Fabrication of TiB{sub 2} and TiB{sub 2}/FeB composites by mechanically activated borothermic reduction of ilmenite

Journal Article · Mon Apr 01 00:00:00 EST 1996 · Journal of Materials Research

DOI:https://doi.org/10.1557/JMR.1996.0120· OSTI ID:282875

Millet, P ^[1]; Hwang, T ^[2]

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1. Department of Applied Mathematics and Electronic Materials Engineering, Research School of Physical Sciences and Engineering, The Australian National University, Canberra, ACT 0200 (Australia)
2. Department of Electronic Materials Engineering, Research School of Physical Sciences and Engineering, The Australian National University, Canberra, ACT 0200 (Australia)

TiB{sub 2} and TiB{sub 2}/FeB composites have been formed at temperatures below 1000{degree}C, directly from ilmenite sand by reaction with amorphous boron. The structural transformations occurring during high-energy mechanical milling pretreatment and subsequent annealing of different mixtures of the constituents have been studied. On heating at temperature below 800{degree}C, complete borothermic reduction of the ilmenite structure is accomplished. The mixture so obtained with ilmenite-boron ratio equal to 1/6 undergoes a sequence of reactions on further heating to form TiB{sub 2}, FeB, and the amorphous phase B{sub 2}O{sub 2}. {copyright} {ital 1996 Materials Research Society.}

• OSTI ID: 282875
• Journal Information: Journal of Materials Research, Vol. 11, Issue 4; Other Information: PBD: Apr 1996
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COMPOSITE MATERIALS
FABRICATION
TITANIUM BORIDES
SYNTHESIS
CERAMICS
IRON BORIDES
ILMENITE
REDUCTION
ANNEALING
CHEMICAL REACTION KINETICS
PHASE TRANSFORMATIONS
AMORPHOUS STATE