Synthesis of new transition metal nitrides using solid state oxide precursors: Structures and properties

Conference · Sun Dec 31 04:00:00 EST 1995

OSTI ID:214927

Loye, H.C. zur; Bem, D S; Houmes, J D ^[1]

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1. Massachusetts Institute of Technology, Cambridge, MA (United States)

Solid state nitrides are of interest because they exhibit technologically useful properties. For example, some transition metal nitrides are extremely hard and strong, yet are good conductors of heat and electricity. Others show interesting catalytic properties and the similarity between nitrides and Group VIII metals has been pointed out. Despite the potential technological importance of these materials, only a relatively small number are known. This talk will present some recent developments in ternary nitride synthesis and discuss the preparation and characterization of series of new ternary transition metal nitrides (FeWN{sub 2}, Ta{sub 5}N{sub 6}, Nb{sub 5}N{sub 6}, MnMoN{sub 2}, {alpha}- and {beta}-MnWN{sub 2}) from oxide precursors. The electronic properties and the structures of these nitrides, which were determined by powder X-ray and powder neutron Rietveld refinement, will be discussed. These structures, although distinct, share common motifs, such as layers of MN{sub 6} trigonal prisms and layers of MN{sub 6} octahedra.

• OSTI ID: 214927
• Report Number(s): CONF-950801--
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ELECTRICAL PROPERTIES
IRON NITRIDES
MICROSTRUCTURE
NIOBIUM NITRIDES
SYNTHESIS
TANTALUM NITRIDES
TUNGSTEN NITRIDES