Search NASA⌕ Search

SEARCH · Search NASA

Results for “Ir-Nb”

Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

Materials Data on NbIr3 by Materials Project

Ir3Nb is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Nb is bonded to twelve equivalent Ir atoms to form NbIr12 cuboctahedra that share corners with twelve equivalent NbIr12 cuboctahedra, edges with twenty-four equivalent IrNb4Ir8 cuboctahedra, faces with six equivalent NbIr12 cuboctahedra, and faces with twelve equivalent IrNb4Ir8 cuboctahedra. All Nb–Ir bond lengths are 2.78 Å. Ir is bonded to four equivalent Nb and eight equivalent Ir atoms to form distorted IrNb4Ir8 cuboctahedra that share corners with twelve equivalent IrNb4Ir8 cuboctahedra, edges with eight equivalent NbIr12 cuboctahedra, edges with sixteen equivalent IrNb4Ir8 cuboctahedra, faces with four equivalent NbIr12 cuboctahedra, and faces with fourteen equivalent IrNb4Ir8 cuboctahedra. All Ir–Ir bond lengths are 2.78 Å.

36 MATERIALS SCIENCE↗

Materials Data on NbIr by Materials Project

IrNb is Tetraauricupride structured and crystallizes in the tetragonal P4/mmm space group. The structure is three-dimensional. Nb is bonded to eight equivalent Ir atoms to form a mixture of distorted edge, corner, and face-sharing NbIr8 cuboctahedra. All Nb–Ir bond lengths are 2.82 Å. Ir is bonded to eight equivalent Nb atoms to form a mixture of distorted edge, corner, and face-sharing IrNb8 cuboctahedra.

36 MATERIALS SCIENCE↗

Materials Data on Nb3Ir by Materials Project

Nb3Ir crystallizes in the cubic Pm-3n space group. The structure is three-dimensional. Nb is bonded in a 6-coordinate geometry to two equivalent Nb and four equivalent Ir atoms. Both Nb–Nb bond lengths are 2.59 Å. All Nb–Ir bond lengths are 2.90 Å. Ir is bonded to twelve equivalent Nb atoms to form a mixture of face and edge-sharing IrNb12 cuboctahedra.

36 MATERIALS SCIENCE↗