Microstructural Characterization of Solid State Reaction Phase Formed During Sintering of Hexagonal Boron Nitride with Iron. (29th August 2017)

• Record Type: Journal Article
• Authors: Furlan, Kaline P.; Consoni, Deise R.; Leite, Breno; Dias, Matheus V. G.; Klein, Aloisio N.
• Is Part Of: Microscopy and microanalysis. Volume 23:Number 5(2017)
• Page Start: 1061
• Page End: 1066
• Publication Date: 2017-08-29
• Subjects: SEM, -- XRD, -- EDS, -- reaction, -- hexagonal boron nitride; Microscopy -- Periodicals; Microchemistry -- Periodicals; 502.82
• DOI: 10.1017/S1431927617012478
• Languages: English
• ISSNs: 1431-9276

Abstract

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.