新型炭材料2019，Vol.34Issue(2)：161-169,9.DOI:10.1016/S1872-5805(19)60009-0
石墨烯含量对铜基复合材料的导电、导热、耐腐蚀和力学性能的影响
The effects of graphene content on the corrosion resistance, and electrical, thermal and mechanical properties of graphene/copper composites
王剑 1郭丽娜 2林万明 1陈津 1张帅 1陈少达 1甄甜甜 1张宇阳1
作者信息
- 1. 太原理工大学材料科学与工程学院,山西太原030024
- 2. 太原钢铁集团有限公司,山西太原030003
- 折叠
摘要
Abstract
Graphene-reinforced copper matrix (G/Cu) composites were prepared by temperature-programmed sintering of their mixtures in molds under pressure.The effects of graphene content on the microstructure,and electrical,thermal,mechanical and corrosion properties of the G/Cu composites were investigated.Results show that the hardness,tensile strength,yield strength,thermal and electrical conductivities,and corrosion resistance of the composites all reached maxima at a graphene content of 0.5 wt.％.The addition of graphene increased the thermal and electrical conductivities,tensile and yield strengths,and hardness of the composites,but led to defect formation in the graphene due to the thermal expansion mismatch between graphene and copper.Therefore,an optimal graphene content was needed to obtain the best improvement of these properties.Tafel and electrochemical impedance tests using the composite as the working electrode,Pt as the counter electrode and a saturated calomel electrode as a reference electrode showed that the composite with a graphene content of 0.5 wt％ had the lowest corrosion current of 3.45× 10-6 μA/cm2 and the highest charge transfer resistance of 1 705 Ω·cm2.关键词
石墨烯/铜基复合材料/电导率/耐腐蚀性能/力学性能Key words
Graphene/Copper matrix composites/Conductivity/Corrosion resistance/Mechanical properties分类
通用工业技术引用本文复制引用
王剑,郭丽娜,林万明,陈津,张帅,陈少达,甄甜甜,张宇阳..石墨烯含量对铜基复合材料的导电、导热、耐腐蚀和力学性能的影响[J].新型炭材料,2019,34(2):161-169,9.
