| 高铁粉煤灰对水泥基材料吸波特性的影响 |
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| 引用本文： | 黄煜镔,钱觉时,张建业.高铁粉煤灰对水泥基材料吸波特性的影响[J].功能材料,2009,40(11). |
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| 作者姓名： | 黄煜镔 钱觉时 张建业 |
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| 作者单位： | 1. 重庆大学,土木学院,重庆,400045
2. 重庆大学,材料科学与工程学院,重庆,400045 |
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| 摘 要： | 采用X射线衍射(XRD)、扫描电子显微镜(SEM)、能量色散谱仪(EDS)分析粉煤灰中铁组分矿物组成和分布形态,对高铁粉煤灰颗粒电磁参数及复合高铁粉煤灰水泥浆体的吸波性能进行了试验研究.结果表明,粉煤灰中富集在球形颗粒表面的各种微细氧化铁晶体,是高铁粉煤灰产生电磁损耗的物质基础;高铁粉煤灰颗粒具有较高的介电常数和一定的磁导率,是以介电损耗型为主的电磁波有效损耗介质;高铁粉煤灰水泥基复合材料在2～8GHz波段范围内具有吸波性能,其最小反射率为-13.01dB,同时吸波能力可能与材料电导率有关.
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| 关 键 词： | 高铁粉煤灰 电磁参数 水泥基复合材料 吸波性能 |
Influence of high-iron fly ash on Absorption property of cement based materials |
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| HUANG Yu-bin,QIAN Jue-shi,ZHANG Jian-ye.Influence of high-iron fly ash on Absorption property of cement based materials[J].Journal of Functional Materials,2009,40(11). |
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| Authors: | HUANG Yu-bin QIAN Jue-shi ZHANG Jian-ye |
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| Affiliation: | HUANG Yu-bin1,QIAN Jue-shi2,ZHANG Jian-ye2(1. School of Civil Engineering,Chongqing University,Chongqing 400045,China,2. College of Materials Science and Engineering,China) |
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| Abstract: | Based on the analysis of composition and form for the iron components in fly ash by X-ray diffraction (XRD),scanning electron microscope(SEM),energy dispersive spectrometer(EDS),the electromagnetic parameters of fly ash particles and the wave Absorbing properties of high-iron fly ash grout were studied with experiments. The results showed that: (1) A variety of fine iron oxide crystals enriched in the spherical surface of fly ash particles play an important role in electromagnetic loss;(2) the high-iron fly... |
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| Keywords: | high-iron fly ash electromagnetic parameters cement based composite wave absorbing property |
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