The influence of solid lubricant on tribological properties of sintered Ni-20%CaF2 composite material

被引：30
|
作者：
Kotkowiak, M. [1 ]
Piasecki, A. [1 ]
Kulka, M. [1 ]
机构：
[1] Poznan Univ Tech, Inst Mat Sci & Engn, Pl M Sklodowskiej Curie 5, PL-60965 Poznan, Poland
来源：
CERAMICS INTERNATIONAL | 2019年 / 45卷 / 14期
关键词：
Calcium fluoride; Self-lubricating material; Friction coefficient; Wear mechanism; AL2O3/TIC/CAF2 CERAMIC COMPOSITES; MECHANICAL-PROPERTIES; FRICTION BEHAVIOR; SELF-LUBRICATION; SURFACE-LAYERS; BEARING STEEL; WEAR BEHAVIOR; AISI; 52100; COATINGS; CAF2;
D O I：
10.1016/j.ceramint.2019.05.262
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：
Powder metallurgy was used in order to produce Ni-20%CaF2 self-lubricating composite. Ni powder was mixed with 20 wt% of CaF2 powder. The powder mixture was pressed by the hydraulic press and sintered in the furnace with an inert atmosphere (Ar). Sintering was carried out at temperature of 1200 degrees C (1473 K) for 2 h. The sintered samples were subjected to wear tests at various temperatures using a pin-on-disc method. SEM and EDS techniques were used to analyze the surface of the samples after the pin-on-disc experiment. During the wear process, the tribofilm was produced on the surface of the composite containing calcium fluoride and caused a decrease in the friction coefficient. Therefore, the composite with CaF2 addition showed less wear than pure Ni.
引用
收藏
页码：17103 / 17113
页数：11
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