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Bioinspired Additive Manufacturing of Hierarchical Materials: From Biostructures to functions

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Research 2024年第1期2023卷 533-559页

作者： Jingjiang Wei Fei Pan Hang Ping Kun Yang Yanqing Wang Qingyuan Wang zhengyi fu Institute for Advanced Materials Deformation and Damage from Multi-Scale Institute for Advanced StudyChengdu UniversityChengdu 610106P.R.China Department of Chemistry University of BaselBasel 4058Switzerland State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070P.R.China College of Polymer Science and Engineering Sichuan UniversityChengdu 610065P.R.China

Throughout billions of years,biological systems have evolved sophisticated,multiscale hierarchical structures to adapt to changing *** are synthesized under mild conditions through a bottom-up self-assembly process,utilizing substances from the surrounding environment,and meanwhile are regulated by genes and *** manufacturing,which mimics this natural process,provides a promising approach to developing new materials with advantageous properties similar to natural biological *** review presents an overview of natural biomaterials,emphasizing their chemical and structural compositions at various scales,from the nanoscale to the macroscale,and the key mechanisms underlying their ***,this review describes the designs,preparations,and applications of bioinspired multifunctional materials produced through additive manufacturing at different scales,including nano,micro,micro-macro,and macro levels.

关键词： materials structures utilizing

TiB-Ti周期序构复合材料设计、制备及性能研究

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无机材料学报 2024年第6期39卷 662-670页

作者：孙海洋季伟王为民傅正义武汉理工大学材料复合新技术国家重点实验室武汉430070

高性能结构材料部件在航空航天、交通汽车、电子信息、冶金等领域具有重要的应用价值,得到了广泛研究。增强结构材料部件整体性能的方法主要包括材料本征性能提升和结构复合设计优化,但提高单一结构材料的本征力学性能的研究已接近极限... 详细信息

高性能结构材料部件在航空航天、交通汽车、电子信息、冶金等领域具有重要的应用价值,得到了广泛研究。增强结构材料部件整体性能的方法主要包括材料本征性能提升和结构复合设计优化,但提高单一结构材料的本征力学性能的研究已接近极限。本研究旨在提出周期序构结构材料的理念,并采用一体化烧结制备出整体性能更好的结构复合材料,从而探索高性能结构复合材料发展的新范式。通过周期序构化的设计,构建了兼具陶瓷高硬度和金属强韧性的TiB-Ti功能单元,设计制备了不同周期序构模式的TiB-Ti高性能结构复合材料。在此基础上,对这些结构进行了力学性能研究,并通过分析其断裂模式来探究不同序构模式对材料整体性能的影响。结果表明,周期序构化可以通过改变材料宏观断裂模式和应力分散特性来提高材料的整体性能。这一研究新范式对其他结构复合材料的结构设计和性能突破具有指导和借鉴意义。对周期序构模式的复杂化探索,对周期序构结构材料的应用场景探索和其他性能测试研究也将是未来需要重点关注的问题。

关键词：复合材料周期序构力学性能结构设计

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4D printing for future manufacturing

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Science China Materials 2023年第11期66卷 4517-4518页

作者： Chaolin Tan Ji Zou zhengyi fu Singapore Institute of Manufacturing Technology(SIMTech) Agency for ScienceTechnology and Research(A*STAR)Singapore 636732Singapore State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China

Additive manufacturing(AM),also called three-dimensional(3D)printing,offers disruptive design freedom and manufacturing flexibility due to the layer-wise incremental formation manner of *** in AM techniques provide unique advantages and feasibilities for overcoming challenges arising from fabricating parts with complexities in geometry,materials,and properties.

关键词： printing properties freedom

AgPd双金属纳米空心球的合成及其催化性能

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无机化学学报 2024年第5期40卷 963-971页

作者：张桂敏马文娟丁文强傅正义武汉理工大学化学化工与生命科学学院武汉430070 武汉理工大学材料复合新技术国家重点实验室武汉430070

以Ag纳米颗粒为牺牲模板,H_(2)PdCl_(4)为前驱体,抗坏血酸为还原剂,聚乙烯吡咯烷酮为表面活性剂,在70℃下采用电偶置换法结合还原法制备出AgPd双金属纳米空心球。采用紫外可见光谱、粉末X射线衍射、透射电镜结合能量色散等手段对由不同... 详细信息

以Ag纳米颗粒为牺牲模板,H_(2)PdCl_(4)为前驱体,抗坏血酸为还原剂,聚乙烯吡咯烷酮为表面活性剂,在70℃下采用电偶置换法结合还原法制备出AgPd双金属纳米空心球。采用紫外可见光谱、粉末X射线衍射、透射电镜结合能量色散等手段对由不同体积的0.01 mol·L^(-1)H_(2)PdCl_(4)溶液制备的产物进行结构表征。结果表明,随着H_(2)PdCl_(4)溶液体积的增加,产物的空心化程度逐渐升高,晶粒的尺寸逐渐增大。当H_(2)PdCl_(4)溶液体积为120μL时,合成的AgPd双金属纳米空心球组成和结构较为均匀,其粒径约为25 nm,壳层厚度2~3 nm。双金属中,由于Ag和Pd电负性的差异,电子从Ag转移到了Pd,使Pd表面出现电子富集区,显著提高了其催化效率。将所合成的AgPd双金属以及纯金属Ag和Pd作为催化剂,分别用于硼氢化钠催化还原4-硝基苯酚的反应,发现AgPd双金属的催化性能远高于纯金属Ag和Pd,其中AgPd-120纳米空心球(H_(2)PdCl_(4)溶液体积120μL)作催化剂时的反应速率常数最高,是同等尺寸纯Ag纳米球的24.0倍,纯Pd纳米立方体的14.7倍。

关键词： AgPd双金属纳米空心球电偶置换 4-硝基苯酚催化还原

Microstructure and Mechanical Property of (TiNbTaZrHf)C Synthesized by In-situ Reaction

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Journal of Wuhan University of Technology(Materials Science) 2022年第2期37卷 177-183页

作者：周庆张金咏 fu zhengyi WANG Dangqiang State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China

The(TiNbTaZrHf)C high entropy carbide(HEC)was successfully synthesized by complete commercial transition metal powders,obtained fine sintered bulks without additives by in-situ reaction element synthesis method.(TiNbTaZrHf)C bulk shows a face centered cubic rock salt structure with homogeneous single-phase FCC structure in composition and *** optimum sintering temperature is about 1900℃at which the best mechanical properties are *** mechanical properties of(TiNbTaZrHf)C ceramic block are better than those of binary transition metal carbides,and it has obvious high entropy *** a small amount of Al as sintering additive,the mechanical properties of(TiNbTaZrHf)C ceramics continue to improve,the bending strength of the samples at each temperature is increased by at least 38%,and the highest is 486 *** elastic modulus and hardness of the sample at 1900℃are also slightly increased by 4%and 14%,*** above conclusions illustrate that the properties of high entropy ceramics are greatly improved by in-situ reaction sintering.

关键词： high entropy carbide in-situ reaction microstructure mechanical property sintering additive

Titanium nitrides as novel reactants for in-situ synthesis of TiB_(2)-based composites with improved properties

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Journal of Materials Science & Technology 2023年第14期145卷 48-55页

作者： Ji Zou Huayue Liang Jingjing Liu Weimin Wang Fan Zhang Wei Ji zhengyi fu State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China Hubei Longzhong Laboratory Xiangyang 441000China School of Materials Science and Engineering Wuhan University of TechnologyWuhan 430070China

A novel in-situ reactive approach based on the reactions among TiN,aluminum and boron has been developed to synthesize TiB_(2)-based composites including TiB_(2)-h BN(TB)and TiB_(2)-h BN-AlN(TBA).fully dense ceramics with fine-grained microstructure were successfully obtained via spark plasma sintering at 1850℃/60 MPa/5 *** analysis suggests h BN flakes were homogenously distributed in the TiB_(2)*** AlN,however,they were elongated into plate-like grains during sintering,in which lots of defects in terms of stacking faults and twinning structures were *** mechanical and thermophysical properties of as-sintered ceramics were comprehensively investigated and ***-corporating AlN significantly improved the flexure strength,hardness,fracture toughness and thermal conductivity of TiB_(2)-h BN *** electrical conductivity of TB(3.06×10^(6)S/m)is larger than that of TBA(2.35×10^(6)S/m)at room temperature,but the value(6×10^(5)S/m)was lower than that of TBA(6.9×10^(5)S/m)at 1173 *** on the measurement of electrical and thermal conductivity,electron and phonon contributions to thermal conductivities of TB and TBA were calculated and their temperature dependences were illustrated.

关键词： Borides Microstructure Spark plasma sintering Mechanical property Thermo-physics property

Nonclassical crystallization of zinc carbonate hydroxide hydrate nanofilm mediated by calcium ions

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Progress in Natural Science:Materials International 2022年第5期32卷 579-585页

作者： Qihang Wang Bicheng Yuan Wenduo Gao Huifeng Hu Meng Cai Zhaoyong Zou zhengyi fu State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Hubei Longzhong Laboratory

To satisfy the demand of zinc oxide(ZnO) with advanced muti-functional properties, significant efforts have been made in synthesizing ZnO with various structure and morphology. In particular, hydrothermal method has attracted considerable attentions, in which Zn4CO3(OH)6·H2O(ZCHH) is commonly found as a metastable precursor. However, the formation and crystallization mechanisms of ZCHH are still lacking and urgently needed. In the present study, the crystallization pathway of ZCHH was systematically investigated, and the results demonstrate that the amorphous zinc carbonate(AZC) was an even more unstable precursor. AZC nanoparticles typically aggregated to form one-dimensional(1D) ZCHH nanorods, however, two-dimensional(2D) ZCHH nanofilms were obtained in the presence of a certain concentration of calcium ion. The results suggest that calcium ions could promote the partial dissolution of AZC and facilitate the aggregation of AZC nanoparticles to form crystalline nanofilm. Moreover, 2D ZnO nanofilms could be obtained by heat treatment of the ZCHH nanofilms. The calcium ion mediated nonclassical crystallization pathway provides inspiration for fabrication of ZnO with controlled morphology and offers new opportunities for inorganic regulated material synthesis.

关键词： Zn 4 CO 3 (OH) 6 ·H 2 O Calcium ion Crystallization ZnO nanofilm

Grain-refining fabrication of nanocrystalline(La_(0.2)Nd_(0.2)Sm_(0.2)Gd_(0.2)Eu_(0.2))_(2)Zr_(2)O_(7)high-entropy ceramics by ultra-high pressure sintering

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Journal of Materials Science & Technology 2023年第36期167卷 205-212页

作者： Zhangtian Wu Wei Ji Jinyong Zhang Yanan Yuan Ji Zou Weimin Wang zhengyi fu State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China Hubei Longzhong Laboratory Wuhan University of Technology Xiangyang Demonstration ZoneXiangyang 441000China

As an important A_(2)B_(2)O_(7)-type ceramic,(La_(0.2)Nd_(0.2)Sm_(0.2)Gd_(0.2)Eu_(0.2))_(2)Zr_(2)O_(7)high-entropy pyrochlore pos-sesses promising properties such as high melting point,high chemical durability,and low thermal ***,the low sintering ability limits its application in thermal barrier coating and radioactive waste *** usually needs long-term high-temperature soaking to achieve full density,but with inevitable grain *** this work,dense and grain-refined nanocrystalline(La_(0.2)Nd_(0.2)Sm_(0.2)Gd_(0.2)Eu_(0.2))_(2)Zr_(2)O_(7)ceramics were prepared with ultra-high pressure sintering(UHPS)method under 10 GPa at a low temperature of 800℃.The densification behavior,microstructure evo-lution,and properties of the UHPS-ed samples were then *** grain size of as-prepared(La_(0.2)Nd_(0.2)Sm_(0.2)Gd_(0.2)Eu_(0.2))_(2)Zr_(2)O_(7)ceramic was only 151 nm,which is 40%smaller than that of raw *** addition,it exhibited advantageous properties including both high hardness and aqueous *** deformation under ultra-high pressure was believed as the dominant densification mechanism responsible for grain refinement and property improvement.

关键词： High-entropy ceramics Ultra-high pressure sintering Grain refining Nanocrystalline Plastic deformation

Bioprocess inspired formation of calcite mesocrystals by cation-mediated particle attachment mechanism

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National Science Review 2023年第4期10卷 159-168页

作者： Qihang Wang Bicheng Yuan Wenyang Huang Hang Ping Jingjing Xie Kun Wang Weimin Wang Zhaoyong Zou zhengyi fu State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Hubei Longzhong Laboratory

Calcite mesocrystals were proposed, and have been widely reported, to form in the presence of polymer additives via oriented assembly of nanoparticles. However, the formation mechanism and the role of polymer additives remain elusive. Here, inspired by the biomineralization process of sea urchin spine comprising magnesium calcite mesocrystals, we show that calcite mesocrystals could also be obtained via atachment of amorphous calcium carbonate(ACC) nanoparticles in the presence of inorganic zinc ***, we demonstrate that zinc ions can induce the formation of temporarily stabilized amorphous nanoparticles of less than 20 nm at a significantly lower calcium carbonate concentration as compared to pure solution, which is energetically beneficial for the atachment and occlusion during calcite growth. The cation-mediated particle atachment crystallization significantly improves our understanding of mesocrystal formation mechanisms in biomineralization and offers new opportunities to bioprocess inspired inorganic ions regulated materials fabrication.

关键词： nonclassical crystallization mesocrystal calcium carbonate zinc ion particle attachment