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HomeMaterials Science ForumMaterials Science Forum Vols. 704-705Interfacial Friction of Ceramics at High...

Interfacial Friction of Ceramics at High Temperature Ring-Compression Test

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Abstract:

Using ring compression tests, the interfacial friction and flow stress of 3Y-TZP/Al₂O₃ composite at elevated temperatures were investigated. Theoretical calibration curves of the friction factor and the relative average pressure curves for the ring compression tests of 6:3:2 standard rings were drawn based on a velocity field capable of describing the bulge phenomena. The lubricant was the boron nitride (hexagonal). The tests were adopted at temperature range of 1400°C-1600°C. Results indicate that the interfacial friction factor has the value in the range of 0.34-0.49, so that boron nitride lubricant can be used effectively in present temperatures. As two extremely important parameters, the temperature and strain rate have no significant effect on the fraction factor. It is proved reliable that the ring-compression test at 1400°C and even higher is used to evaluate the performance of boron nitride lubricant.

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Periodical:

Materials Science Forum (Volumes 704-705)

Pages:

967-972

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.704-705.967

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Online since:

December 2011

Authors:

Hui Gai Wang, Yan Pei Song, Fei Wang, Kai Feng Zhang

Keywords:

3Y-TZP/Al₂O₃ Ceramic, Friction Factor, Hexagonal Boron Nitride (HBN), Ring Compression Test

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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