Effect of HCl concentration on TiB{sub 2} separation from a self-propagating high-temperature synthesis (SHS) product

Journal Article · Thu Feb 15 00:00:00 EST 2007 · Materials Research Bulletin

DOI:https://doi.org/10.1016/j.materresbull.2006.05.032· OSTI ID:21000592

Demircan, Umut ^[1]; Derin, Bora ^[1]; Yuecel, Onuralp ^[1]

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1. Metallurgical and Materials Engineering, Istanbul Technical University, Maslak, Istanbul 34469 (Turkey)

This paper presents a synthesis of TiB{sub 2} powder via self-propagating high-temperature synthesis (SHS) method using a mixture of TiO{sub 2}, B{sub 2}O{sub 3} and Mg followed by acid leaching. In the acid leaching step, the MgO content in the SHS product was leached in different HCl concentrations. X-ray diffraction (XRD) analysis showed that when 9.3 M HCl was used, the leached SHS product was found similar to that of the commercial TiB{sub 2} powder. However, scanning electron microscopy (SEM) and BET surface area analysis revealed that the leached product was agglomerated and exhibited very high surface area.

• OSTI ID: 21000592
• Journal Information: Materials Research Bulletin, Vol. 42, Issue 2; Other Information: DOI: 10.1016/j.materresbull.2006.05.032; PII: S0025-5408(06)00246-7; Copyright (c) 2006 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BORATES
BORON OXIDES
CERAMICS
CHEMICAL PREPARATION
HYDROCHLORIC ACID
LEACHING
MAGNESIUM OXIDES
SCANNING ELECTRON MICROSCOPY
SURFACE AREA
TITANIUM BORIDES
TITANIUM OXIDES
X-RAY DIFFRACTION