典型文献
Anisotropic,biomorphic cellular Si3N4 ceramics with directional well-aligned nanowhisker arrays based on wood-mimetic architectures
文献摘要：
Inspired by the transport behavior of water and ions through the aligned channels in trees,we demonstrate a facile,scalable approach for constructing biomorphic cellular Si3N4 ceramic frameworks with well-aligned nanowhisker arrays on the surface of directionally aligned microchannel alignments.Through a facile Y(NO3)3 solution infiltration into wood-derived carbon preforms and subsequent heat treatment,we can faultlessly duplicate the anisotropic wood architectures into free-standing bulk porous Si3N4 ceramics.Firstly,α-Si3N4 microchannels were synthesized on the surface of CB-templates via carbothermal reduction nitridation(CRN).And then,homogeneous distributed Y-Si-O-N liquid phase on the walls of microchannel facilitated the anisotropic β-Si3N4 grain growth to form nanowhisker arrays.The dense aligned microchannels with low-tortuosity enable excellent load carrying capacity and thermal conduction through the entire materials.As a result,the porous Si3N4 ceramics exhibited an outstanding thermal conductivity(TC,kR ≈6.26 W·m-1·K-1),a superior flexural strength(σL ≈ 29.4 MPa),and a relative high anisotropic ratio of TC(kR/kL=4.1).The orientation dependence of the microstructure-property relations may offer a promising perspective for the fabrication of multifunctional ceramics.
文献关键词：
中图分类号：
作者姓名：
Songsong XU;Xiaonan ZHOU;Qiang ZHI;Junjie GAO;Liucheng HAO;Zhongqi SHI;Bo WANG;Jianfeng YANG;Kozo ISHIZAKI
作者机构：
State Key Laboratory for Mechanical Behavior of Materials,Xi'an Jiaotong University,Xi'an 710049,China;High Voltage Switchgear Insulation Materials Laboratory of State Grid,Pinggao Group Co.,Ltd.,Pingdingshan 467001,China;Department of Mechanical Engineering,Nagaoka University of Technology,Nagaoka 940-2188,Japan
文献出处：
引用格式：
[1]Songsong XU;Xiaonan ZHOU;Qiang ZHI;Junjie GAO;Liucheng HAO;Zhongqi SHI;Bo WANG;Jianfeng YANG;Kozo ISHIZAKI-.Anisotropic,biomorphic cellular Si3N4 ceramics with directional well-aligned nanowhisker arrays based on wood-mimetic architectures)[J].先进陶瓷（英文版）,2022(04):656-664
A类：
biomorphic,nanowhisker,faultlessly,kR
B类：
Anisotropic,cellular,Si3N4,ceramics,well,aligned,arrays,wood,mimetic,architectures,Inspired,by,transport,behavior,water,through,trees,demonstrate,facile,scalable,approach,constructing,frameworks,surface,directionally,alignments,Through,NO3,solution,infiltration,into,derived,carbon,preforms,subsequent,heat,treatment,can,duplicate,anisotropic,free,bulk,porous,Firstly,microchannels,were,synthesized,CB,templates,via,carbothermal,reduction,nitridation,CRN,And,then,homogeneous,distributed,liquid,phase,walls,facilitated,grain,growth,dense,low,tortuosity,enable,excellent,load,carrying,capacity,conduction,entire,materials,result,exhibited,outstanding,conductivity,superior,flexural,strength,relative,high,kL,orientation,dependence,microstructure,property,relations,may,offer,promising,perspective,fabrication,multifunctional
AB值：
0.555436
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