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Fabrication and Properties of Cu-Sic-GNP Composites University of Wollongong Research Online University of Wollongong Thesis Collection 2017+ University of Wollongong Thesis Collections 2018 Fabrication and Properties of Cu-SiC-GNP composites Peijie Jia University of Wollongong Follow this and additional works at: https://ro.uow.edu.au/theses1 University of Wollongong Copyright Warning You may print or download ONE copy of this document for the purpose of your own research or study. The University does not authorise you to copy, communicate or otherwise make available electronically to any other person any copyright material contained on this site. You are reminded of the following: This work is copyright. Apart from any use permitted under the Copyright Act 1968, no part of this work may be reproduced by any process, nor may any other exclusive right be exercised, without the permission of the author. Copyright owners are entitled to take legal action against persons who infringe their copyright. A reproduction of material that is protected by copyright may be a copyright infringement. A court may impose penalties and award damages in relation to offences and infringements relating to copyright material. Higher penalties may apply, and higher damages may be awarded, for offences and infringements involving the conversion of material into digital or electronic form. Unless otherwise indicated, the views expressed in this thesis are those of the author and do not necessarily represent the views of the University of Wollongong. Recommended Citation Jia, Peijie, Fabrication and Properties of Cu-SiC-GNP composites, Master of Research thesis, School of Mechanical, Materials, Mechatronic and Biomedical Engineering, University of Wollongong, 2018. https://ro.uow.edu.au/theses1/325 Research Online is the open access institutional repository for the University of Wollongong. For further information contact the UOW Library: [email protected] Fabrication and Properties of Cu-SiC-GNP composites Peijie Jia Supervisors: Prof. Zhengyi Jiang and Dr. Haibo Xie This thesis is presented as part of the requirement for the conferral of the degree: Master of Research University of Wollongong School of Mechanical, Materials, Mechatronic and Biomedical Engineering June 2018 Certification I, Peijie Jia, declare that this thesis submitted in fulfillment of the requirements for the conferral of the degree Master of Research, from the University of Wollongong, is wholly my own work unless otherwise referenced or acknowledged. This document has not been submitted for qualifications at any other academic institution. Peijie Jia 1st June 2018 Table of contents Table of contentsList of figures ..................................................................................... I List of figures ............................................................................................................... IV List of tables ............................................................................................................... VII List of abbreviation and symbol ............................................................................... VIII Abstract ......................................................................................................................... X Acknowledgement ..................................................................................................... XII Chapter 1 Introduction ................................................................................................... 1 1.1 Background ............................................................................................................................. 1 1.2 Scope and objectives ............................................................................................................... 2 1.3 Structure of chapters ............................................................................................................... 2 Chapter 2 Literature review ........................................................................................... 4 2.1 Metal matrix composites (MMCs) .......................................................................................... 4 2.2 MMC reinforced with nanoparticles ....................................................................................... 5 2.3 Metal matrix composites reinforced with ceramic nanoparticles ............................................ 7 2.4 Metal matrix composites reinforced with graphene sheets ................................................... 12 2.5 Graphene/nanoparticles interaction: a road map to manufacture composites with exceptional properties..................................................................................................................................... 19 2.6 Manufacturing processes of metal matrix nanocomposites .................................................. 21 2.6.1 Liquid processes ............................................................................................................. 22 2.6.2 Solid processes ............................................................................................................... 24 2.6.3 Semisolid processes ....................................................................................................... 26 2.7 Strengthening mechanisms of MMnCs ................................................................................. 29 2.7.1 Load transfer effect ........................................................................................................ 29 2.7.2 Hall-Petch strengthening ................................................................................................ 30 2.7.3 Orowan strengthening .................................................................................................... 31 2.7.4 CTE and EM mismatch .................................................................................................. 31 2.7.5 Sum of contributions ...................................................................................................... 32 2.8 Summary ............................................................................................................................... 33 Chapter 3 Experimental methodology ......................................................................... 35 3.1 Sample preparation ............................................................................................................... 35 I 3.1.1 Ball milling .................................................................................................................... 35 3.1.2 Cold pressing and sintering ............................................................................................ 36 3.2 Experiment and analysis ....................................................................................................... 38 3.2.1 Hot mounting, grinding and polishing ........................................................................... 38 3.2.2 KEYENCE laser microscope (3D & profile measurement) and density measuring instrument ............................................................................................................................... 40 3.2.3 X-ray diffraction............................................................................................................. 41 3.2.4 Microhardness testing .................................................................................................... 42 3.2.5 Field emission scanning electron microscopy ................................................................ 43 3.2.6 Compression test ............................................................................................................ 44 Chapter 4 Effect of sintering temperature .................................................................... 45 4.1 Introduction ........................................................................................................................... 45 4.2 Experimental procedure ........................................................................................................ 45 4.3 Results and discussion .......................................................................................................... 45 4.3.1 Pure copper .................................................................................................................... 45 4.3.1.1 Optical images ......................................................................................................... 45 4.3.1.2 Density measurement .............................................................................................. 47 4.3.1.3 Microhardness testing ............................................................................................. 48 4.3.2 Cu-SiC-GNP .................................................................................................................. 49 4.3.2.1 Optical images ......................................................................................................... 49 4.3.2.2 Density measurement .............................................................................................. 50 4.3.2.3 Microhardness testing ............................................................................................. 51 4.4 Summary ............................................................................................................................... 52 Chapter 5 Effect of milling time .................................................................................. 53 5.1 Introduction ..........................................................................................................................
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