Multifunctional nanocomposites integrate electromagnetic shielding,thermal, mechanical,and wear resistance properties |
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Authors: | Wanbo Hou Tao Feng Xinhao Shi Xiangyuan Meng Lu Fu Mingde Tong Hejun Li Hongjiao Lin |
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Affiliation: | 1. School of Mechanics, Civil Engineering and Architecture, Northwestern Polytechnical University, Xi'an, P. R. China;2. State Key Laboratory of Solidification Processing, Shaanxi Key Laboratory of Fiber Reinforced Light Composite Materials, Northwestern Polytechnical University, Xi'an, P. R. China |
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Abstract: | The SiCnws/SiC nanocomposites were in situ synthesized by using nickel carbon foam as catalyst and skeleton. This technique has a series of advantages including simple operation, low cost, and high efficiency. Due to the excellent microwave absorption and thermal properties of SiCnws, SiCnws/SiC nanocomposites possess excellent electromagnetic shielding performance with a high SET value of 38.3 dB and good thermal properties with thermal conductivity of 13.77 ± 0.098 wm?1k?1 at room temperature. Meanwhile, the bending strength of the nanocomposites is 110.9 ± 7.7 MPa. The friction coefficient of nanocomposites is about 0.26 with a wear speed of about 67 um3/s. Therefore, the nanocomposites integrate many advantages including lightweight (2.0 g/cm3), excellent electromagnetic shielding, good heat conduction, high strength, and wear resistance. |
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Keywords: | electromagnetic shielding lightweight multifunctional material nanocomposites |
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