In search of the elusive IrB2: Can mechanochemistry help?

Zhilin Xie; Richard G. Blair; Nina Orlovskaya; David A. Cullen; Saul H. Lapidus; Dariusz Kata; Paweł Rutkowski; Jerzy Lis

doi:10.1016/j.jssc.2015.10.018

In search of the elusive IrB₂: Can mechanochemistry help?

Zhilin Xie, Richard G. Blair, Nina Orlovskaya, David A. Cullen, Saul H. Lapidus, Dariusz Kata, Paweł Rutkowski, Jerzy Lis

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

Abstract

The previously unknown hexagonal ReB₂-type IrB₂ 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.

Original language	English
Pages (from-to)	108-119
Number of pages	12
Journal	Journal of Solid State Chemistry
Volume	233
DOIs	https://doi.org/10.1016/j.jssc.2015.10.018
State	Published - Jan 1 2016

Funding

This work was supported by NSF project DMR – 0748364 . Electron microscopy was performed as part of a user project supported by ORNL's Center for Nanophase Materials Sciences (CNMS), which is a DOE Office of Science User Facility. Use of the Advanced Photon Source at Argonne National Laboratory was supported by the U.S. Department of Energy , Office of Science, Office of Basic Energy Sciences, under Contract no. DE-AC02-06CH11357 . We would also like to thank the DEM Solution Academic Partner program for providing reduced cost access to DEM software, which was used for modeling of ball movement and stress distribution during high energy ball mill operation.

Keywords

Ceramics
Iridium diboride
Mechanochemistry

Access to Document

10.1016/j.jssc.2015.10.018

Cite this

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title = "In search of the elusive IrB2: Can mechanochemistry help?",

abstract = "The previously unknown hexagonal ReB2-type IrB2 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.",

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AU - Lapidus, Saul H.

AU - Kata, Dariusz

AU - Rutkowski, Paweł

AU - Lis, Jerzy

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AB - The previously unknown hexagonal ReB2-type IrB2 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.

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