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Microstructural Characterization of Solid State Reaction Phase Formed During Sintering of Hexagonal Boron Nitride with Iron

Part of: Micrographia Collection

Published online by Cambridge University Press:  29 August 2017

Kaline P. Furlan ,
Deise R. Consoni ,
Breno Leite ,
Matheus V. G. Dias  and
Aloisio N. Klein
Kaline P. Furlan*
Affiliation:
Materials Laboratory (LabMat), Federal University of Santa Catarina, Florianópolis, Santa Catarina, CP 476, 88040-900, Brazil
Deise R. Consoni
Affiliation:
Materials Laboratory (LabMat), Federal University of Santa Catarina, Florianópolis, Santa Catarina, CP 476, 88040-900, Brazil Electronic Microscopy Central Laboratory (LCME), Federal University of Santa Catarina, Florianópolis, Santa Catarina, 88040-900, Brazil
Breno Leite
Affiliation:
JEOL USA Inc., Peabody, MA 01960, USA
Matheus V. G. Dias
Affiliation:
Materials Laboratory (LabMat), Federal University of Santa Catarina, Florianópolis, Santa Catarina, CP 476, 88040-900, Brazil
Aloisio N. Klein
Affiliation:
Materials Laboratory (LabMat), Federal University of Santa Catarina, Florianópolis, Santa Catarina, CP 476, 88040-900, Brazil
*
*Corresponding author. [email protected]
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Abstract

In the development of dry self-lubricating composites, not only solid lubricant particle size and distribution are important, but also the correct selection of the solid lubricant characteristics, which should be stable, i.e. not reactive, during the whole processing. In this work, Fe+9 vol% h-BN composites were produced by uniaxial cold compaction and sintering, for which a reaction between h-BN and iron was detected after sintering at 1,150°C. The reaction phase was characterized by optical and scanning electron microscopy and identified by X-ray diffraction and energy-dispersive X-ray spectroscopy. The newly formed phase had high hardness when compared with the iron matrix. The resulting composites presented a high friction coefficient and high wear.

Keywords

SEMXRDEDSreactionhexagonal boron nitride
Type
Micrographia
Information
Microscopy and Microanalysis , Volume 23 , Issue 5 , October 2017 , pp. 1061 - 1066
Copyright
© Microscopy Society of America 2017 

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