Chemical bonding in epitaxial ZrB 2 studied by X-ray spectroscopy

Martin Magnuson, Lina Tengdelius, Grzegorz Greczynski, Lars Hultman, Hans Högberg
  • Thin Solid Films, March 2018, Elsevier
  • DOI: 10.1016/j.tsf.2018.01.021

Chemical bonding in epitaxial ZrB2 studied by X-ray spectroscopy

What is it about?

How boron forms borides with electropositive elements i.e., most metals

Why is it important?

Bulk ZrB2: ultrahigh temperature applications, hypersonic airplane protective shields for hypersonic space vehicles, atmospheric reentry, rocket propulsion. Thin film ZrB2/TiB2: for machining of Al alloys in automobile, aerospace industry, telecommunications industries, hard coatings for cutting tool applications Thin film ZrB2 is a potential high-temperature electrical contact material with better ductility compared to ZrC and ZrN. Thin film ZrB2 2D boridene; compare to graphene and MXene

Perspectives

Associate Prof. Martin Magnuson (Author)
Department of Physics, Chemistry and Biology (IFM)

Thin films provide better means than bulk to study the composition dependent chemical bonding and hybridization as a function of boron content Thin film experimental electronic structure studies of the Zr-Zr, Zr-B chemical bonding has been lacking The local short-range order atomic coordination symmetry can be probed with XANES and EXAFS that are complementary tools to long-range order XRD XANES gives quantitative average oxidation state, information about coordination symmetry EXAFS gives quantitative average bond length, coordination number, mean-square disorder

Read Publication

http://dx.doi.org/10.1016/j.tsf.2018.01.021

The following have contributed to this page: Associate Prof. Martin Magnuson