典型文献
Single source precursor derived SiBCNHf ceramic with enhanced high-temperature microwave absorption and antioxidation
文献摘要：
Electromagnetic(EM)wave-absorbing materials with high-temperature-resistance are urgently desirable to eliminate EM interference in extreme conditions.Precursor derived ceramics(PDC)route is being evolved as an effective strategy to solve the puzzle.Herein,a single source hyperbranched polyborosi-lazane precursor containing hafnium(hb-PBSZ-Hf)is introduced and the SiBCNHf ceramic is obtained by further pyrolysis.The micro-sized tissues including HfC,SiC,HfB2 nanocrystals and segregated carbons are in situ generated during annealing which not only increase EM wave absorption ability(minimum re-flection coefficient(RCmin)is-56.71 dB with a thickness of 2.5 mm,effective absorption bandwidth(EAB)is 3.4 GHz),but also improve antioxidation property(less than 2 wt.％mass fluctuation at 1400℃in air).Theoretical simulation of complex permittivity suggests that SiBCNHf ceramic has an RCmin of less than-5 dB for the whole X-band even at 1100℃.Such SiBCNHf ceramic with superior high-temperature-resistance and antioxidation performance derived from single source precursors possesses great potential for EM wave absorbing coatings in high-temperature and harsh environments.
文献关键词：
中图分类号：
作者姓名：
Yan Song;Ziyu Liu;Xicheng Zhang;Runqiu Zhu;Youwei Zhang;Pinggui Liu;Lihua He;Jie Kong
作者机构：
MOE Key Laboratory of Space Applied Physics and Chemistry,School of Chemistry and Chemical Engineering,Northwestern Polytechnical University,Xi'an 710072,China;AECC Beijing Institute of Aeronautical Materials,Beijing 100095,China
文献出处：
引用格式：
[1]Yan Song;Ziyu Liu;Xicheng Zhang;Runqiu Zhu;Youwei Zhang;Pinggui Liu;Lihua He;Jie Kong-.Single source precursor derived SiBCNHf ceramic with enhanced high-temperature microwave absorption and antioxidation)[J].材料科学技术（英文版）,2022(31):215-227
A类：
SiBCNHf,polyborosi,lazane,PBSZ,RCmin
B类：
Single,source,derived,enhanced,high,temperature,microwave,absorption,antioxidation,Electromagnetic,EM,absorbing,materials,resistance,are,urgently,desirable,eliminate,interference,extreme,conditions,Precursor,ceramics,PDC,route,being,evolved,effective,strategy,solve,puzzle,Herein,single,hyperbranched,containing,hafnium,hb,introduced,obtained,by,further,pyrolysis,sized,tissues,including,HfC,SiC,HfB2,nanocrystals,segregated,carbons,situ,generated,during,annealing,which,not,only,increase,ability,minimum,flection,coefficient,dB,thickness,bandwidth,EAB,GHz,but,also,improve,property,less,than,wt,mass,fluctuation,air,Theoretical,simulation,complex,permittivity,suggests,that,has,whole,even,Such,superior,performance,from,precursors,possesses,great,potential,coatings,harsh,environments
AB值：
0.582741
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机标中图分类号，由域田数据科技根据网络公开资料自动分析生成，仅供学习研究参考。
