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典型文献
Boron-modified perhydropolysilazane towards facile synthesis of amorphous SiBN ceramic with excellent thermal stability
文献摘要：
SiBN ceramics are widely considered to be the most promising material for microwave-transparent applications in harsh environments owing to its excellent thermal stability and low dielectric constant.This work focuses on the synthesis and ceramization of single-source precursors for the preparation of SiBN ceramics as well as the investigation of the corresponding microstructural evolution at high temperatures including molecular dynamic simulations.Carbon-and chlorine-free perhydropolysilazanes were reacted with borane dimethyl sulfide complex at different molar ratios to synthesize single-source precursors,which were subsequently pyrolyzed and annealed under N2 atmosphere(without ammonolysis)to prepare SiBN ceramics at 1100,1200,and 1300℃with high ceramic yield in contrast to previously widely-used ammonolysis synthesis process.The obtained amorphous SiBN ceramics were shown to have remarkably improved thermal stability and oxidation resistance compared to amorphous silicon nitride.Particularly,the experimental results have been combined with molecular dynamics simulation to further study the amorphous structure of SiBN and the atomic-scale diffusion behavior of Si,B,and N at 1300℃.Incorporation of boron into the Si-N network is found to suppress the crystallization of the formed amorphous silicon nitride and hence improves its thermal stability in N2 atmosphere.
文献关键词：
中图分类号：
[1] 医药、卫生（R） / 基础医学（R3） / 病理学（R36） / 病理过程（R364）
[2] 数理科学和化学（O） / 力学（O3） / 振动理论（O32） / 非线性振动（O322）
[3] 医药、卫生（R） / 神经病学与精神病学（R74） / 神经病学（R741）
作者姓名：
Ying ZHAN;Wei LI;Tianshu JIANG;Claudia FASEL;Emmanuel Ⅲ RICOHERMOSO;Jan BERNAUER;Zhaoju YU;Zhenghao WU;Florian MüLLER-PLATHE;Leopoldo MOLINA-LUNA;Ralf GROTTENMüLLER;Ralf RIEDEL
作者机构：
Department of Materials and Earth Sciences,Technical University of Darmstadt,D-64287 Darmstadt,Germany;College of Materials,Key Laboratory of High Performance Ceramic Fibers(Xiamen University),Ministry of Education,Xiamen 361005,China;Eduard-Zintl-InstitutfiirAnorganischeundPhysikalische Chemie,Technical University of Darmstadt,D-64287 Darmstadt,Germany;Merck KGaA,Performance Materials,D-64293,Darmstadt,Germany
文献出处：
先进陶瓷（英文版）
引用格式：
[1]Ying ZHAN;Wei LI;Tianshu JIANG;Claudia FASEL;Emmanuel Ⅲ RICOHERMOSO;Jan BERNAUER;Zhaoju YU;Zhenghao WU;Florian MüLLER-PLATHE;Leopoldo MOLINA-LUNA;Ralf GROTTENMüLLER;Ralf RIEDEL-.Boron-modified perhydropolysilazane towards facile synthesis of amorphous SiBN ceramic with excellent thermal stability)[J].先进陶瓷（英文版）,2022(07):1104-1116
A类：
perhydropolysilazane,SiBN,ceramization,perhydropolysilazanes,ammonolysis
B类：
Boron,modified,towards,facile,synthesis,amorphous,excellent,thermal,stability,ceramics,widely,considered,most,promising,material,microwave,transparent,applications,harsh,environments,owing,its,low,dielectric,constant,This,focuses,single,source,precursors,preparation,well,investigation,corresponding,microstructural,evolution,high,temperatures,including,molecular,simulations,Carbon,chlorine,free,were,reacted,borane,dimethyl,sulfide,complex,different,molar,ratios,synthesize,which,subsequently,pyrolyzed,annealed,under,N2,atmosphere,without,prepare,yield,contrast,previously,used,process,obtained,shown,have,remarkably,improved,oxidation,resistance,compared,silicon,nitride,Particularly,experimental,results,been,combined,dynamics,further,study,structure,atomic,scale,diffusion,behavior,Incorporation,boron,into,network,found,suppress,crystallization,formed,hence,improves
AB值：
0.534644
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