Tribological behavior of graphene nanoplatelet reinforced 3YTZP composites

被引：23
作者：
Gutierrez-Mora, F. [1 ,2 ]
Morales-Rodriguez, A. [1 ,2 ]
Gallardo-Lopez, A. [1 ,2 ]
Poyato, R. [1 ,2 ]
机构：
[1] Univ Seville, Dept Fis Mat Condensada, Apdo 1065, E-41080 Seville, Spain
[2] Inst Ciencia Mat Sevilla CSIC US, Americo Vespucio 49, Seville 41092, Spain
来源：
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2019年 / 39卷 / 04期
关键词：
3YTZP; Graphene; Carbon nanophases; Friction; Wear resistance; MECHANICAL-PROPERTIES; ELECTRICAL-CONDUCTIVITY; THERMAL-PROPERTIES; WEAR BEHAVIOR; ALUMINA; MICROSTRUCTURE; CERAMICS; FRICTION;
D O I：
10.1016/j.jeurceramsoc.2018.11.005
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The tribological behavior of graphene nanoplatelet (GNP) reinforced 3 mol% yttria tetragonal zirconia polycrystals (3YTZP) composites with different GNP content (2.5, 5 and 10 vol%) was analyzed and discussed. Their dry sliding behavior was studied using a ball-on-disk geometry with zirconia balls as counterparts, using loads between 2 and 20 N at ambient conditions and compared to the behavior of a monolithic 3YTZP ceramic used as a reference material. The composites showed lower friction coefficients and higher wear resistance than the monolithic 3YTZP. An outstanding performance was achieved at 10 N, where the friction coefficient decreased from 0.6 to 0.3 and the wear rates decreased 3 orders of magnitude in comparison with the monolithic ceramic. A layer adhered to the worn surface was found for all the composites, but it did not acted as a lubricating film. The composites with the lowest GNP content showed an overall improved tribological behavior.
引用
收藏
页码：1381 / 1388
页数：8
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