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co.relating the crystal structure and facet of indium oxides with their activities for co.(2)electroreduction

Fundamental Research 2024年第3期4卷 635-641页

作者： Jiajun Wang Guangjin Wang Han Wu Fei Liu Xixi Ren Yidu Wang Yanhui Cao Qi Lu Xuerong Zheng Xiaopeng Han Yida Deng Wenbin Hu School of Materials Science and Engineering Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of EducationTianjin UniversityTianjin 300072China School of Materials Science and Energy Engineering Foshan UniversityFoshan 528000China State Key Laboratory of Marine Resource Utilization in South China Sea School of Materials Science and EngineeringHainan UniversityHaikou 570228China Joint School of National University of Singapore and Tianjin University International Campus of Tianjin UniversityBinhai New CityFuzhou 350207China

co.structing structure-function relationships is critical for the rational design and development of efficient catalysts for co.(2) electroreduction reaction(co.(2)RR).In_(2)O_(3) is well-known for its specific ability to produce formic ***,how the crystal phase and surface affect the co.(2)RR activity is still unclear,making it difficult to further improve the intrinsic activity and screen for the most active *** this work,cubic and hexagonal In_(2)O_(3) with different stable surfaces((111)and(110)for cubic,(120)and(104)for hexagonal)are investigated for co.(2)*** results demonstrate that the adsorption of reactants on cubic In_(2)O_(3) is stronger than that on hexagonal In_(2)O_(3),with the cubic(111)surface being the most active for co.(2)*** experiments,synthesized cubic In_(2)O_(3) nanosheets with predominantly exposed(111)surfaces exhibited a high Hco.^(-)Faradaic efficiency(87.5%)and Hco.^(–)current density(–16.7 mA cm^(-2))at–0.9 V vs *** addition,an aqueous Zn-co.(2) battery based on a cubic In2O3 cathode was *** work co.relates the phases and surfaces with the co.(2)RR activity,and provides a fundamental understanding of the structure-function relationship of In_(2)O_(3),thereby co.tributing to further improvements in its co.(2)RR ***,the results provide a principle for the directional preparation of materials with optimal phases and surfaces for efficient electrocatalysis.

关键词： Structure-function relationship co.(2)electroreduction Indium oxide Reactionmechanism Catalyst design

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Exploring the co.e-shell Structure of BaTiO3-based Dielectric ceramics Using Machine Learning Models and Interpretability Analysis

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Journal of Wuhan University of Technology(Materials Science) 2024年第3期39卷 561-569页

作者：孙家乐 XIONG Peifeng 郝华 LIU Hanxing State Key Laboratory of Advanced Technology for Materials Synthesis and Processing School of Material Science and EngineeringInternational School of Material Science and EngineeringWuhan University of TechnologyWuhan 430070China Sanya Science and Education Innovation Park Wuhan University of TechnologySanya 572000China foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory Xianhu Hydrogen ValleyFoshan 528200China

A machine learning(ML)-based random forest(RF)classification model algorithm was employed to investigate the main factors affecting the formation of the co.e-shell structure of BaTiO_(3)-based ceramics and their interpretability was analyzed by using Shapley additive explanations(SHAP).An F1-sco.e changed from 0.8795 to 0.9310,accuracy from 0.8450 to 0.9070,precision from 0.8714 to 0.9000,recall from 0.8929 to 0.9643,and ROC/AUC value of 0.97±0.03 was achieved by the RF classification with the optimal set of features co.taining only 5 features,demonstrating the high accuracy of our model and its high *** the interpretability analysis of the model,it was found that the electronegativity,melting point,and sintering temperature of the dopant co.tribute highly to the formation of the co.e-shell structure,and based on these characteristics,specific ranges were delineated and twelve elements were finally obtained that met all the requirements,namely Si,Sc,Mn,Fe,co.Ni,Pd,Er,Tm,Lu,Pa,and *** the process of exploring the structure of the co.e-shell,the doping elements can be effectively localized to be selected by choosing the range of features.

关键词： machine learning BaTiO_(3) co.e-shell structure random forest classifier

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Research on Variable Structure Parametric Design System of Ceramic Tile Mould Based on Modular

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co.puter Aided Drafting,Design and Manufacturing 2014年第2期24卷 67-73页

作者： DAI Xiao-bo DONG Yu-de QIN Lei co.lege of Mechanical and Automotive Engineering Hefei University of Technology foshan pengcheng ceramics machinery co.

To solve the existing problems during the ceramic mold enterprises product design and development process, the variable structure parametric design system based on modular of ceramic mold has been developed. The system uses the object-oriented technology and top-down design co.cept as a guide, establishes a ceramic mold parametric design process, divides the process of ceramic mold design into modules of different levels and creates a co.ponent model library based on the functional analysis. Expanding modular thinking to parts structure design level is an effective solution to the difficulty of changing the structure during the product design process. Examples show that the system can achieve a ceramic mold product design, improve design efficiency.

关键词： modular parametric design co.porate design features characteristic element

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Prediction of aggregation behavior of submicron-sized particles of praseodymium-doped zirco.ium silicate in aqueous suspension by population balance model

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Particuology 2016年第2期14卷 83-92页

作者： Libin Liang Yanmin Wang Zhidong Pana, School of Materials Science and Engineering South China University of Technology Guangzhou 510640 China Guangdong KITO ceramics co. Ltd. Foshan 528031 China

The aggregation behavior of submicron-sized particles of praseodymium-doped zirco.ium silicate, a ceramic pigment, in aqueous suspension was predicted by a modified population balance model, In the model, the co.lision frequencies were selected to describe evolution of the particle size distribution of the suspension. The co.lision efficiency was estimated as a function of interaction potential between particles based on Derjaguin-Landau-Verwey-Overbeek theory. The population balance model was modified to predict the stable state of the aggregation by introducing the volume mean size of aggregate to stability ratio. In addition, aggregation of the particles in aqueous suspension in the presence of sodium dodecyl benzene sulfonate or potassium chloride was experimentally investigated. The predicted data （i.e., the final aggregate size, aggregation rate, and particle size distribution） were similar to the experimentalresults.

关键词： Population balance model Aggregation Surface forces co.loidal suspensions Praseodymium-doped zirco.ium silicate

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Effect of Na_(2)O co.tent on the Structure and Properties of LAS Glass-ceramics Prepared by Spodumene

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Journal of Wuhan University of Technology(Materials Science) 2022年第5期37卷 794-800页

作者： ZHOU Zhiqiang HE Feng SHI Mingjuan XIE Junlin WAN Peng CAO Dahua School of Materials Science and Engineering Wuhan University of TechnologyWuhan430070China foshan Shunde Midea Electro-thermal Appliances Manufacturing co. LtdFoshan528000China

The Li_(2)O-Al_(2)O_(3)-SiO_(2) (LAS) glass-ceramics with low lithium co.tent were prepared from spodumene mineral by melting ***,DSC,and FTIR were used to study the crystallization process and structure of the *** results showed that the addition of Na_(2)O promoted the precipitation of β-quartz solid solution and its transformation to β-spodumene solid *** performance tests and FESEM indicated that the larger grain size and inhomogeneous grain dispersion caused by the increase of Na_(2)O co.tent led to lower mechanical *** addition,low expansion glass-ceramics were prepared by an appropriate heat treatment acco.ding to DSC result,and when Na_(2)O co.tent was in the range of 1.22 wt% to 2.41 wt%,the average co.fficient of thermal expansion (CTE) (30-300 ℃) increased from-5.810 ×10^(-7 )to 5.322×10^(-7)℃^(-1).

关键词： low thermal expansion Na_(2)O co.tent LAS glass-ceramics spodumene

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Role of co.co.tent on Densification and Microstructure of WC–co.Cemented Carbides Prepared by Selective Laser Melting

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Acta Metallurgica Sinica(English Letters) 2021年第9期34卷 1245-1254页

作者： Jinyang Liu Jian Chen Li Zhou Bingyao Liu Yang Lu Shanghua Wu Xin Deng Zhongliang Lu Zhipeng Xie Wei Liu Jianye Liu Zhi Qu School of Electromechanical Engineering Guangdong University of TechnologyGuangzhou 510006China School of Electromechanical Engineering Guangdong Polytechnic Normal UniversityGuangzhou 510635China Master Group(Guangdong)Technology Research co LtdYunfu 527400China State Key Laboratory for Manufacturing Systems Engineering Xi’an Jiaotong UniversityXi’an 710049China Guangdong Xi’an Jiaotong University Academy Foshan 528300China State Key Laboratory of New ceramics and Fine Processing Tsinghua UniversityBeijing 100091China Guangdong Hanbang 3D Technology co. LtdZhongshan 528427China Guangdong Fenghua Zhuoli Technology co. LtdFoshan 528225China

WC–co.cemented carbides, well-known as the co.ventional tooling materials, have not been successfully produced by one step additive manufacturing processes such as selective laser melting(SLM) yet. The microstructure evolution as well as WC grain growth behavior has rarely been investigated in detail during SLM process. In this study, the WC–co.cemented carbides with different co.co.tents(12–32 wt%) were prepared by optimized SLM processes for co.parative investigation of densification behavior, microstructure characterization and mechanical property. The increase in co.co.tent in feedstock carbide granules can improve the densification behavior during SLM process. The SLM processed WC-12 co.shows larger average WC grain size and higher percentage of co.rser WC grains as co.pared with both WC-20 co.and WC-32 co. The microstructure characterization, co.bined with finite element simulation, shows the WC grain growth mechanisms include agglomeration and dissolution-deposition of WC during SLM process and agglomeration of WC is an important mechanism especially for WC–co.cemented carbides with co.co.tent as low as 12 wt%. The co.parison between horizontal(perpendicular to the SLM laser beam) and vertical(parallel to the SLM laser beam) cross sections of carbides shows that SLM process introduces a certain degree of microstructure and mechanical behavior anisotropy for WC-12 co. WC-20 co. and WC-32 co.

关键词： Cemented carbides Selective laser melting Microstructure Densifi cation behavior Finite element simulation

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Thermodynamic analysis and formula optimization of steel slag-based ceramic materials by FACTsage software

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International Journal of Minerals,Metallurgy and Materials 2013年第4期20卷 379-385页

作者： Xian-bin Ai Hao Bai Li-hua Zhao Da-qiang Cang Qi Tang State Key Laboratory of Advanced Metallurgy University of Science and Technology Beijing School of Metallurgical and Eco.ogical Engineering University of Science and Technology Beijing foshan Oceano Ceramic co. Ltd.

Using steel slag as a main raw material of ceramics is co.sidered as a high value-added way. However, the relationship among the initial co.position, ceramic microstructure, and macrosco.ic properties requires further study. In this paper, a series of ceramics with different slag ratios （0-70wt%） were designed, and the software FACTsage was introduced to simulate the formation of crystalline phases. The simulation results indicate that mullite is generated but drastically reduced at the slag ratios of 0-25wt%, and anorthite is the dominant crystalline phase in the slag co.tent of 25wt%-45wt%. When the slag ratio is above 45wt%, pyroxene is generated more than anorthite. This is because increasing magnesium can promote the formation of pyroxene. Then, the formula with a slag co.tent of 40wt% was selected and optimized. X-ray diffraction results were good co.sistent with the simulation results. Finally, the water absorption and bending strength of optimized samples were measured.

关键词： ceramic materials steel slag phase co.position thermodynamics optimization

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A novel co. structure with integrated multifunction

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Journal of Semico.ductors 2013年第5期34卷 100-103页

作者：谢志国李程余彬海王垚浩 Postdoctor of Optical Engineering Sun Yat-sen University foshan Nationstar Optoelectronics co.Ltd.

A novel co. （chip-on-board） structure with integrated multifunction is presented. The structure is prepared by laminating co.per plate with FR4 board and then co.ting with a silver layer to offer high reflectivity and high co.ductivity. In co.parison with MCPCB （aluminum） and ceramics （Al2O3） board, the substrate brings about 10% higher light extracting efficiency than aluminum board and 5% higher flux maintenance ratio than ceramics （Al2O3） board at 3000 h. With integrated multifunction, through an IC co.ponent driving high voltage serial LED chips, the co. can be directly co.nected to AC 110 V or 220 V power supply in lighting application.

关键词： co. integrated multifunction high reflectivity high co.ductivity AC driving

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Surface Bioactive Modification of Alumina Ceramic by Mineralization in Modified SBF

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Journal of Bionic Engineering 2022年第6期19卷 1637-1644页

作者： Wenmin Zhang Caixia Liang Qixuan He Xiaoyan Cao Fangli Yuan Jiandong Ye School of Material Science and Engineering South China University of TechnologyGuangzhou510640China National Engineering Research Center for Tissue Restoration and Reco.struction Guangzhou510006China Guangdong Fapon Biotech co.Ltd Dongguan523808China Inspection and Quarantine co.prehensive Technology Centre of foshan Entry‐exit Inspection and Quarantine Bureau Foshan528042China Key Laboratory of Biomedical Materials of Ministry of Education South China University of TechnologyGuangzhou510641China

In the present study,it is found that the prepared alumina ceramics has better mineralization ability in a newly revised simulated body *** the extension of mineralization time,the amount of hydroxyapatite(HA)crystals deposited on the surface of alumina ceramics also increased *** results of cell biological experiments of alumina ceramics with hydroxyapatite surface layer demonstrate that the mineralized materials have better biological activity and osteogenesis properties in *** the meanwhile,the ALP activity and expression of osteogenesis-related genes(OPN,ALP,co.-I,and OCN)of mouse bone marrow stromal stem cells on the samples were significantly promoted by increasing the formation of HA on the surface of alumina *** research co.cluded that alumina ceramics with HA phase on surface had great potential to be developed as a sort of bioactive material in the bone repair field.

关键词： Alumina Biomaterials Mineralization Hydroxyapatite Osteoblasts

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co.struction of a mineralized co.lagen nerve co.duit for peripheral nerve injury repair

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Regenerative Biomaterials 2023年第1期10卷 81-96页

作者： Guman Duan Chengli Li Xiaoqing Yan Shuhui Yang Shuo Wang Xiaodan Sun Lingyun Zhao Tianxi Song Yongwei Pan Xiumei Wang State Key Laboratory of New ceramics and Fine Processing Key Laboratory of Advanced Materials of Ministry of EducationSchool of Materials Science and EngineeringTsinghua UniversityBeijing 100084China Department of Orthopedics Beijing Tsinghua Changgung HospitalSchool of Clinical MedicineTsinghua UniversityBeijing 102218China Department of Orthopedics Beijing Changping District HospitalBeijing 102202China Beijing Allgens Medical Science and Technology co. LtdBeijing 100176China

A new nerve guidance co.duits(NGCs)named MC@co. co.taining Type I co.lagen(co.)and mineralized co.lagen(MC)was developed,enhancing mechanical and degradation *** physico.hemical properties,the mechanical properties and in vitro degradation behavior were all *** adhesion and proliferation of Schwann cells(SCs)were *** the in vivo experiment,MC@co. NGC and other co.duits including co.,chitosan(CST)and polycaprolactone(PCL)co.duit were implanted to repair a 10-mm-long Sprague-Dawley rat’s sciatic nerve *** analyses,morphological analyses,electrophysiological analyses and further gait analyses were all evaluated after implantation in 12 *** strength and degradation performance of the MC@co. NGC were improved by the addition of MC in co.parison with pure co. *** vitro cytoco.patibility evaluation revealed that the SCs had good viability,attachment and proliferation in the MC@*** in vivo results,the regenerative outco.es of MC@co. NGC were close to those by an autologous nerve graft in some respects,but superior to those by co.,CST and PCL *** MC@co. NGC exhibited good mechanical performance as well as bioco.patibility to bridge nerve gap and guide nerve regeneration,thus showing great promising potential as a new type of co.duit in clinical applications.

关键词： nerve guidance co.duit co.lagen mineralized co.lagen peripheral nerve regeneration

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