The effects of materials combination and surface roughness in lubricated silicon nitride/steel rolling fatigue

Authors: Kang, J., Hadfield, M. and Ahmed, R.

Journal: Materials and Design

Volume: 24

Issue: 1

Pages: 1-13

ISSN: 0264-1275

Abstract:

Four kinds of commercially finished 12.7 mm HIPed silicon nitride bearing balls with surface roughness values R a ranging a from 0.002 to 0.016 μm were tested using a four-ball rolling configuration. They were rolling against two types of steel testing balls with different surface roughness and hardness, in fully lubricated condition at a maximum compressive stress of 6.58 GPa and at a speed of 10 000 rpm for over 135 million stress cycles. Rolling track surfaces were examined by microscope, SEM, 3-D surface analysis and interference profilometry. Experiment results show that the composite surface roughness are most influential. The shape of the surface topography of silicon nitride are not very sensitive. The slight difference in steel hardness may lead to significant differences in steel fatigue life. © 2002 Elsevier Science Ltd. All rights reserved.

Source: Scopus

The effects of material combination and surface roughness in lubricated silicon nitride/steel rolling contact fatigue

Authors: Kang, J., Hadfield, M. and Ahmed, R.

Journal: MATERIALS & DESIGN

Volume: 24

Issue: 1

Pages: 1-13

ISSN: 0261-3069

DOI: 10.1016/S0261-3069(02)00102-4

Source: Web of Science (Lite)

The effects of material combination and surface roughness in lubricated silicon nitride/steel rolling contact fatigue

Authors: Ahmed, R., Hadfield, M. and Kang, J.

Journal: Materials and Design

Volume: 24

Pages: 1-13

ISSN: 0261-3069

DOI: 10.1016/S0261-3069(02)00102-4

Abstract:

Four kinds of commercially finished 12.7 mm HIPed silicon nitride bearing balls with surface roughness values Ra ranging from 0.002 to 0.016 μm were tested using a four-ball rolling configuration. They were rolling against two types of steel testing balls with different surface roughness and hardness, in fully lubricated condition at a maximum compressive stress of 6.58 GPa and at a speed of 10 000 rpm for over 135 million stress cycles. Rolling track surfaces were examined by microscope, SEM, 3-D surface analysis and interference profilometry. Experiment results show that the composite surface roughness are most influential. The shape of the surface topography of silicon nitride are not very sensitive. The slight difference in steel hardness may lead to significant differences in steel fatigue life.

http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6TX5-47S5HVG-1&_user=1682380&_coverDate=02%2F28%2F2003&_rdoc=1&_fmt=&_orig=search&_sort=d&view=c&_acct=C000011378&_version=1&_urlVersion=0&_userid=1682380&md5=9b3c418c098bd6c91f1c3c7e7b18dfbc

Source: Manual

Preferred by: Mark Hadfield