Please use this identifier to cite or link to this item: http://hdl.handle.net/10773/39940
Title: On the Structural, Thermal, Micromechanical and Tribological Characterizations of Cu-Filled Acrylonitrile Butadiene Styrene Micro-Composites
Author: Akrout, Mabrouka
Ben Difallah, Basma
Kharrat, Mohamed
Dammak, Maher
Pereira, António
Oliveira, Filipe J.
Duarte, Isabel
Keywords: ABS
Cu
Micro-composite
Microstructure
Thermal
Nanoindentation
Tribology
Issue Date: Oct-2023
Publisher: MDPI
Abstract: The purpose of this work was to investigate the structural, thermal, micromechanical and tribological properties of novel polymer/metal composite materials for bearing applications. Copper (Cu)-filled Acrylonitrile Butadiene Styrene (ABS) composites were mixed in a laboratory scale by an internal mixer with two blade impellers, and then injection-molded. Neat ABS, ABS+5wt% Cu, ABS+10wt% Cu, and ABS+15wt% Cu were the four materials that were tested. The dispersion of Cu particles in the ABS matrix was investigated using Scanning Electron Microscopy (SEM) and a micro-tomography scan. The filler particles have a uniform distribution in the matrix, according to the observations. The incorporation of Cu filler also refined an increase in the glass transition temperature from Differential Scanning Calorimetry (DSC) and less intensity in the amorphous phase by X-ray diffraction (XRD). Nanoindentation tests were carried out to characterize the micro-mechanical behavior of the composites. Friction and wear analysis were also examined using a pin-on-disk tribometer. Compared with neat ABS, all the micro-composites showed much higher indentation hardness, Vickers hardness, and indentation elastic modulus. It was also concluded that the incorporation of Cu filler into ABS simultaneously improved the friction and wear properties of the composites, which contributed to the suitability of the micro-filled composites with hard metallic particles for a wider range of mechanical components for bearing applications.
Peer review: yes
URI: http://hdl.handle.net/10773/39940
DOI: 10.3390/ma16196428
ISSN: 1996-1944
Appears in Collections:TEMA - Artigos
CICECO - Artigos
DEM - Artigos

Files in This Item:
File Description SizeFormat 
materials-16-06428-v2.pdf10.2 MBAdobe PDFView/Open


FacebookTwitterLinkedIn
Formato BibTex MendeleyEndnote Degois 

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.