Conversion of diamond polishing powder to high-density isotropic nano-crystalline graphite through spark plasma sintering

Conversion of diamond polishing powders into graphite nano-crystals and simultaneous densification to high-density graphite were achieved through spark plasma sintering at 2000 °C with 45 MPa pressure. The sintered graphite had a density of 1.84 g/cm 3 and hardness of 12.1 ± 0.4 HV. The phase evolut...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Veröffentlicht in:	SN applied sciences 2020-05, Vol.2 (5), p.835, Article 835
Hauptverfasser:	Alexander, Rajath, Ravikanth, K. V., Gonal, M. R., Srivastava, A. P., Dasgupta, Kinshuk
Format:	Artikel
Sprache:	eng
Schlagworte:	4. Materials (general) Applied and Technical Physics Chemistry/Food Science Conversion Crystals Densification Diamond polishing Earth Sciences Electron microscopy Engineering Environment Graphite High density Materials Science Nanocrystals Plasma sintering Raman spectroscopy Scanning electron microscopy Short Communication Sintering (powder metallurgy) Spark plasma sintering Temperature Transmission electron microscopy X-ray diffraction
Online-Zugang:	Volltext
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	Conversion of diamond polishing powders into graphite nano-crystals and simultaneous densification to high-density graphite were achieved through spark plasma sintering at 2000 °C with 45 MPa pressure. The sintered graphite had a density of 1.84 g/cm 3 and hardness of 12.1 ± 0.4 HV. The phase evolution was characterized by X-ray diffraction and Raman spectroscopy. Scanning electron microscopy and transmission electron microscopy revealed that the converted high-density graphite consisted of randomly oriented nano-crystalline grains. The formed graphite was also isotropic in nature.
ISSN:	2523-3963 2523-3971
DOI:	10.1007/s42452-020-2661-z