In search of the elusive IrB{sub 2}: Can mechanochemistry help?

Journal Article · Fri Jan 15 00:00:00 EST 2016 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/J.JSSC.2015.10.018· OSTI ID:22573998

Xie, Zhilin ^[1]; Blair, Richard G. ^[1]; Orlovskaya, Nina ^[1]; Cullen, David A. ^[2]; Lapidus, Saul H. ^[3]; Kata, Dariusz; Rutkowski, Paweł; Lis, Jerzy ^[4]

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1. Department of Mechanical and Aerospace Engineering, University of Central Florida, Orlando, FL 32816 (United States)
2. Materials Science & Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831 (United States)
3. X-ray Science Division, Advanced Photon Source, Argonne National Laboratory, Argonne, IL 60439 (United States)
4. AGH University of Science and Technology in Krakow, Faculty of Materials Science and Ceramics, Department of Ceramics and Refractories, al. Mickiewicza 30, 30-059 Krakow (Poland)

The previously unknown hexagonal ReB{sub 2}-type IrB{sub 2} diboride and orthorhombic IrB monoboride phases were produced by mechanochemical syntheses. High energy ball milling of elemental Ir and B powder for 30 h, followed by annealing of the powder at 1050 °C for 48 h, resulted in the formation of the desired phases. Both traditional laboratory and high resolution synchrotron X-ray diffraction (XRD) analyses were used for phase identification of the synthesized powder. In addition to XRD, scanning electron microscopy and transmission electron microscopy were employed to further characterize the microstructure of the phases produced. - Graphical abstract: ReB{sub 2}-type IrB{sub 2} and a new IrB have been successfully synthesized for the first time using mechanochemical method. Crystal structures of IrB{sub 2} and IrB were studied by synchrotron X-ray diffraction. Microstructures of the new phases were characterized by SEM and TEM. - Highlights: • ReB{sub 2}-type IrB{sub 2} and a new IrB have been synthesized by mechanochemical method. • Crystal structures of IrB{sub 2} and IrB were studied by synchrotron XRD. • Microstructures of the new phases were characterized by SEM and TEM.

• OSTI ID: 22573998
• Journal Information: Journal of Solid State Chemistry, Vol. 233; Other Information: Copyright (c) 2015 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0022-4596
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ANNEALING
BORON COMPOUNDS
CERAMICS
CRYSTALS
ELECTRON SCANNING
ELECTRONS
IRIDIUM
MICROSTRUCTURE
ORTHORHOMBIC LATTICES
POWDERS
SCANNING ELECTRON MICROSCOPY
SYNCHROTRONS
SYNTHESIS
TRANSMISSION ELECTRON MICROSCOPY
X RADIATION
X-RAY DIFFRACTION