张泽洋,刘祥萱,吴有朋,王煊军.热处理对锶铁氧体微结构及吸波性能的影响[J].表面技术,2012,(1):109-112.
ZHANG Ze-yang,LIU Xiang-xuan,WU You-peng,WANG Xuan-jun.Influence of Heat-treatment on the Microstructure and Microwave Absorbing Properties of SrFe12O19[J].Surface Technology,2012,(1):109-112 |
| 热处理对锶铁氧体微结构及吸波性能的影响 |
| Influence of Heat-treatment on the Microstructure and Microwave Absorbing Properties of SrFe12O19 |
| 投稿时间：2011-08-27 修订日期：2012-02-20 |
| DOI： |
| 中文关键词: 锶铁氧体 热处理 匹配厚度 吸波性能 |
| 英文关键词:strontium ferrite heat-treatment matching thickness microwave absorbing property |
| 基金项目: |
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| Author | Institution |
| ZHANG Ze-yang | No.503 Faculty, The Second Artillery Engineering University, Xi'an710025, China |
| LIU Xiang-xuan | No.503 Faculty, The Second Artillery Engineering University, Xi'an710025, China |
| WU You-peng | No.503 Faculty, The Second Artillery Engineering University, Xi'an710025, China |
| WANG Xuan-jun | No.503 Faculty, The Second Artillery Engineering University, Xi'an710025, China |
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| 中文摘要: |
| 采用溶胶凝胶自燃烧法,在不同煅烧温度条件下制备了六角锶铁氧体粉体,对其结构、形貌和电磁参数进行了分析。通过绘制匹配解析图,求得各锶铁氧体所得涂层的最佳匹配厚度和最佳匹配频率,并利用传输线理论计算了最佳条件下样品的吸波效果。结果表明:热处理温度对锶铁氧体的结构和形貌有很大影响,以5℃/min升温时,随着煅烧温度升高,颗粒由米粒状逐步转化为完美的六角片状;热处理温度对锶铁氧体吸波性能的影响也较大,1000℃的样品吸波效果最好,当匹配厚度为5.2mm 时,低于-5dB的带宽为4.5GHz,最大吸收峰值为-38dB。 |
| 英文摘要: |
| M-type strontium ferrite powders were prepared by sol-gel-autocombustion and the micro-structures, morphology and the electromagnetic properties of powders were characterized. Impedance matching solution maps was designed to obtain the matching frequency and the matching thickness. Based on the match-ingfrequency and the matching thickness, microwave absorption of the material was studied. The results show that with increasing of temperature the shape of particles change from rice-like to hexagon. It is found that an-nealing temperatures could affect the microwave absorbing properties of SrFe12O19. When annealing tempera-ture is 1000℃ with a 5.2 mm thickness, the maximum reflection loss becomes - 38 dB at 6 GHz, and the - 5 dB bandwidth reaches 4.5 GHz. |
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