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chemical Research in chinese Universities 1998年第2期14卷 86-90页

作者： WU cheng-pei PAN cai-yuan Toshiyuki Uryu Department of Polymer science&engineering University ofScience&Technology of ChinaHefei230026 institute of Industrial science University of TokyoTokyo106Japan)

Two kinds of 1,4-anhydroribose derivatives,1,4-anhydro-2,3-O-benzylidene-T-D-ribopyranose(ABRP)and 1,4-anhydro-2,3-O-isopropylidene-T-D-ribopyranose(AIRP)were prepared from*** ringopening copolymerizations of ABRP and AIRP in various feed ratios were carried out with Sbcl_5 and BF_3OEt_2 as catalyst at low *** copolymer structure was characterized by means of ^(1)h,^(13)c NMR spectroscopy and specific *** Sbcl_(5)was used as catalyst,the copolymer obtained had completely 1,4-β-pyranosidic structure,i.e.,cellulosetype ***,when BF_(3)OEt_2 was used as catalyst,the copolymer had a mixed structure of furanosidic and pyranosidic units.

关键词： 1 4-anhydroribose derivative ringopening copolymerization cellulosetype polysac.h.ride

Influence of Mo on growth and coarsening of Nanometer-sized carbides in low-alloy Ferritic Steels containing Ti

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Journal of Iron and Steel Research International 2014年第9期21卷 878-885页

作者： Bin-hao hU Qing-wu cai hui-bin WU engineering Research institute University of Science and Technology Beijing

By optical microscopy, transmission electron microscopy and energy dispersive spectroscopy, the changes with aging time in size, composition and distribution of nanometer-sized （Ti, Mo）c precipitated in Ti-Mo low-alloy ferritc steel have been studied in comparison with that of nanometer-sized Tic precipitated in Ti low-alloy ferritc steel. It was found that the growth rate of （Ti,Mo）c in Ti-Mo steel was less than that of Tic in Ti steel. Nanometer- sized carbides formed at 650 ~c （or 550 ~c） for 55 h were at transitional stage from growth to coarsening. When aging time reaches 55 h, the coarsening rates of nanometer-sized carbides in Ti and Ti-Mo steel tend to be the same and in- variable. The influence of Mo on growth and coarsening of nanometer-sized carbides tends to decrease with increasing aging time, and Mo contents in nanometer-sized carbides with the same size at different aging time were different.

关键词： Ti-Mo low alloy ferritic steel nanometer-sized carbide precipitation strengthening Ostwald coarsening

新型蓝光材料:氟代三联(9,9-二苯基)芴的合成及其光电性能研究

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化学学报 2008年第14期66卷 1763-1769页

作者：胡晓曦张俊祥王德才吕龙蒋雪茵张志林中国科学院上海有机化学研究所有机氟化学重点实验室上海200032 南京工业大学制药与生命科学学院南京210009 上海大学嘉定校区材料科学与工程学院上海201800

使用hF/吡啶法在芴环的4位引入了氟原子,使用五氟氯苯格氏试剂在芴环的9位引入了全氟苯,合成了五个氟取代三联(9,9-二苯基)芴化合物.测量了该系列化合物的电化学、光学和电致发光性能,氟原子的引入提高了化合物的电子传输能力.在溶液和... 详细信息

使用hF/吡啶法在芴环的4位引入了氟原子,使用五氟氯苯格氏试剂在芴环的9位引入了全氟苯,合成了五个氟取代三联(9,9-二苯基)芴化合物.测量了该系列化合物的电化学、光学和电致发光性能,氟原子的引入提高了化合物的电子传输能力.在溶液和薄膜状态下,该类化合物都呈现出稳定的蓝光发射(色坐标x=0.156,y=0.078).由化合物6f制备的简单器件的启亮电压为6V,最大亮度为452cd/m2.

关键词：氟取代三联芴合成电致发光

Evidence of a J/ψΛstructure and observation of excited■^(-)states in the■b^(-)→J/ψΛK^(-) decay

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science Bulletin 2021年第13期66卷 1278-1287,M0003页

作者： R.Aaij c.Abellán Beteta T.Ackernley B.Adeva M.Adinolfi h.Afsharnia c.A.Aidala S.Aiola Z.Ajaltouni S.Akar J.Albrecht F.Alessio M.Alexander A.Alfonso Albero Z.Aliouche g.Alkhazov P.Alvarez cartelle S.Amato y.Amhis l.An l.Anderlini A.Andreianov M.Andreotti F.Archilli A.Artamonov M.Artuso K.Arzymatov E.Aslanides M.Atzeni B.Audurier S.Bachmann M.Bachmayer J.J.Back S.Baker P.Baladron Rodriguez V.Bal.g.ra W.Baldini J.Baptista leite R.J.Barlow S.Barsuk W.Barter M.Bartolini F.Bary.h.ikov J.M.Basels g.Bassi B.Batsukh A.Battig A.Bay M.Becker F.Bedeschi I.Bediaga A.Beiter V.Belavin S.Belin V.Bellee K.Belous I.Belov I.Belyaev g.Bencivenni E.Ben-haim A.Berezhnoy *** D.Berninghoff h.c.Bernstein c.Bertella E.Bertholet A.Bertolin c.Betancourt F.Betti Ia.Bezshyiko S.Bhasin J.Bhom l.Bian M.S.Bieker S.Bifani P.Billoir M.Birch F.c.R.Bishop A.Bizzeti M.Bj┆rn M.P.Bl.g. T.Blake F.Blanc S.Blusk D.Bobulska J.A.Boelhauve O.Boente garcia T.Boettcher A.Boldyrev A.Bondar N.Bondar S.Borghi M.Borisyak M.Borsato J.T.Borsuk S.A.Bouchiba T.J.V.Bowcock A.Boyer c.Bozzi M.J.Bradley S.Braun A.Brea Rodriguez M.Brodski J.Brodzicka A.Brossa gonzalo D.Brundu A.Buonaura c.Burr A.Bursche A.Butkevich J.S.Butter J.Buytaert W.Byczynski S.cadeddu h.cai R.calabrese l.calefice l.calero Diaz S.cali R.calladine M.calvi M.calvo gomez P.camargo Magalhaes A.camboni P.campana A.F.campoverde Quezada S.capelli l.capriotti A.carbone g.carboni R.cardinale A.cardini I.carli P.carniti l.carus K.carvalho Akiba A.casais Vidal.g.casse M.cattaneo g.cavallero S.celani J.cerasoli A.J.chadwick M.g.chapman M.charles Ph.charpentier g.chatzikonstantinidis c.A.chavez Barajas M.chefdeville c.chen S.chen A.chernov S.-g.chitic V.chobanova S.cholak M.chrzaszcz A.chubykin V.chulikov P.ciambrone M.F.cicala X.cid Vidal.g.ciezarek P.E.l.clarke M.clemencic.h.V.cliff J.closier J.l.cobbledick V.coco J.A.B.coelho J.c.g.n E.c.g.eras l.cojocariu P.collins T.colombo l.congedo A.contu N.cooke g.coombs g.corti c.M.costa Sobral B.couturier D.c.craik J.crkovská M.cruz Torres R.currie c.l.Da Silva E.Dall’ centro Brasileiro de Pesquisas Físicas(cBPF) Rio de JaneiroBrazil Universidade Federal do Rio de Janeiro(UFRJ) Rio de JaneiroBrazil center for high Energy Physics Tsinghua UniversityBeijingChina School of Physics State Key laboratory of Nuclear Physics and technology Peking UniversityBeijingChina university of chinese Academy of sciences BeijingChina institute Of high Energy Physics(IhEP) BeijingChina institute of Particle Physics Central China Normal UniversityWuhanHubeiChina Univ.grenoble Alpes Univ.Savoie Mont BlancCNRSIN2P3-LAPPAnnecyFrance Universitéclermont Auvergne CNRS/IN2P3LPCClermont-FerrandFrance Aix Marseille Univ CNRS/IN2P3CPPMMarseilleFrance UniversitéParis-Saclay CNRS/IN2P3IJCLabOrsayFrance laboratoire leprince-ringuet(llr) PalaiseauFrance lPNhE Sorbonne UniversitéParis Diderot Sorbonne Paris CitéCNRS/IN2P3ParisFrance I.Physikalisches Institut RWTH Aachen UniversityAachenGermany Fakultät Physik Technische Universität DortmundDortmundGermany Max-planck-Institut für Kernphysik(MPIK) HeidelbergGermany Physikalisches Institut Ruprecht-Karls-Universität HeidelbergHeidelbergGermany School of Physics University College DublinDublinIreland INFN Sezione di Bari BariItaly INFN Sezione di Bol.g.a BolognaItaly INFN Sezione di Ferrara FerraraItaly INFN Sezione di Firenze FirenzeItaly INFN laboratori Nazionali di Frascati FrascatiItaly INFN Sezione di genova GenovaItaly INFN Sezione di Milano-Bicocca MilanoItaly INFN Sezione di Milano MilanoItaly INFN Sezione di c.g.iari MonserratoItaly Universita degli Studi di Padova Universita e INFNPadovaPadovaItaly INFN Sezione di Pisa PisaItaly INFN Sezione di Roma Tor Vergata RomaItaly INFN Sezione di Roma la Sapienza RomaItaly Nikhef National institute for Subatomic Physics AmsterdamNetherlands Nikhef National institute for Subatomic Physics and VU university Amsterdam AmsterdamNetherlands henryk Niewodniczanski institute of Nuclear Physics Polish Academy of sciences KrakówPoland Agh-university of science and Techno

First evidence of a structure in the J/ψΛinvariant mass distribution is obtained from an amplitude analysis of■b^(-)J/ψΛK^(-)*** observed structure is consistent with being due to a charmonium pentaquark with strangeness with a significance of 3.1r including systematic uncertainties and lookelsewhere *** mass and width are determined to be 4458:8±2:9t4:7-1:1 MeV and 17:3±6:5t8:0-5:7 MeV,respectively,where the quoted uncertainties are statistical and *** structure is also consistent with being due to two *** addition,the narrow excited■^(-)states,N■(1690)and■(1820),are seen for the first time in a■b^(-)decay,and their masses and widths are measured with improved *** analysis is performed using pp collision data corresponding to a total integrated luminosity of 9 fb^(-1),collected with the lhcb experiment at centre-of-mass energies of 7,8 and 13 TeV.

关键词： QcD Exotics Pentaquark Spectroscopy Quarkonium Particle and resonance production

The engagement of histone lysine methyltransferases with nucleosomes: structural basis, regulatory mechanisms, and therapeutic implications

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Protein & cell 2023年第3期14卷 165-179页

作者： yanjing li Kexue gei Tingting li Run cai yong chen State Key laboratory of Molecular Biol.g. National Center for Protein Science ShanghaiShanghai Institute of Biochemistry and Cell BiologyCenter for Excellence in Molecular Cell ScienceChinese Academyof Sciences320 Yue Yang RoadShanghai 200031China State Key laboratory of Bioreactor engineering East China University of Science and TechnologyShanghai Collaborative Innovation Center for Biomanufacturing(SCICB)Meilong Road 130Shanghai 200237China

histone lysine methyltransferases(hKMTs)deposit methyl.g.oups onto lysine residues on histones and play important roles in regulating chromatin structure and gene *** structures and functions of hKMTs have been extensively investigated in recent decades,significantly advancing our understanding of the dynamic regulation of histone ***,we review the recent progress in structural studies of representative hKMTs in complex with nucleosomes(h3K4,h3K27,h3K36,h3K79,and h4K20 methyltransferases),with emphasis on the molecular mechanisms of nucleosome rec.g.ition and trans-histone crosstalk by these *** structural studies inform hKMTs'roles in tumorigenesis and provide the foundations for developing new therapeutic approachestargetinghKMTs incancers.

关键词： nucleosome cryo-EM structures histone methyltransferases epigenetics histone methylation tumorigenesis

Dimensional Reduction of Eu-Based Metal-Organic Framework as catalysts for Oxidation catalysis of c(sp^(3))-h Bond

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chinese Journal of chemistry 2022年第4期40卷 480-486页

作者： yin Zhang Wei-Dong yu cai-Feng Zhao Jun yan Junior Education Department Changsha Normal UniversityChangshaHunan 410100China coll.g. of science Hunan University of Technology and BusinessChangshaHunan 410000China coll.g. of chemistry and chemical engineering Central South UniversityChangshaHunan 410000China hunan institute of Nuclear Agricultural science and Space Breeding Hunan Academy of Agricultural ScienceChangshaHunon 410000China

comprehensive Summary Developing new catalysts for highly selectivity and conversion of saturated c(sp^(3))-h bonds is of great *** order to obtain catalysts with high catalytic performance,six Eu-based MOFs with different structural characteristics were obtained by using europium ions and different organic acid l.g.nds,namely Eu-1~***-1,Eu-2 and Eu-3 featured three-dimensional structures,while Eu-4 and Eu-5 featured two-dimensional structures.

关键词： Metal-organic frameworks heterogeneous catalysis Rare earths Dimensional reduction Selectively oxidize c(sp^(3))-h

Search for the doubly charmed baryon ?cc+

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science china(Physics,Mechanics & Astronomy) 2021年第10期Mechanics & Astronomy) .卷 6-17页

作者： R. Aaij c. Abellán Beteta T. Ackernley B. Adeva M. Adinolfi h. Afsharnia c. A. Aidala S. Aiola Z. Ajaltouni S. Akar J. Albrecht F. Alessio M. Alexander A. Alfonso Albero Z. Aliouche g. Alkhazov P. Alvarez cartelle S. Amato y. Amhis l. An l. Anderlini A. Andreianov M. Andreotti F. Archilli A. Artamonov M. Artuso K. Arzymatov E. Aslanides M. Atzeni B. Audurier S. Bachmann M. Bachmayer J. J. Back P. Baladron Rodriguez V. Bal.g.ra W. Baldini J. Baptista leite R. J. Barlow S. Barsuk W. Barter M. Bartolini F. Bary.h.ikov J. M. Basels g. Bassi B. Batsukh A. Battig A. Bay M. Becker F. Bedeschi I. Bediaga A. Beiter V. Belavin S. Belin V. Bellee K. Belous I. Belov I. Belyaev g. Bencivenni E. Ben-haim A. Berezhnoy R. Bernet D. Berninghoff h. c. Bernstein c. Bertella A. Bertolin c. Betancourt F. Betti I. Bezshyiko S. Bhasin J. Bhom l. Bian M. S. Bieker S. Bifani P. Billoir M. Birch F. c. R. Bishop A. Bitadze A. Bizzeti M. Bj?rn M. P. Bl.g. T. Blake F. Blanc S. Blusk D. Bobulska J. A. Boelhauve O. Boente garcia T. Boettcher A. Boldyrev A. Bondar N. Bondar S. Borghi M. Borisyak M. Borsato J. T. Borsuk S. A. Bouchiba T. J. V. Bowcock A. Boyer c. Bozzi M. J. Bradley S. Braun A. Brea Rodriguez M. Brodski J. Brodzicka A. Brossa gonzalo D. Brundu A. Buonaura c. Burr A. Bursche A. Butkevich J. S. Butter J. Buytaert W. Byczynski S. cadeddu h. cai R. calabrese l. calefice l. calero Diaz S. cali R. calladine M. calvi M. calvo gomez P. camargo Magalhaes P. campana A. F. campoverde Quezada S. capelli l. capriotti A. carbone g. carboni R. cardinale A. cardini I. carli P. carniti l. carus K. carvalho Akiba A. casais Vidal.g. casse M. cattaneo g. cavallero S. celani J. cerasoli A. J. chadwick M. g. chapman M. charles P. charpentier g. chatzikonstantinidis c. A. chavez Barajas M. chefdeville c. chen S. chen A. chernov V. chobanova S. cholak M. chrzaszcz A. chubykin V. chulikov P. ciambrone M. F. cicala X. cid Vidal.g. ciezarek P. E. l. clarke M. clemencic.h. V. clif J. closier J. l. cobbledick V. coco J. A. B. coelho J. c.g.n E. c.g.eras l. Nikhef National institute for Subatomic Physics Physik-Institut Universit?t Zürich Oliver lodge laboratory university of liverpool Instituto gal.g. de Física de Altas Enerxías (IgFAE) Universidade de Santiago de compostela h.h. Wills Physics laboratory university of Bristol Université clermont Auvergne university of Michigan Ann Arbor United States INFN Sezione di Milano university of cincinnati Fakult?t Physik Technische Universit?t Dortmund European Organization for Nuclear Research (cERN) School of Physics and Astronomy university of glasgow IccUB Universitat de Barcelona Department of Physics and Astronomy university of Manchester Petersburg Nuclear Physics institute NRc Kurchatov institute (PNPI NRc KI) cavendish laboratory university of cambridge Universidade Federal do Rio de Janeiro (UFRJ) Université Paris-Saclay INFN Sezione di Firenze INFN Sezione di Ferrara Physikalisches Institut Ruprecht-Karls-Universit?t heidelberg institute for high Energy Physics NRc Kurchatov institute (IhEP NRc KI) Syracuse university yandex School of Data Analysis Aix Marseille Univ laboratoire leprince-Ringuet cNRS/IN2P3 Ecole Polytechnique Institut Polytechnique de Paris institute of Physics Ecole Polytechnique Fédérale de lausanne (EPFl) Department of Physics university of Warwick centro Brasileiro de Pesquisas Físicas (cBPF) Imperial coll.g. london INFN Sezione di genova National university of science and technology “MISIS” I. Physikalisches Institut RWTh Aachen university INFN Sezione di Pisa INFN Sezione di c.g.iari institute of Nuclear Physics Moscow State university (SINP MSU) institute of Theoretical and Experimental Physics NRc Kurchatov institute (ITEP NRc KI) INFN laboratori Nazionali di Frascati lPNhE Sorbonne Université Paris Diderot Sorbonne Paris cité Universita degli Studi di Padova Universita e INFN henryk Niewodniczanski institute of Nuclear Physics Polish Academy of sciences School of Physics and technology Wuhan university university of Birmingham Università di Modena e Reggio Emilia Department of Physics U

A search for the doubly charmed baryon ?cc+with the decay mode ?cc+→Ξc+K-π+is performed using proton-proton collision data at a centre-of-mass energy of 13 TeV collected by the lhcb experiment from 2016 to 2018, corresponding to an integrated luminosity of 5.4 fb-1. No significant signal is observed within the invariant mass range of 3.6 to 4.0 geV/c2. Upper limits are set on the ratio R of the production cross-section times the total branching fraction of the ?cc+→Ξc+K-π+decay with respect to the Ξcc++→Λc+K-π+π+decay. Upper limits at 95% credibility level for R in the range 0.005 to 0.11 are obtained for diferent hypotheses on the ?cc+mass and lifetime in the rapidity range from 2.0 to 4.5 and transverse momentum range from 4 to 15 geV/c.

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Enhanced antibiotic degradation performance of cd_(0.5)Zn_(0.5)S/Bi_(2)MoO_(6) S-scheme photocatalyst by carbon dot modification

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Journal of Materials science & technology 2023年第33期164卷 59-67页

作者： shijie li Ruyu yan Mingjie cai Wei Jiang Mingyi Zhang Xin li Key laboratory of health Risk Factors for Seafood of Zhejiang Province National Engineering Research Center for Marine AquacultureCollege of Marine Science and TechnologyZhejiang Ocean UniversityZhoushan 316022China Key laboratory for Photonic and Electronic Bandgap Materials Ministry of EducationSchool of Physics and Electronic EngineeringHarbin Normal UniversityHarbin 150025China institute of Biomass engineering Key Laboratory of Energy Plants Resource and UtilizationMinistry of Agriculture and Rural AffairsSouth China Agricultural UniversityGuangzhou 510642China

S-scheme heterojunction engineering is an effective strategy to attain distinctive ***,a carbon dots modulated S-scheme hetero-structured photocatalyst of cd_(0.5)Zn_(0.5)S nanoparticles/Bi_(2)MoO_(6) microspheres/carbon dots (cZcBM),aiming to conquer the photo-corrosion and strengthen the photocatalytic property of cd_(0.5)Zn_(0.5)S,was developed via a facile solvothermal *** visible l.g.t,the optimal cZcBM-2 affords a 1.8-,1.5-,or 0.6-time reinforcement in the oxytetracycline degradation rate constant compared to Bi_(2)MoO_(6),cd_(0.5)Zn_(0.5)S or cd_(0.5)Zn_(0.5)S/Bi_(2)MoO_(6),which is credited to the strengthened visible-l.g.t response,increased reactive sites,and efficient dissolution of photo-carriers with optimal redox capacity because of the co-effect of carbon dots and S-scheme ***,the photo-corrosion of cd_(0.5)Zn_(0.5)S is significantly suppressed and cZcBM-2 affords superior stability and reusability during cycling ***,cZcBM-2 can be well adapted to various *** toxicol.g. appraisement unravels the decreased eco-toxicity of most intermediates compared to ***,an S-scheme charge transfer mechanism with carbon dots as electron reservoir in cZcBM is deduced,which uncloses that •O_(2)− and h+ dominantly account for oxytetracycline eradication and *** study demonstrates the design of unique carbon dots favored S-scheme heterostructures as an effective “Two Birds with One Stone” strategy to achieve high anti-photo-corrosion performance and reinforced photocatalytic performance of sulfides.

关键词： carbon dots S-scheme heterojunction Synergistic effect Pharmaceuticals and personal care products(PPcPs) Toxicity analysis Anti-photocorrosion

Wind Tunnel Experiments and Numerical Study on Performance characteristics of an h-type Vertical Axis Wind Turbine in the Spanwise Direction

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Journal of Thermal science 2021年第3期30卷 758-771页

作者： ZhANg yanfeng lI Qing’an ZhU Xinyu SONg Xiaowen cai chang gUO Zhiping coll.g. of science Inner Mongolia University of TechnologyHohhot 010051China institute of engineering Thermophysics Chinese Academy of SciencesBeijing 100190China coll.g. of Mechanical engineering Inner Mongolia University of TechnologyHohhot 010051China

The aerodynamic forces and vortex characteristics of an h-type Vertical Axis Wind Turbine(VAWT)become complicated because of dynamic stall,particularly in the three-dimensional impact on the blade spanwise *** study focused on the evaluation of the aerodynamic performance and vortex characteristics of an h-type VAWT in the spanwise direction by numerical simulations and wind tunnel *** acting on the blade surface was obtained from multiport pressure measurement devices by wind ***,the vortex field around different blade sections was investigated through numerical *** stall behavior was analysed by comparing the results of numerical simulations and *** a result,the tangential force of single blade was mainly contributed at the chordwise position of x/c≤0.4 c and the power of single blade was mainly contributed at the azimuthal angle range of 60°≤θ≤150°in the blade section position region of 0≤z/(h/2)≤*** the section position of z/(h/2)=0.5,the initial flow separation was found at the suction side and progressed forward to the leading *** the increase of the tip speed ratios,the decreasing position of the averaged local power coefficient of each section was closer to the middle section of z/(h/2)=0,and the attenuation speed became *** power coefficient reductions at the blade section position of z/(h/2)=0.9 were 38.29%,46.78%and 56.42%when the tip speed ratios were 1.38,2.19 and 2.58,*** results of this study provided a better understanding of the development of the performance characteristics and vortex characteristics of h-type VAWT.

关键词： VAWT wind tunnel experiments cFD spanwise direction pressure distribution power coefficient

热处理对自反应淬熄法制备低频liZn铁氧体空心微珠的影响（英文）

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Journal of Zhejiang university-science A(Applied Physics & engineering) 2018年第5期19卷 409-416页

作者： Xu-dong cai Jian-jiang wang Xiao-jun JIANg Jun lINg yi XU Zhan-tong gAO The First Scientific Research institute of Wuxi Wuxi 214035China The Seventh Department Mechanical Engineering CollegeShijiazhuang 050003China cadres Office Mechanical Engineering CollegeShijiazhuang 050003China

目的:自反应淬熄法制备的liZn铁氧体空心微珠密度小,低频吸波性能良好,但微珠表面晶型生长不充分。对其采用特定热处理工艺不仅可以使晶体充分发育,获得特定晶型,还可以实现对低频吸波性能的有效调控。本文旨在研究热处理工艺对liZn铁... 详细信息

目的:自反应淬熄法制备的liZn铁氧体空心微珠密度小,低频吸波性能良好,但微珠表面晶型生长不充分。对其采用特定热处理工艺不仅可以使晶体充分发育,获得特定晶型,还可以实现对低频吸波性能的有效调控。本文旨在研究热处理工艺对liZn铁氧体空心微珠表面形貌、相结构和低频吸波性能的影响。创新点:1.通过热处理工艺,实现对liZn铁氧体空心微珠表面形貌、相结构和低频吸波性能的有效调控;2.深入分析热处理工艺对liZn铁氧体空心微珠低频吸波性能的改善机理。方法:1.通过工艺探索,确定热处理的详细工艺参数。2.通过扫描电子显微镜检测和X射线衍射分析,获得热处理前后liZn铁氧体空心微珠的微观形貌(图2)和物相组成(图3)。3.通过矢量网络分析仪,获得热处理前后材料的电磁参数(图4);在此基础上对比其吸波性能(图5),并研究吸波影响机理。结论:1.采用240°c/min升温至1200°c并保温4 h的热处理后,liZn铁氧体空心微珠表面晶粒明显长大;2.热处理后,微珠四个电磁参数均有所增大,低频吸波性能明显提高,吸收峰值向低频移动;3.表面多种形状微纳米晶粒的形成和长大可能是liZn铁氧体空心微珠低频吸波性能得以提高的主要原因。

关键词： liZn铁氧体热处理低频吸波性能