Excellent Tribological Properties of Lower Reduced Graphene Oxide Content Copper Composite by Using a One-Step Reduction Molecular-Level Mixing Process

被引：35

作者：

Nie, Haibin ^{[1
]}

Fu, Licai ^{[1
]}

Zhu, Jiajun ^{[1
]}

Yang, Wulin ^{[1
]}

Li, Deyi ^{[1
]}

Zhou, Lingping ^{[1
,2
]}

机构：

[1] Hunan Univ, Coll Mat Sci & Engn, Changsha 410082, Hunan, Peoples R China

[2] Hunan Prov Key Lab Spray Deposit Technol & Applic, Changsha 410082, Hunan, Peoples R China

来源：

MATERIALS | 2018年 / 11卷 / 04期

基金：

中国国家自然科学基金;

关键词：

copper; reduced graphene oxide; network structure; tribological properties; ENHANCED MECHANICAL-PROPERTIES; REINFORCEMENT ARCHITECTURE; GRAPHITE COMPOSITES; MATRIX COMPOSITES; WEAR; FRICTION; MICROSTRUCTURE; NANOPLATELETS; CONDUCTIVITY; NANOSHEETS;

D O I：

10.3390/ma11040600

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Reduced graphene oxide (RGO) composite copper matrix powders were fabricated successfully by using a modified molecular-level mixing (MLM) method. Divalent copper ions (Cu2+) were adsorbed in oxygen functional groups of graphene oxide (GO) as a precursor, then were reduced simultaneously by one step chemical reduction. RGO showed a distribution converting from a random to a three-dimensional network in the copper matrix when its content increased to above 1.0 wt.% The tribological tests indicated that the friction coefficient of the composite with 1.0 wt.% RGO decreased markedly from 0.6 to 0.07 at an applied load of 10 N, and the wear rate was about one-third of pure copper. The excellent tribological properties were attributed to a three-dimensional and uniform distribution, which contributes to improving toughness and adhesion strength.

引用

页数：14

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