asymmetry can be implemented by changing the related structural parameters of the unit cells. The passive dual-wavelength plasmonic switches of specific polarization can be achieved within mirror symmetry and asymmetry. These results could entail benefits for metasurface-based devices, which are also used in sensing, beam-splitter, and optical communication systems.
期刊：
Diamond and Related Materials,2022年128:109283 ISSN：0925-9635
通讯作者：
Yang, Haoqi(yhq1214@126.com)
作者机构：
[Jin, Haotian; Cao, Lihua; Jiang, Shaohua; Li, Huiling; He, Shuijian; Duan, Gaigai] Nanjing Forestry Univ, Coll Mat Sci & Engn, Jiangsu Coinnovat Ctr Efficient Proc & Utilizat Fo, Int Innovat Ctr Forest Chem & Mat, Nanjing 210037, Peoples R China.;[Liu, Yi-Lin] Univ South China, Coll Mech Engn, Hengyang 421001, Peoples R China.;[Yang, Haoqi] China Bldg Mat Acad, State Key Lab Green Bldg Mat, Beijing 100024, Peoples R China.;[Li, Shanshan] Southwest Minzu Univ, Coll Pharm, Chengdu 610000, Peoples R China.;[Liu, Kunming] Jiangxi Univ Sci & Technol, Fac Mat Met & Chem, Ganzhou 341000, Peoples R China.
通讯机构：
[Haoqi Yang] S;[Shanshan Li] C;[Gaigai Duan] J;College of Pharmacy, Southwest Minzu University, Chengdu 610000, China<&wdkj&>Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China<&wdkj&>State Key Laboratory of Green Building Materials, China Building Materials Academy, Beijing 100024, China
摘要：
Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology, Volume 236, Issue 12, Page 2491-2506, December 2022. <br/>This paper presents a theoretical investigation on operation mode and load sharing strategy of hybrid foil-magnetic bearings (HFMBs). According to the inherent characteristics of gas foil bearings (GFBs) and active magnetic bearings (AMBs), six possible work scopes are discussed to understand the operation mode of HFMBs. A numerical model coupling the calculations of the film pressure in GFBs and the magnetic forces in AMBs is conducted to predict the operation performance of HFMBs. The accuracy of the model is proved by comparing the predicted and tested friction torques. Analysis on the static and dynamic performance of HFMBs within three representative cases is conducted by varying the load sharing ratio. The dynamic supporting stiffness and operation position of HFMBs can be obviously enhanced by adjusting the operating mode and load sharing strategy. Results show that the direct stiffness and dynamic damping of HFMBs adopting hybrid mode are significantly higher than those adopting AMB or GFB independent mode.
摘要：
Pores are some of the most common defects that form during direct laser deposition of ceramic materials. A mathematical model of pore formation for Al2O3-ZrO2 ceramic was developed. The pore formation model, which was developed from the bubble escape factor, reveals the relationship between the movement of the solid-liquid interface of the molten pool and that of the bubbles. In the frontier region of the molten pool, with increasing laser power, the proportion of bubbles that escaped and the area from which bubbles escaped increased. With increasing laser power, the actual and theoretical porosity decreased from 80 % to 40 %. At the central region of the molten pool, the bubble escape factor increased with increasing bubble diameter under the same laser power. The theoretical porosity and the actual porosity decreased with increasing laser power. The pore formation model provides a basis for fabricating high-quality Al2O3-ZrO2 ceramics by direct laser deposition.
摘要：
This article proposes a novel solution framework for the inverse problem considering interval uncertainty in structural or systemic responses, which provides an efficient tool for the uncertain inverse problems of nonlinear structures or systems. Interval is used to model and characterize the uncertainty, and the bounds of uncertain structural responses are only required. In each iterative step, the approximate deterministic inverse problem is constructed according to the interval analysis results, and then the identified intervals of inputs are updated by solving the approximate deterministic inverse problem. Therefore, the interval inverse problem is decoupled into a series of interval analyses and deterministic inverse problems that are alternately solved, which dramatically promotes the computational efficiency of the interval inverse problem. Besides, an iterative mechanism is proposed to ensure the convergence of the whole procedure. Finally, two numerical examples and an engineering application are investigated to demonstrate the accuracy and efficiency of the proposed method.
通讯机构：
[Qingliang Wang] S;School of Resource and Environment and Safety Engineering, University of South China, Hengyang, China<&wdkj&>Cooperative Innovation Center for Nuclear Fuel Cycle Technology and Equipment, University of South China, Hengyang, China
摘要：
In this study, a new type of phosphorylated chitosan-supported nano iron (CSP/Fe-0) composite material. CSP/Fe-0 had a high adsorption rate (99.25%) and a maximum adsorption capacity (627.34 mg g(-1)) when the conditions were pH = 6, 308.15 K and 12 h. CSP/Fe-0 had a specific surface area of CSP/Fe-0 was 6.02 m(2) g(-1), and has a mesoporous structure with more active sites (average pore size is 9.67 nm). The primary mechanism may be the complexation of U(VI) with abundant -OH, -NH2, P=O on the surface of the material and the reduction of nanoscale zero-valent iron. Therefore, it is indicated that the material has good potential in remediation of uranium-contaminated groundwater environment.
作者机构：
[Chen, Pinghu; Liu, Zhen] Shenzhen Univ, Coll Mechatron & Control Engn, Shenzhen 518060, Peoples R China.;[Zhao, Wenguang; Weng, Caifeng] Peking Univ, Sch Adv Mat, Shenzhen Grad Sch, Shenzhen 518055, Peoples R China.;[Zhang, Yun] Hunan Univ Sci & Technol, Sch Mech Engn, Xiangtan 411201, Peoples R China.;[Li, Ruiqing] Cent South Univ, Light Alloys Res Inst, State Key Lab High Performance Complex Mfg, Changsha 410083, Peoples R China.;[Chen, Yong] Univ South China, Coll Mech Engn, Hengyang 421001, Peoples R China.
通讯机构：
[Ruiqing Li] A;[Yong Chen] C;Authors to whom correspondence should be addressed.<&wdkj&>State Key Laboratory of High Performance Complex Manufacturing, Light Alloys Research Institute, Central South University, Changsha 410083, China<&wdkj&>College of Mechanical Engineering, University of South China, Hengyang 421001, China<&wdkj&>Authors to whom correspondence should be addressed.
摘要：
In this work, we fabricated VCp-reinforced iron-based composites (VCFCs) by adjusting the amount of Mn elements and investigated how the concentration of Mn affected the microstructural characteristics of Vanadium carbide (VC) and the texture of the iron matrix, and the influence of microstructure on tribological behaviors should be investigated. We demonstrated that VC changed from thick dendrite crystals (similar to 50 mu m) to tiny equiaxed crystals (similar to 5 mu m). Furthermore, the nucleation mechanism of VC also transformed from homogeneous nucleation to heterogeneous nucleation due to the lower Gibbs free energy of TiC and the tailoring effect of the Mn elements. In addition, gamma-Fe in the FCC structure gradually increased and ascribed an increase of Mn content to the lower transformation temperature of martensite. Furtherly, particulate features and phase constitution could contribute to hardness and wear resistance. Higher hardness and excellent wear resistance occurred in the 3.0 Mn sample, which had a hardness of 869 HV and a wear rate of 1.77 x 10(-6) mm(3) / (N.m). In addition, the adhesive wear could be the main wear mechanism in the 3.0 Mn sample, while the abrasive wear could be in the 4.5 Mn sample.
期刊：
Journal of Radioanalytical and Nuclear Chemistry,2022年331(9):4047-4054 ISSN：0236-5731
通讯作者：
Pingping Huang
作者机构：
[Zeng, Weihao; Shen, Hao; Zhao, Tianji; Huang, Pingping; Sun, Junjie; Wu, Haoyang; Zhang, Jie; Wen, Xinhai] Univ South China, Sch Resource Environm & Safety Engn, Hengyang 421001, Hunan, Peoples R China.;[Huang, Pingping] Hunan Prov Engn Technol Res Ctr Uranium Tailings, Hengyang 421001, Hunan, Peoples R China.;[Hu, Zhitao] Univ South China, Coll Mech Engn, Hengyang 421001, Hunan, Peoples R China.
通讯机构：
[Pingping Huang] S;School of Resource Environment and Safety Engineering, University of South China, Hengyang, China<&wdkj&>Hunan Province Engineering Technology Research Center of Uranium Tailings Treatment, Hengyang, China
通讯机构：
[Chang-jun Qiu] S;School of Resource Environment and Safety Engineering, College of Mechanical Engineering, School of Nuclear Science and Technology, University of South China, Hengyang 421001, China<&wdkj&>Author to whom correspondence should be addressed.
摘要：
The effects of laser parameters on the microstructure and properties of plasma-sprayed yttrium oxide coating on the graphite matrix were investigated. Tensile strength, porosity, roughness, and scratch meter tests were carried out to evaluate the critical load and mechanical properties of the coating after spraying and laser micro-melting. When the porosity and surface roughness of the coating are minimum, the critical load of the coating is 7.85 N higher than that of the spraying surface. After laser micromelting, the crystal phase of Y(2)O(3) coating surface does not change, the crystallinity is improved, and fine grain strengthening occurs. When the laser power density is 75 W/mm(2), the scanning speed is 30 mm/s, and the defocusing distance is 40 mm, the film base bonding performance and wear resistance of the material reach the maximum value. The failure of Y(2)O(3) coating is mainly due to the degradation of mechanical properties such as film base bonding strength, surface porosity, and surface roughness, which leads to the local collapse of the material. The coating after laser micro-melting only presents particle disintegration at the end of the scratch area.
期刊：
Chemical Engineering Journal,2022年446:136877 ISSN：1385-8947
通讯作者：
Li, Zhenye(lizhenye@usc.edu.cn)
作者机构：
[Qian, Xitang; Li, Zhenye] Univ South China, Coll Mech Engn, Hengyang 421001, Peoples R China.;[Ying, Lei; Cao, Yong] South China Univ Technol, Inst Polymer Optoelect Mat & Devices, State Key Lab Luminescent Mat & Devices, Guangzhou 510640, Peoples R China.;[Ying, Lei] South China Inst Collaborat Innovat, Dongguan 523808, Peoples R China.;[Liang, Yingfang] Univ South China, Sch Econ Management & Law, Hengyang 421001, Peoples R China.
通讯机构：
[Zhenye Li] C;[Lei Ying] I;Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, PR China<&wdkj&>South China Institute of Collaborative Innovation, Dongguan 523808, PR China<&wdkj&>College of Mechanical Engineering, University of South China, Hengyang 421001, PR China
关键词：
All-polymer solar cells;Low-cost solvent additive;Non-radiative loss
作者机构：
[Hu, Zhitao] Univ South China, Coll Mech Engn, Hengyang 421001, Peoples R China.;[Huang, Pingping; Huang, De; Lan, Ming] Univ South China, Sch Resource Environm & Safety Engn, Hengyang 421001, Peoples R China.;[Wang, Shenglai] Shandong Univ, State Key Lab Crystal Mat, Jinan 250100, Peoples R China.
通讯机构：
[Shenglai Wang; Pingping Huang] A;Authors to whom correspondence should be addressed.<&wdkj&>School of Resource Environment and Safety Engineering, University of South China, Hengyang 421001, China<&wdkj&>Authors to whom correspondence should be addressed.<&wdkj&>State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China
关键词：
KDP crystals;cracking;mismatch in coefficient of thermal expansion;thermal stress
摘要：
An accelerator driven subcritical system (ADS) is a new nuclear energy system which could not only produce clean energy but also incinerate nuclear waste. In this paper, inherent safety analysis of an ADS is performed with neutronics and thermal-hydraulics coupled code named ARTAP. Five typical accidents are carried out, including the cases of proton beam interruption, transient overpower, reactivity insertion, loss of flow, and loss of heat sink. The transient simulations are performed in the average channel and the hottest channel of the fuel pin in the ADS core. The simulation results for beam interruption show that the highest temperature of the pellet is in the middle of the fuel element in the average channel, while the peak temperature of the cladding is in the top of the fuel element. After the beam is interrupted for 20s, the maximum temperature drops at the fuel center, the cladding inner surface, and the outlet coolant in the hottest channel are 644.46K, 162.27K, and 136.42K respectively. For transient overpower accidents with the increase of beam intensity, the maximum temperature of the fuel and the cladding are below the safety limit. Concerning the reactivity insertion accident, it is found that the ADS has good inherent safety and its margin of criticality safety is large. The calculation results for loss of flow show that the power drop is small due to low sensitivity of the subcritical core to negative reactivity feedback, and the maximum temperature of the cladding reaches 1726K, which means the fuel element would rupture. However, the power and the temperatures of fuel, cladding, and coolant could decrease quickly to the safety level after the proton accelerator is cut off under a loss of flow accident. The results also show that the peak temperature of the cladding is lower than the safety limit under a loss of heat sink accident. The present simulation results reveal that the ADS has a remarkable advantage against severe accidents. It also implies that its inherent safety characteristics could ensure reactor shutdown by cutting off the proton beam after accidents occur.
