纳米级六角晶系复合W型铁氧体的制备及其吸波特性的研究
摘要
本文主要用溶胶—凝胶法和化学共沉法研制出了纳米级六角晶系(NiZnCo)_2—W型Ba铁氧体。探究了在不同的制备工艺条件下该种材料的微粒尺寸、相结构、微波吸收及其它基本特性。
一、较为系统地概述了在雷达工作的频段内，六角晶系铁氧体依靠畴壁共振、自然共振、固有电偶极子极化等磁极化机制衰减、吸收微波。根据微波在介质涂层中传输理论，导出了微波投射到吸收材料涂层上被完全俘获和吸收的匹配条件。为微波吸收材料涂层，特别是结构型吸波材料的设计提供了可靠的理论根据。
二、介绍了当前制备超微粒子的各种湿化学方法。本文以BaNi_(0.6)Zn(1.4-x)Co_xFe_(16-y)~(3+)Al_y~(3+)O_(27)为系列配方，用溶胶—凝胶法和化学共沉法制备出了复相、单相纳米级W型六角晶系Ba铁氧体吸波材料。
三、从吸收材料涂层要满足吸收峰强、频带宽、涂层薄、质量轻、耐高温等要求出发，开展了系列研究。其中，重点研究了两种制备方法和烧结条件对平面W型复合Ba铁氧体吸波特性的影响，探究了不同含Co、Al量及掺入碳纤维对其吸波性能的影响。
实验结果表明，该种吸收材料在x波段内呈现两个吸收峰，平均衰减量≥7dB，最大吸收峰为24dB，涂层匹配厚度为1.21mm，特别是具有457℃的居里温度。所以该种铁氧体是一种性能优良的微波吸收材料，在军事隐形技术中有实用价值。
W-type barium hexaferrite nanoparticle has been prepared by sol-
gel and chemical coprecipitation method in this paper. lts grain size and
phase structure depending on preparation procedure were aIso investigated.
Firstly, microwave absorptive lnechanism for w-type hexaferrite was
generalized as domain resonance and natural resonance. Based on the theory
of microwave transmission in the media,matching conditiQns Qf absorption
films for the capture and absorption of microwave signal were;derived.
Secondly, the popular solution method to prepare uItrafine particle was
introduced. According to BaNi,.,Zn,..-.Co.Fel6-,'+Al,'+O stoichiometric
composition, Composite and single pl1ase w-type hexaferrite nanoparticle
absorption wave material were prepared.
Thirdly,absorbing microwave capacity dependence of preparation
method' sinter condition' Co col1tent and doped carbon fiber were
thoroughly studied.
Experiment contrast show, the prepared w-type planar hexaferrite
microwave absorptive material appears two absorptive peaks in the
frequency range of (7~l2GHz),its average attel1uation exceed 7dB,the
maximum absorptive attenuation is 24dB,coat matching thickness is
l.21mm,especialy its curie temperature is 457C.So, It can meet practical
demands in military camouflage field.
一、较为系统地概述了在雷达工作的频段内，六角晶系铁氧体依靠畴壁共振、自然共振、固有电偶极子极化等磁极化机制衰减、吸收微波。根据微波在介质涂层中传输理论，导出了微波投射到吸收材料涂层上被完全俘获和吸收的匹配条件。为微波吸收材料涂层，特别是结构型吸波材料的设计提供了可靠的理论根据。
二、介绍了当前制备超微粒子的各种湿化学方法。本文以BaNi_(0.6)Zn(1.4-x)Co_xFe_(16-y)~(3+)Al_y~(3+)O_(27)为系列配方，用溶胶—凝胶法和化学共沉法制备出了复相、单相纳米级W型六角晶系Ba铁氧体吸波材料。
三、从吸收材料涂层要满足吸收峰强、频带宽、涂层薄、质量轻、耐高温等要求出发，开展了系列研究。其中，重点研究了两种制备方法和烧结条件对平面W型复合Ba铁氧体吸波特性的影响，探究了不同含Co、Al量及掺入碳纤维对其吸波性能的影响。
实验结果表明，该种吸收材料在x波段内呈现两个吸收峰，平均衰减量≥7dB，最大吸收峰为24dB，涂层匹配厚度为1.21mm，特别是具有457℃的居里温度。所以该种铁氧体是一种性能优良的微波吸收材料，在军事隐形技术中有实用价值。
W-type barium hexaferrite nanoparticle has been prepared by sol-
gel and chemical coprecipitation method in this paper. lts grain size and
phase structure depending on preparation procedure were aIso investigated.
Firstly, microwave absorptive lnechanism for w-type hexaferrite was
generalized as domain resonance and natural resonance. Based on the theory
of microwave transmission in the media,matching conditiQns Qf absorption
films for the capture and absorption of microwave signal were;derived.
Secondly, the popular solution method to prepare uItrafine particle was
introduced. According to BaNi,.,Zn,..-.Co.Fel6-,'+Al,'+O stoichiometric
composition, Composite and single pl1ase w-type hexaferrite nanoparticle
absorption wave material were prepared.
Thirdly,absorbing microwave capacity dependence of preparation
method' sinter condition' Co col1tent and doped carbon fiber were
thoroughly studied.
Experiment contrast show, the prepared w-type planar hexaferrite
microwave absorptive material appears two absorptive peaks in the
frequency range of (7~l2GHz),its average attel1uation exceed 7dB,the
maximum absorptive attenuation is 24dB,coat matching thickness is
l.21mm,especialy its curie temperature is 457C.So, It can meet practical
demands in military camouflage field.
引文
[1] 崔东辉，朱绪宝．飞航导弹，11(2000)
[2] 中国电子报，1999-09-09(8)
[3] 徐生求．空军雷达学院学报[J]．2001，15(1)
[4] 谭锐．磁性材料及器件．31(1)，2002
[5] 杉本渝，工业材料(日)46(10)，1998
[6] 姚学标等．功能材料．30(4)，1999．
[7] 胡国光等．功能材料．31(3)，2000
[8] J.R.Truedson. K.D.Mckinstry, IEEE Traans Magn TM-28,3309(1992)
[9] R.Karim,K.D,Mckinstry IEEE Trans. Magn TM-28,3225(1992)
[10] Shengping Ruan,Baokun Xu,J.Magn. Magn. Mater. 175-177,212(2000)
[11] G.ALBANESE,L.PARETI, J.Magn. Magn. Mater. 15-18, 1453(1980)
[12] F.K.Lotgering,P.H.G.M. J.Appl. Phys.51(11),1980
[13] F. Leccabue,G.Solviati,IEEE Trans. Magn. MAG-24(1988)1850
[14] A.Paoluzi, A.Deriu, J.Appl.Phys.63(10), 1988
[15] G.Albanese,M.Carbucicchio, Appl. Phys 11,81(1986)
[16] G.Asti,F. Bolzoni,IEEE Trans. Magn.883,14(1978)
[17] Surig C,Hemple K A. Appl Phys Let,2836-2838,63(1993)
[18] 都有为．《铁氧体》，江苏科学技术出版社，1996
[19] 周志刚等．《铁氧体磁性材料》．北京．科学出版社，1981
[20] 廖绍彬，《铁磁学》．科学出版社，1998
[21] 卢荣章．《电磁场与微波基础》，北京：高教出版社，1985
[22] Xiaohui Wang,Gang Xiong, J.Magn. Magn. Mater.96-100,189(1998)
[23] 方以坤，汪忠柱等，功能材料，32(4)，2001
[24] Surig C, Hemple K A.IEEE Traans Magn,(Nov, 1994).
[25] Wei Zhou, Weiping Ding. J.Magn. Magn. Mater. 192-202,168(1997)
[26] J.Bursik,Z.Simsa, J.Magn. Magn.Mater.. 157-158,311(1996)
[27] Chui Sung Kim,Seung Wha Lee, J.Magn. Magn. Mater. 6244-6246, 87(2000)
[28] A.Ataie,I.R.Harris,J.Mater. Sci. 1429,30(19950
[29] J.F. Wang,C.B.Ponton, J.Magn. Magn. Mater. 233-240,234(2001)
[30] Jong-Heun Lee,Soon-JA.Park,J.of. Mater. sci 254,4(1993)
[31] G.Albanese,B.E.Watts, J.Magn. Magn. Mater. 184,337(1998)
[32] 汤世贤．《微波测量》．北京：国防工业出版社，1991
[33] Nicolson A M,Ross G F. IEEE Trans Instrum Meas, 1982,193 77-382
[34] Hakki B W, Coleman P D. IRE Trans Microwave Theory Tech, 1960,8: 402-410
[35] Heribert Graetsch,Florian Haberey, IEEE Traans Magn, MAG-20, 3(1984)
[36] A Collomb,O.Abdelkader,A.lsalgue,and J.P. Mignot,phys status Solidi A 97,511(1986)
[37] Peter Lubitz, J.Appl. Phys,4978-4982,87(2000)
[38] J.Kreisel, J.Magn. Magn. Mater. 17-29,224(2001)
[39] X.Wang, J.Magn. Magn. Mater. 96-100,189(1998)
[40] X.H.Wang, Dan li,J.Alloy Compound 237-239,45(1996)
[41] S.Wang,J.Ding, J.Magn. Magn.Mater.206-212,219(2000)
[42] 华宝家等．宇航材料工艺，1994(1)
[43] 邢丽英等．材料工程，1998(1)
[44] 曾祥云．材料研究学报，12(2)，1998
[45] 黄小忠等．功能材料．314)，2000
[46] Z.J.Tien,K.B.Lyons.J.Appl.Phys.56(7),1984
[47] 娄明连等．电子元件与材料，17(3)，1998
[48] 胡国光，姚学标．磁性材料及器件．30(1)，1999
[49] 姚学标等．微波学报．15(2)，1999
[50] 汪忠柱，姚学标．安徽大学学报．25(3)，2001
[51] 汪忠柱，姚学标．磁性材料及器件．32(4)，2001
[2] 中国电子报，1999-09-09(8)
[3] 徐生求．空军雷达学院学报[J]．2001，15(1)
[4] 谭锐．磁性材料及器件．31(1)，2002
[5] 杉本渝，工业材料(日)46(10)，1998
[6] 姚学标等．功能材料．30(4)，1999．
[7] 胡国光等．功能材料．31(3)，2000
[8] J.R.Truedson. K.D.Mckinstry, IEEE Traans Magn TM-28,3309(1992)
[9] R.Karim,K.D,Mckinstry IEEE Trans. Magn TM-28,3225(1992)
[10] Shengping Ruan,Baokun Xu,J.Magn. Magn. Mater. 175-177,212(2000)
[11] G.ALBANESE,L.PARETI, J.Magn. Magn. Mater. 15-18, 1453(1980)
[12] F.K.Lotgering,P.H.G.M. J.Appl. Phys.51(11),1980
[13] F. Leccabue,G.Solviati,IEEE Trans. Magn. MAG-24(1988)1850
[14] A.Paoluzi, A.Deriu, J.Appl.Phys.63(10), 1988
[15] G.Albanese,M.Carbucicchio, Appl. Phys 11,81(1986)
[16] G.Asti,F. Bolzoni,IEEE Trans. Magn.883,14(1978)
[17] Surig C,Hemple K A. Appl Phys Let,2836-2838,63(1993)
[18] 都有为．《铁氧体》，江苏科学技术出版社，1996
[19] 周志刚等．《铁氧体磁性材料》．北京．科学出版社，1981
[20] 廖绍彬，《铁磁学》．科学出版社，1998
[21] 卢荣章．《电磁场与微波基础》，北京：高教出版社，1985
[22] Xiaohui Wang,Gang Xiong, J.Magn. Magn. Mater.96-100,189(1998)
[23] 方以坤，汪忠柱等，功能材料，32(4)，2001
[24] Surig C, Hemple K A.IEEE Traans Magn,(Nov, 1994).
[25] Wei Zhou, Weiping Ding. J.Magn. Magn. Mater. 192-202,168(1997)
[26] J.Bursik,Z.Simsa, J.Magn. Magn.Mater.. 157-158,311(1996)
[27] Chui Sung Kim,Seung Wha Lee, J.Magn. Magn. Mater. 6244-6246, 87(2000)
[28] A.Ataie,I.R.Harris,J.Mater. Sci. 1429,30(19950
[29] J.F. Wang,C.B.Ponton, J.Magn. Magn. Mater. 233-240,234(2001)
[30] Jong-Heun Lee,Soon-JA.Park,J.of. Mater. sci 254,4(1993)
[31] G.Albanese,B.E.Watts, J.Magn. Magn. Mater. 184,337(1998)
[32] 汤世贤．《微波测量》．北京：国防工业出版社，1991
[33] Nicolson A M,Ross G F. IEEE Trans Instrum Meas, 1982,193 77-382
[34] Hakki B W, Coleman P D. IRE Trans Microwave Theory Tech, 1960,8: 402-410
[35] Heribert Graetsch,Florian Haberey, IEEE Traans Magn, MAG-20, 3(1984)
[36] A Collomb,O.Abdelkader,A.lsalgue,and J.P. Mignot,phys status Solidi A 97,511(1986)
[37] Peter Lubitz, J.Appl. Phys,4978-4982,87(2000)
[38] J.Kreisel, J.Magn. Magn. Mater. 17-29,224(2001)
[39] X.Wang, J.Magn. Magn. Mater. 96-100,189(1998)
[40] X.H.Wang, Dan li,J.Alloy Compound 237-239,45(1996)
[41] S.Wang,J.Ding, J.Magn. Magn.Mater.206-212,219(2000)
[42] 华宝家等．宇航材料工艺，1994(1)
[43] 邢丽英等．材料工程，1998(1)
[44] 曾祥云．材料研究学报，12(2)，1998
[45] 黄小忠等．功能材料．314)，2000
[46] Z.J.Tien,K.B.Lyons.J.Appl.Phys.56(7),1984
[47] 娄明连等．电子元件与材料，17(3)，1998
[48] 胡国光，姚学标．磁性材料及器件．30(1)，1999
[49] 姚学标等．微波学报．15(2)，1999
[50] 汪忠柱，姚学标．安徽大学学报．25(3)，2001
[51] 汪忠柱，姚学标．磁性材料及器件．32(4)，2001