Mechanical properties’ investigation of Ag decorated graphene nanoplatelets and Ag decorated N-doped graphene nanoplatelets reinforced Cu composites

IF 4.2 2区工程技术 Q2 ENGINEERING, CHEMICAL Advanced Powder Technology Pub Date : 2024-08-14 DOI:10.1016/j.apt.2024.104616

Saad Ali , Faiz Ahmad , Puteri Sri Melor Megat Yusoff , Norhamidi Muhamad , Khurshid Malik , Chowdhury Ahmed Shahed

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Abstract

Poor wettability and weak graphene/Cu interface limit the mechanical properties’ enhancement in graphene/Cu composites. This study devised an interface enhancement approach by Ag decoration of graphene nanoplatelets (Ag-GNPs) and Ag decorated nitrogen doped graphene (Ag-N-GNP) without oxide (during decoration) and carbide (during sintering) formation. Sonication was used to functionalize GNPs for decoration with Ag nanoparticles (NPs) and Cu composites (Ag-GNP/Cu and Ag-N-GNP/Cu) were fabricated using cold pressing (low-pressure) and sintering. 2-Ag-GNP/Cu (2 vol% of Ag-GNPs) and 2-Ag-N-GNP/Cu (2 vol% of Ag-N-GNPs) possessed highest sintered density. In addition, 2-Ag-GNP/Cu and 1-Ag-N-GNP/Cu showed highest microhardness and tensile strength (theoretical), respectively. Higher concentration of Ag NPs on GNPs in Ag-N-GNP (oxygen and nitrogen functionalization) showed lower mechanical properties for Ag-N-GNP/Cu compared to Ag-GNP/Cu with limited Ag NPs on GNPs (oxygen functionalization). Interface modification strategy with noble metal NPs bridging between GNP and Cu suggests controlled functionalization and noble metal NPs’ attachment on GNPs for effective mechanical properties’ enhancement in graphene Cu composites.

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银饰石墨烯纳米片和银饰 N 掺杂石墨烯纳米片增强铜复合材料的力学性能研究

石墨烯/铜复合材料润湿性差、界面脆弱，限制了其机械性能的提高。本研究通过对石墨烯纳米片（Ag-GNPs）和Ag装饰的掺氮石墨烯（Ag-N-GNP）进行Ag装饰，设计了一种界面增强方法，在装饰过程中不会形成氧化物，在烧结过程中也不会形成碳化物。使用超声波对 GNPs 进行功能化处理，以便用 Ag 纳米粒子 (NPs) 进行装饰，并使用冷压（低压）和烧结工艺制作了铜复合材料（Ag-GNP/Cu 和 Ag-N-GNP/Cu）。2-Ag-GNP/Cu（Ag-GNPs 占 2 Vol%）和 2-Ag-N-GNP/Cu（Ag-N-GNPs 占 2 Vol%）的烧结密度最高。此外，2-Ag-GNP/Cu 和 1-Ag-N-GNP/Cu 分别显示出最高的显微硬度和抗拉强度（理论值）。与 GNP 上只有少量 AgNPs 的 Ag-GNP/Cu（氧官能化）相比，Ag-N-GNP/Cu 中 GNPs 上更高浓度的 AgNPs（氧和氮官能化）显示出更低的机械性能。在 GNP 和铜之间桥接贵金属 NPs 的界面改性策略表明，可控官能化和贵金属 NPs 附着在 GNP 上可有效提高石墨烯铜复合材料的机械性能。

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来源期刊

Advanced Powder Technology 工程技术-工程：化工

CiteScore

9.50

自引率

7.70%

发文量

424

审稿时长

55 days

期刊介绍： The aim of Advanced Powder Technology is to meet the demand for an international journal that integrates all aspects of science and technology research on powder and particulate materials. The journal fulfills this purpose by publishing original research papers, rapid communications, reviews, and translated articles by prominent researchers worldwide. The editorial work of Advanced Powder Technology, which was founded as the International Journal of the Society of Powder Technology, Japan, is now shared by distinguished board members, who operate in a unique framework designed to respond to the increasing global demand for articles on not only powder and particles, but also on various materials produced from them. Advanced Powder Technology covers various areas, but a discussion of powder and particles is required in articles. Topics include: Production of powder and particulate materials in gases and liquids(nanoparticles, fine ceramics, pharmaceuticals, novel functional materials, etc.); Aerosol and colloidal processing; Powder and particle characterization; Dynamics and phenomena; Calculation and simulation (CFD, DEM, Monte Carlo method, population balance, etc.); Measurement and control of powder processes; Particle modification; Comminution; Powder handling and operations (storage, transport, granulation, separation, fluidization, etc.)