自反应淬熄法制备Zn-Ti钡铁氧体空心陶瓷微珠及其超声化学镀Ni-Co合金后的吸波性能  

Microwave Absorbing Properties of Ultrasonic Chemical Electroless Ni-Co Coating on Zn-Ti Barium Ferrite Hollow Ceramic Microsphere Materials Prepared by Self-Reactive Quenching Method

作　　者：李志广[1] 米伟娟[2] 王建江[3] 

机构地区：[1]石家庄军械工程学院基础部,河北石家庄050051 [2]河北传媒学院信息技术系,河北石家庄050051 [3]石家庄军械工程学院车辆与电气工程系,河北石家庄050003

出　　处：《材料保护》2015年第10期1-3,6,共3页Materials Protection

基　　金：国防科技重点实验室基金项目(9140C870401130C87300)资助

摘　　要：通过自反应淬熄法制备Zn—Ti钡铁氧体空心陶瓷微珠吸波材料，再超声波化学镀Ni-Co合金，制成了具有核／壳／腔结构的吸波材料，以进一步提高陶瓷微珠的吸波性能；采用SEM、EDS和XRD法分析了其形貌及结构，并应用Aglient网络矢量仪和85055APC-7mm同轴空气线测试了其吸波性能。结果显示，空心陶瓷微珠具有中空的球形结构，主要物相BaZnTiFe10O19为一种M型钡铁氧体，表面化学镀Ni—Co合金层后吸波性能得到了提高，在2—18GHz范围内，厚度为2．71mm，吸波最低反射率达到了-21．38dB，反射率小于-10dB的带宽为3．51GHz，带宽增宽。Zn-Ti barium ferrite hollow ceramic microsphere microwave absorption materials were prepared by self-reactive quenching method,and then Ni-Co alloy coating was prepared on the surface by ultrasonic chemical electroless plating to obtain more excellent microwave absorption materials with core- shell- hollow structure.The morphology and structure were analyzed by scanning electron microscope(SEM),energy disperse spectroscopy(EDS) and X- ray diffractometer(XRD),and the absorbing properties were evaluated by Aglient Network Vector detector and 85055APC-7mm air coaxial line.Results showed that the ceramic microsphere materials had hollow structure,and the composition phase of those was BaZnTiFe_(10)O_(19),one of M-type barium ferrite.Electroless Ni-Co alloy coating led to improved microwave absorbing properties.Besides,when the thickness was 2.71 mm,the lowest reflection rate was-21.38 dB in the frequency range of 2-18 GHz,and the frequency bandwidth with reflection rate of less than- 10 dB was widened to 3.51 GHz.

关 键 词：自反应淬熄法 Zn.Ti钡铁氧体 空心陶瓷微珠 超声波化学镀Ni.Co 核壳腔结构 吸波性能 

分 类 号：TM277[一般工业技术—材料科学与工程]