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wanghaiju

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[求助] 高分子論文翻譯求助

The electromagnetic wave absorption potential of SiC-based ceramic woven fabrics was determined in the 17–40 GHz frequency range using the free-space method. The electrical conductivities of the fabrics were modified by heat treatment in air. In addition to heat treatment, the effect of different sequences of layers in combination on the electromagnetic wave absorption potential of the ceramic woven fabrics with different chemical compositions and weave types was discussed. As a result, the following conclusions have been drawn:
1.Heat treatment of SiC-based woven fabrics causes a reduction in their electrical conductivity due to an oxidation of fibers. The heat-resistant ZE8 fabric was
influenced least by surface modifications, whereas the carbon-coated PN-type was most affected due to the loss of its carbon-rich layer after heat treatment.
2.As-received and heat-treated single-layer ceramic woven fabrics did not reveal a sufficient absorption potential (<40%) for typical applications. Various double-layer combinations of fabrics showed better electromagnetic wave absorption potentials than those of single layers.
3.The sequences of layers in combinations affected the absorption potential of combinations, where low → -high electrical conductivity layer combinations led to better absorption results than other double-layer combinations.
4.Combinations of heat-treated woven fabrics did not necessarily result in an improvement in absorption potential. Rather than a direct increase in absorption,the function of heat treatment was
5.Double-layer combinations of the satin woven fabrics (S8 and ZE8) showed promising absorption characteristics compared to other combinations. S8 and ZE8 combinations in as-received and heat-treated states showed absorption potentials of higher than 90% over a wide frequency range. The high absorption potential of multi-layer SiC-based ceramic woven fabrics in the GHz range renders them as strong candidate materials for electromagnetic wave-absorbing applications.to change the electrical conductivities of the woven fabrics to achieve low→high electrical conductivity layer
combinations.

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1樓 2014-06-12 08:59:04

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reko34

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wanghaiju: 金幣+35, 翻譯EPI+1, ★★★很有幫助 2014-06-12 12:27:08

通過(guò)自由空間法確定基于SiC的陶瓷織物對(duì)17-40GHz頻率范圍的電磁波吸收能力。通過(guò)空氣中的熱處理改動(dòng)織物的電導(dǎo)率。除了熱處理，還討論了不同的層序組合對(duì)不同化學(xué)成分和編織方式陶瓷織物的電磁波吸收能力的影響。得出了下列結(jié)論：
1. 熱處理使基于SiC的織物的電導(dǎo)率因纖維氧化而降低。ZE8織物的耐熱性受表面處理的影響最小，經(jīng)碳涂層處理的PN型因熱處理導(dǎo)致富碳層損失受影響最大。
2. 收貨狀態(tài)和熱處理后的單層陶瓷織物不具有滿足常規(guī)應(yīng)用的吸收能力（<40%）。不同的雙層織物組合展示出比單層更好的電磁波吸收能力。
3. 組合的層序影響其吸收能力，低→高電導(dǎo)率的層組合比其他雙層組合有更好的吸收結(jié)果。
4. 熱處理后織物的組合沒有明顯改善吸收能力。吸收能力沒有直接加強(qiáng)，但熱處理的作用是改變織物的電導(dǎo)率以實(shí)現(xiàn)低→高電導(dǎo)率的層組合。
5. 緞紋織物（S8和ZE8）的雙層組合相比其他組合顯示出更好的吸收特性。收貨狀態(tài)和熱處理狀態(tài)的S8和ZE8組合在一個(gè)寬的頻率范圍內(nèi)顯示出高于90%的吸收能力。多層基于SiC的陶瓷織物在GHz范圍的高吸收能力使它們成為電磁波吸收應(yīng)用的強(qiáng)力候選材料。

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2樓2014-06-12 11:48:35