Rapid in situ formation and densification of titanium boride (TiB) nano-ceramic via transient liquid phase in electric field activated sintering. (October 2016)

• Record Type: Journal Article
• Authors: Du, J.; Sanders, A.P.; Jindal, V.; Chandran, K.S. Ravi
• Is Part Of: Scripta materialia. Volume 123(2016)
• Page Start: 95
• Page End: 99
• Publication Date: 2016-10
• Subjects: Titanium boride -- Electric field -- Reactive sintering -- Low temperature -- Densification; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2016.06.010
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract: Rapid in situ synthesis of bulk nanostructured titanium boride (TiB) ceramic, at the lowest possible processing temperature, is demonstrated. Using electric-field-activated-sintering (EFAS), nanoscale TiB whiskers were formed and densified uniformly throughout the volume, from a mixture of micron-sized Ti, TiB2 and FeMo powders, at 1100 °C in 30 min and at a relatively low pressure. Microstructure and X-ray diffraction (XRD) analysis, revealing the formation of TiB whiskers in this rapid processing condition, are presented. The formation of a transitional quaternary liquid phase, facilitated by localized joule heating at particle contacts, are hypothesized as contributors to rapid and low-temperature synthesis. Graphical abstract: