eprintid: 10192847
rev_number: 9
eprint_status: archive
userid: 699
dir: disk0/10/19/28/47
datestamp: 2024-05-30 11:45:39
lastmod: 2024-11-25 07:10:06
status_changed: 2024-05-30 11:45:39
type: article
metadata_visibility: show
sword_depositor: 699
creators_name: Zhong, Min
creators_name: Duan, Shengzhi
creators_name: Wu, Xiaowen
creators_name: Min, Xin
creators_name: Huang, Zhaohui
creators_name: Fang, Minghao
creators_name: Li, Huanxin
creators_name: Ding, Hao
creators_name: Luo, Bingcheng
title: Enhanced mechanical and tribological properties of low-cost core-shell structured microcrystalline graphite/Cu composites
ispublished: pub
divisions: UCL
divisions: B04
divisions: C05
divisions: F43
keywords: Carbon-coated microcrystalline graphite/Cu; Tribological properties; Solid self-lubrication; Powder metallurgy
note: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
abstract: In the past, microcrystalline graphite (MG) was mainly used for the preparation of carbon enhancers and flame retardant, and is a low value-added inorganic mineral. There are very few reports of MG being compounded with Cu to produce friction materials. Carbon coated microcrystalline graphite/Cu (Carbon@MG/Cu) composites were prepared by coating MG with phenolic resin and mixing it with Cu. The effect of the phenolic resin coating on the mechanical and tribological properties of the composites was investigated by comparison with pure Cu, microcrystalline graphite/Cu (MG/Cu). The hardness and flexural strength of pure Cu were 39.8 HV and 72.3 MPa, respectively. The protection of the amorphous carbon shells led to a significant improvement in the mechanical properties of Carbon@MG/Cu, with hardness and flexural strengths of 72.3 HV and 103.8 MPa. The poor bonding between the MG and Cu severely affects its mechanical properties. Pure Cu has the highest wear rate (10.6 
 10−7(mm3/(N∙m)), while Carbon@MG/Cu has a stable coefficient of friction (0.19) and the lowest wear rate (4.3 × 10−7 (mm3/(N∙m)) compared to pure Cu and MG/Cu. We provide a method to prepare graphite/Cu composites with high mechanical and tribological properties based on low-cost MG, which helps to solve the problem of reuse of MG and increase its industrial added value.
date: 2024-01-15
date_type: published
publisher: Elsevier
official_url: https://doi.org/10.1016/j.wear.2023.205155
oa_status: green
full_text_type: other
language: eng
primo: open
primo_central: open_green
verified: verified_manual
elements_id: 2266627
doi: 10.1016/j.wear.2023.205155
lyricists_name: Li, Huanxin
lyricists_id: HLIPX63
actors_name: Li, Huanxin
actors_id: HLIPX63
actors_role: owner
funding_acknowledgements: 51872268 [National Natural Science Foundation of China]; 52202154 [National Natural Science Foundation of China]
full_text_status: public
publication: Wear
volume: 536
article_number: 205155
pages: 11
issn: 0043-1648
citation:        Zhong, Min;    Duan, Shengzhi;    Wu, Xiaowen;    Min, Xin;    Huang, Zhaohui;    Fang, Minghao;    Li, Huanxin;         ... Luo, Bingcheng; + view all <#>        Zhong, Min;  Duan, Shengzhi;  Wu, Xiaowen;  Min, Xin;  Huang, Zhaohui;  Fang, Minghao;  Li, Huanxin;  Ding, Hao;  Luo, Bingcheng;   - view fewer <#>    (2024)    Enhanced mechanical and tribological properties of low-cost core-shell structured microcrystalline graphite/Cu composites.                   Wear , 536     , Article 205155.  10.1016/j.wear.2023.205155 <https://doi.org/10.1016/j.wear.2023.205155>.       Green open access   
 
document_url: https://discovery.ucl.ac.uk/id/eprint/10192847/1/Enhanced%20mechanical%20and%20tribological%20properties.pdf