Relation between Lubricated Wear of Ceramics and Acoustic Emission Characteristics

Abstract

For combinations of an Si₃N₄, ball and five kinds of ceramic disks (SiC, Si₃N₄ Al₂O₃, ZrO₂, TiC), friction and wear tests were performed in oleic acid at a flow rate of 0.08 g/h in order to find the relationship between the wear mechanism of balls and the degree of the surface damage estimated from the topographical analysis of the worn surfaces. The relationship between the surface damage and AE event count rates were also obtained considering the various parameters of the worn surface topographies. The results show that AE event count rates correspond to the wear rate of balls and are influenced by the topographical parameters of worn surfaces and the surface layers such as oxidized oleic acid layers.

Presented as a Society of Tribologists and Lubrication Engineers paper at the World Tribology Congress in London, United Kingdom, September 8–12, 1997

KEY WORDS:

• Ceramics
• Acoustic Diagnostics
• Boundary Lubrication
• Wear
• Surface Analytical Techniques
• Physical

Notes

Presented as a Society of Tribologists and Lubrication Engineers paper at the World Tribology Congress in London, United Kingdom, September 8–12, 1997