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This article investigates the electromagnetic wave-absorbing properties of SiC-based ceramic woven fabrics. The electrical conductivity of ceramic woven fabrics was modified by heat treatment in air, resulting in oxidation, and the electromagnetic wave absorption potential of single- and double-layer ceramic woven fabrics were determined in the 17–40 GHz frequency range using the free-space method. The absorption potentials of cera-mic woven fabrics of different chemical composition and weave were correlated with their material properties through X-ray diffraction, scanning electron microscopy,and electrical resistance measurement. The effect of the different arrangements of fabrics in multilayer forms, and how oxidation affects the electromagnetic wave absorption potential of the fabrics are discussed. Various double-layer combinations of SiC-based woven fabrics revealed prom-ising potentials for both reduced reflection and transmission, resulting in *90% absorption in the GHz range, which makes them powerful candidate materials for electromagnetic wave absorption applications. |
金蟲 (正式寫手)
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本論文研究了碳化硅基陶瓷無紡布的電磁波吸收性能,在空氣中對其進(jìn)行不同的熱處理,會導(dǎo)致生成氧化物,陶瓷無紡布的導(dǎo)電率也隨之變化,通過自由空間法進(jìn)行測量,氧化物決定了單層和雙層陶瓷無紡布的電磁波吸收10-40GHz電磁波能力。通過X-射線衍射儀,掃描電子顯微鏡和電阻抗測量可以得知,材料屬性影響了不同成分和編制工藝的陶瓷無紡布的吸收能力。 已經(jīng)完成的研究包括:多層陶瓷無紡布中面料的不同順序疊加的作用和氧化物對電磁波吸收能力的影響。多種雙層結(jié)合的碳化硅基無紡布展示了其對減少電磁波反射及投射的莫大潛力,對于GHz范圍內(nèi),減少率可達(dá)90%,因此,雙層結(jié)合的碳化硅基在電磁波吸收應(yīng)用中有光明的前景。 |

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