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高分子论文翻译求助
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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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reko34
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wanghaiju: 金币+35, 翻译EPI+1, ★★★很有帮助 2014-06-12 12:27:08
wanghaiju: 金币+35, 翻译EPI+1, ★★★很有帮助 2014-06-12 12:27:08
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通过自由空间法确定基于SiC的陶瓷织物对17-40GHz频率范围的电磁波吸收能力。通过空气中的热处理改动织物的电导率。除了热处理，还讨论了不同的层序组合对不同化学成分和编织方式陶瓷织物的电磁波吸收能力的影响。得出了下列结论： 1. 热处理使基于SiC的织物的电导率因纤维氧化而降低。ZE8织物的耐热性受表面处理的影响最小，经碳涂层处理的PN型因热处理导致富碳层损失受影响最大。 2. 收货状态和热处理后的单层陶瓷织物不具有满足常规应用的吸收能力（<40%）。不同的双层织物组合展示出比单层更好的电磁波吸收能力。 3. 组合的层序影响其吸收能力，低→高电导率的层组合比其他双层组合有更好的吸收结果。 4. 热处理后织物的组合没有明显改善吸收能力。吸收能力没有直接加强，但热处理的作用是改变织物的电导率以实现低→高电导率的层组合。 5. 缎纹织物（S8和ZE8）的双层组合相比其他组合显示出更好的吸收特性。收货状态和热处理状态的S8和ZE8组合在一个宽的频率范围内显示出高于90%的吸收能力。多层基于SiC的陶瓷织物在GHz范围的高吸收能力使它们成为电磁波吸收应用的强力候选材料。 |
2楼2014-06-12 11:48:35
