ISSN:
1573-4803
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Abstract Sliding tests were conducted, in air, of YTZP ceramic pins against steel discs at an applied pressure of 15.5 MPa over a speed range of 0.3 to 4.0 ms−1. Pin wear was not detectable until 2.0 m s−1, after which a finite but small wear rate was observed at 3.0 m s−1, accompanied by a red glow at the contacting surface. A transition in wear behaviour and friction (μ) occurred at 4.0 ms−1, increasing the former by over two orders of magnitude. Both μ and wear behaviour changed with time at 4.0 m s−1. During initial periods μ was high and wear rate increased steadily with time accompanied by ceramic transfer onto the disc, which increased with time. When disc coverage exceeds a certain threshold value, μ decreased rapidly and the wear rate stabilized at a very high value. Metal transfer was not observed at any speed. High surface temperatures brought about significant adhesion between TZP and steel and this together with enhanced plastic deformation brought about a transition in wear behaviour.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00353025
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