High-performance carbon fiber/gold/copper composite wires for lightweight electrical cables

• 来源期刊: 材料科学技术（英文版）
• 年，卷（期）: 2020,（7）
• 页码范围: 46-53
• 页数: 8页
• 语种: 英文

摘要

In this study,we synthesized high-performance Carbon Fiber/Gold/Copper (CF/Au/Cu) composite wires by using a 2-step deposition method via sputtering and electrodeposition.After Au was sputtered on PAN-based CFs as a pre-treatment,the wettability and surface reactivity of the CFs were improved,resulting in a homogeneous deposition of Cu on their surface.At different Cu electrodeposition time,the resulting CF/Au/Cu composite wires could possess a high strength of up to 3.27 GPa (～ 10 times stronger than copper wires) while their electrical conductivity could be as high as 4.4 × 105 S/cm (～ 75％ of that for copper).More importantly,since the composite wires were lightweight (up to 70％ lower than Cu mass density),they are a promising candidate to substitute conventional heavy metal wires in the future electrical applications.