Furlan Kaline P, Consoni Deise R, Leite Breno, Dias Matheus V G, Klein Aloisio N
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.
Microsc Microanal. 2017 Oct;23(5):1061-1066. doi: 10.1017/S1431927617012478. Epub 2017 Aug 29.
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.
