激光加工双级结构对Al/CFRPEEK接头组织及性能的影响

doi:10.7527/S1000-6893.2020.24620

Abstract

Abstract: Non-polarity of the PEEK matrix makes it difficult to directly join metal and the carbon-fiber-reinforced-PEEK by friction lap joining. Laser surface texturing is proposed to assist the friction lap joining of the carbon-fiber-reinforced-PEEK, which is a nonpolar thermoplastic matrix, and 6061-T6 aluminum alloy, significantly enhancing the bonding strength of the carbon-fiber-reinforced-PEEK/6061-T6 joints. Results show that the laser surface texturing produces the dual-scale hierarchical structure of micro-pores and nano-particles on 6061-T6 surfaces, thereby changing the wettability of the surfaces. The superhydrophobic surface of 6061-T6 exhibits higher adhesion property with the carbon-fiber-reinforced-PEEK than the hydrophobic surface does. A flawless interface is observed in the joint of the carbon-fiber-reinforced-PEEK and 6061-T6 with the superhydrophobic surface. The micromechanical interlocking caused by micro-pores and nano-particles on 6061-T6 surfaces explains the enhancement of the bonding strength between the carbon-fiber-reinforced-PEEK and 6061-T6.

Key words: carbon-fiber-reinforced-PEEK, laser surface texturing, superhydrophobic surface, aluminum alloy, friction lap joining

CLC Number:

V261.3⁺4

XU Mengjia, LIU Bosheng, BI Xiaoyang, WANG Zhenmin. Effect of laser textured dual-scale structure on microstructure and mechanical property of Al/CFRPEEK joint[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2022, 43(2): 624620-624620.

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Effect of laser textured dual-scale structure on microstructure and mechanical property of Al/CFRPEEK joint

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