“Ruthenium boride”的意思、由来-开放百科全书

词条

Ruthenium boride

释义

Structure
References

Ruthenium borides are compounds of ruthenium and boron. Their most remarkable property is potentially high hardness. Vickers hardness H_V = 50 GPa was reported for thin films composed of RuB₂ and Ru₂B₃ phases.^[1] This value is significantly higher than those of bulk RuB₂ or Ru₂B₃, but it has to be confirmed independently, as measurements on superhard materials are intrinsically difficult. For example, note that the initial report on extreme hardness of related material rhenium diboride^[2] was probably too optimistic.^[3]

Structure

Ruthenium diboride was first thought to have a hexagonal structure,^[4] as in rhenium diboride, but it was later tentatively determined to possess an orthorhombic structure.^[5]

References

1. ^J.V. Rau et al. "Deposition and characterization of superhard biphasic ruthenium boride films" [https://dx.doi.org/10.1016/j.actamat.2008.10.009 Acta Materialia 57 (2009) 673]
2. ^{{cite journal|last=Chung|first=Hsiu-Ying|date=April 20, 2007|title=Synthesis of Ultra-Incompressible Superhard Rhenium Diboride at Ambient Pressure|journal=Science|volume=316|issue=5823|pages=436–9|doi=10.1126/science.1139322|pmid=17446399|bibcode = 2007Sci...316..436C |display-authors=etal}}
3. ^J. Qin et al. "Is Rhenium Diboride a Superhard Material?" [https://archive.today/20130105125744/http://www3.interscience.wiley.com/journal/121453064/abstract Adv. Mater. 20 (2008) 4780]
4. ^C. P. Kempter and R. J. Fries "Crystallography of the Ru-B and Os-B Systems" J. Chem. Phys. 34, 1994 (1961)
5. ^R. B. Roof, Jr. and C. P. Kempter "New Orthorhombic Phase in the Ru-B and Os-B Systems" J. Chem. Phys. 37, 1473 (1962)

3 : Ruthenium compounds|Borides|Superhard materials

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