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Microstructure and wear performance of alumina/graphene coating on textured Al2O3/TiC substrate composites
被引:22
作者:
Liu, Changxia
[1
,2
]
Sun, Junlong
[1
,2
]
Venturi, Federico
[2
]
Romero, Acacio Rincon
[2
]
Hussain, Tanvir
[2
]
机构:
[1] Ludong Univ, Sch Transportat, Yantai 264025, Shandong, Peoples R China
[2] Univ Nottingham, Fac Engn, Nottingham NG7 2RD, England
基金:
中国国家自然科学基金;
英国工程与自然科学研究理事会;
关键词:
SHVOF;
Graphene nanoplatelets;
Al2O3/TiC substrate composites;
Wear performance;
Micro texture;
LASER-INDUCED OXIDATION;
TRIBOLOGICAL PROPERTIES;
MECHANICAL-PROPERTIES;
GRAPHENE;
BEHAVIOR;
TITANIUM;
TIO2;
TOOL;
FRICTION;
FABRICATION;
D O I:
10.1016/j.jeurceramsoc.2020.09.063
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 incorporation of graphene-based nanodispersoids in ceramic coatings is known to enhance the wear behavior of these materials. In this study, for the first time, alumina/graphene nanoplatelets (GNPs) coatings were deposited through Suspension High Velocity Oxy-Fuel (SHVOF) thermal spray on Al2O3/TiC substrate composites, which were laser microtextured with grid and line surface patterns. Dense coatings with around 8-10 mu m thickness were obtained by spraying alumina suspension containing 1 wt. % GNPs. The tribological performance of the alumina/GNPs coatings on the Al2O3/TiC substrate composites was evaluated using ball-on-disc sliding wear tests. The alumina/GNPs coated Al2O3/TiC substrate composites textured with grid pattern showed the best tribological performance reaching a steady coefficient of friction (CoF) at lower sliding distances and presenting the lowest wear rate of the Al2O3/TiC substrate composites and the counterbody.
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页码:1438 / 1451
页数:14
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