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Dong Gang
School of Mechanical Engineering,
Tianjin Professional College,
Tianjin 300402, China
Xiang Zhongxia
Shen Zhaoguang
School of Mechanical Engineering,
Tianjin University,
Tianjin 300072, China |
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APPROACH TO
TRIBOLOGY
PROPERTIES OF THE FRICTION PAIR
OF Si3N4 CERAMIC AND CHILLED
CAST IRON*
Abstract: Tribology properties of the friction pair composed of silicon nitride Si3N4 ceramic and chilled cast iron, which will possibly be used as antiwear materials for automotive engines, are studied. In the experimental design, the method called uniform distribution is adopted to choose the reasonable values of parameters, and wear rates, wear mechanism under unlubricated condition are measured and analyzed. In addition, friction coefficients in different lubricant states are also obtained and compared. The experimental results reveal that fatigue wear is dominant to Si3N4 ceramic, but adhesive wear is obvious to chilled cast iron; the friction coefficients between Si3N4 ceramic and chilled cast iron under unlubricated condition are much bigger than lubricated condition.
Key words:
Si3N4 ceramic Chilled cast iron Wear Friction Uniform Distribution |