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Friction and Wear Characteristics of H25, H188, H214 Against Hastelloy X

[+] Author Affiliations
M. Bulut Coskun, Serdar Aksoy, Necdet Basaran, Mahmut F. Aksit

Sabanci University, Istanbul, Turkey

Paper No. IJTC2011-61110, pp. 215-217; 3 pages
doi:10.1115/IJTC2011-61110
From:
  • ASME/STLE 2011 International Joint Tribology Conference
  • ASME/STLE 2011 Joint Tribology Conference
  • Los Angeles, California, USA, Oct 24–26, 2011
  • ISBN: 978-0-7918-5474-7
  • Copyright © 2011 by ASME

abstract

Increasing, demand for more efficient power generation forces turbomachinery to operate at higher temperatures and compression ratios. High speeds combined with high temperatures make turbomachinery sealing applications even more challenging. In order to confirm sufficient service life, seal material pairs should be tested similar to engine operating conditions. The high temperature friction and wear characteristics of cobalt superalloys, Haynes 25, 188 and 214 sheets, rubbed against Hastelloy X pins are presented in this work. Tests are conducted at 25, 200 and 400°C with a validated custom design linear reciprocating tribometer. Sliding speed and distance are 1Hz and 1.2 Km respectively. Friction coefficients are calculated with friction force data acquired from load cell and the dead weight where wear coefficient is calculated through mass loss after the tests.

Copyright © 2011 by ASME
Topics: Friction , Wear

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