首页期刊信息编委及顾问期刊发行联系方式使用帮助常见问题ENGLISH
位置:首页 >> 正文
微/纳米锂锌铁氧体­­锌铁氧体空心复相陶瓷微珠的
低温自反应淬熄法制备及其电磁损耗性
作者:娄鸿飞1 王建江1 侯永伸1 万国顺2 高海涛1 
单位:1.机械工程学院 先进材料研究所 石家庄050003  2.驻743厂军代室 太原030000 
关键词:低温自反应淬熄法 锂锌铁氧体--锌铁氧体空心复相陶瓷微珠 电磁损耗性 
分类号:TB333
出版年,卷(期):页码:2014,42(4):437-443
DOI:10.7521/j.issn.0454-5648.2014.04.03
摘要:

Li(NO3)­­Zn(NO3)2­­Fe(NO3)3­­CO(NH2)2­­酚醛树脂­­KH550为反应配系,采用低温自反应淬熄法,制备了微/纳米锂锌铁氧体­­锌铁氧体空心复相陶瓷微珠。通过扫描电子显微镜、X射线衍射、透射电子显微镜、综合热分析、高速摄影技术与矢量网络分析仪分别测定了空心复相陶瓷微珠的本征参数与电磁参数,并研究了其形成机理。结果表明:制备的空心复相陶瓷微珠粒径处于几十纳米至5μm之间,成分由尖晶石型的ZnFe2O4Fe3O4、四方或立方晶系的Fe2O3、菱面体LiFeO2与立方晶系的Li0.5ZnFe2O45种物相组成,表面形貌呈现出纳米等轴晶、多种形貌的纳米析出晶与非晶形态,其中多种形貌的纳米析出晶与非晶组成共晶结构。制备的空心复相陶瓷微珠在低频段具有良好的磁损耗性。自身细化自身爆裂碰撞边缘效应是微/纳米锂锌铁氧体­­锌铁氧体空心复相陶瓷微珠形成的主要机理。宽的尺寸分布、表面组织结构多样化以及多种成分构成的复相结构是具有良好的电磁损耗性的原因。

how do i know if my wife has cheated infidelity in marriage read
read read here link
why do wife cheat on husband women that cheat with married men how to cheat wife
abortion pill abortion pill abortion pill

The micro-/nano-sized spheres of Li-Zn ferrite-Zinc ferrite hollow multiphase ceramic were prepared with Li(NO3)-Zn(NO3)2-Fe(NO3)3-CO(NH2)2-phenolic resin-KH550 as raw material by a low-temperature self-reactive quenching method. The intrinsic and electromagnetic parameters were determined by scanning electron microscopy, transmission electron microscopy, X-ray diffraction, differential thermal and thermalgravimetric analysis, high-speed photography and vector network analysis, respectively. The formation mechanism was investigated. The results show that the size range of hollow multiphase ceramic spheres is from several tens of nanometers to 5 microns, and the phase composition consists of spinel ZnFe2O4 and Fe3O4, tetragonal or cubic Fe2O3, rhombohedral LiFeO2 and cubic Li0.5ZnFe2O4. The spheres are nano-equiaxed precipitated crystallines with the amorphous composition eutectic structure. According to the analysis by electromagnetic tests, the hollow multiphase ceramic spheres have a good magnetic loss in the low frequency. The "self-refinement,“”self-burst", collisionand edge effect are the main mechanisms in the synthesis of micro-/nano-spheres of Li-Zn ferrite-Zinc ferrite hollow multiphase ceramic. The good electromagnetic loss is due to the wider grain size distribution, and the surface structure composed of diverse and complex multi-component phase.

My wife cheated on me read reasons married men cheat
sumatriptan side effects sumatriptan side effects sumatriptan side effects
cialis discount coupons go cialis 2015 coupon
基金项目:
国家自然科学基金(51172282);武器装备预研基金(9140A12040211JB3402)项目资助。
作者简介:
第一作者:娄鸿飞(1987—),男,博士研究生。 通信作者:王建江(1963-),男,博士,教授。
open cheat women go
why do wife cheat on husband why wifes cheat how to cheat wife
doxycycline doxycycline doxycycline
参考文献:

[1]宋福展,沈湘黔,向军,等.M型中空钡铁氧体纤维的制备和表征[J]. 稀有金属材料与工程,2009,38(S1):398-402.
SONG Zhanfu, SHEN Xiangqian, XIANG Jun, et al. Rare Met Mater Eng(in Chinese), 2009, 38(S1): 398-402.
[2]赵文俞,张清杰,李鹏, 等.柠檬酸法合成SrFe12O19磁铅石型铁氧体的晶化过程研究[J]. 硅酸盐学报,2003,31(1):20-30.
ZHAO Wenyu, ZHANG Qingjie, LI Peng, et al. J Chin Ceram Soc, 2003, 31(1): 20-30.
[3]陆胜, 刘仲娥.ZnFe2O4纳米微粉低温制备及其电磁特性[J]. 硅酸盐学报,2005,33(6):665-668.
LU Sheng, LIU Zhonge. J Chin Ceram Soc, 2005, 33(6): 665-668.
[4]焦清介,任慧,付小芬,等.溶胶-凝胶法制备纳米ZnFe2O4复合材料及宽频吸波性能研究[J]. 稀有金属材料与工程,2009,38(S2):963-966.
JIAO Qingjie, REN Hui, FU Xiaofen, et al. Rare Met Mater Eng(in Chinese), 2009, 38(S2): 963-966.
[5]曹晓非,孙康宁,冷亮. Bi2O3和Bi(NO3)3掺杂对锂锌铁氧体微观结构和微波吸收性能的影响[J]. 功能材料, 2009, 40(3):384-386.
CAO Xiaofei, SUN Kangning, LENG Liang. J Funct Mat(in Chinese), 2009, 40(3): 384386.
[6]宋杰,许乃岑,王丽熙,等.溶胶-凝胶燃烧合成法制备Mg2+掺杂Li-Zn 铁氧体及其微波电磁性能[J]. 硅酸盐学报, 2010,38(3):397-403.
SONG Jie, XU Naiceng, WANG Lixi, et al. J Chin Ceram Soc, 2010, 38(3): 397-403.
[7]LOU H F, WANG J J, HUO X J, et al. Preparation and mechanism analysis of a New type hollow multiphase ceramic micro-spheres[J].Powder Technol(in Chinese), 2012, (215-216): 72-78.
[8]LOU H F, WANG J J, ZHAO Z N, et al. Effect of heat treatment on the structure of M-type BaFe12O19 hollow ceramic microspheres prepared by self-reactive quenching technology and microwave absorption properties[J]. J Mater Sci, 2013, 48: 5664-5672.
[9]曹晓非,孙康宁,孙昌,等. 不同煅烧处理对由溶胶凝胶法制备的锂锌铁氧体的微观结构及其吸波性能的影响[J]. 功能材料,2009,40(4):554-556.
CAO Xiaofei, SUN Kangning, SUN Chang, et al. J Funct Mater(in Chinese)t, 2009, 40(4): 554-556.
[10]SHEN G Z, XU Z, LI Y. Absorbing properties and structural design of microwave absorbers based on W-type La-doped ferrite and carbon fiber composites[J]. J Magn Magn Mater, 2006, 301(2): 325-330.
[11]FAN Z J, LUO G H, ZHANG Z F, et al. Electromagnetic and Microwave Absorbing Properties of Multi-walled Carbon Nanotubes/polymer Composites[J]. Mater Sci Eng B, 2006, 132(1-2): 85-89.
[12]ZHAO D L, LUO F,  ZHOU W C,et al. Microwave Absorbing Property and Complex Permittivity of Nano SiC Particles Doped with Nitrogen[J]. J Alloy Compd, 2010, 490(1-2): 190-194.
[13]ZHAO D L, LV Q, SHEN Z M. Fabrication and microwave absorbing properties of Ni-Zn spinel ferrites[J]. J Alloy Compd, 2009, 480(2): 634-638.
[14]Qing Y C, Zhou W C, Luo F, et al. Microwave electromagnetic properties of carbonyl iron particles and Si/C/N nano-powder filled epoxy-silicone coating[J]. Phys B, 2010, 405(4): 1181-1184.

why do wife cheat on husband why wifes cheat how to cheat wife
my wife cheated on me now what i dream my husband cheated on me husband cheat
服务与反馈:
文章下载】【加入收藏
中国硅酸盐学会《硅酸盐学报》编辑室
京ICP备10016537号-2
京公网安备 11010802024188号
地址:北京市海淀区三里河路11号    邮政编码:100831
电话:010-57811253  57811254    
E-mail:jccs@ceramsoc.com