Engineering Papers⌕ Search

SEARCH · Engineering Papers

Results for “Ir-Pd”

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.

2 records
All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on IrPd3 by Materials Project

Pd3Ir is Copper-derived structured and crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Ir is bonded to twelve Pd atoms to form IrPd12 cuboctahedra that share corners with four equivalent IrPd12 cuboctahedra, corners with eight equivalent PdIr4Pd8 cuboctahedra, edges with eight equivalent IrPd12 cuboctahedra, edges with sixteen equivalent PdIr4Pd8 cuboctahedra, faces with four equivalent IrPd12 cuboctahedra, and faces with fourteen PdIr4Pd8 cuboctahedra. There are eight shorter (2.77 Å) and four longer (2.79 Å) Ir–Pd bond lengths. There are two inequivalent Pd sites. In the first Pd site, Pd is bonded to four equivalent Ir and eight Pd atoms to form PdIr4Pd8 cuboctahedra that share corners with twelve equivalent PdIr4Pd8 cuboctahedra, edges with eight equivalent IrPd12 cuboctahedra, edges with sixteen PdIr4Pd8 cuboctahedra, faces with four equivalent IrPd12 cuboctahedra, and faces with fourteen PdIr4Pd8 cuboctahedra. There are four shorter (2.77 Å) and four longer (2.79 Å) Pd–Pd bond lengths. In the second Pd site, Pd is bonded to four equivalent Ir and eight equivalent Pd atoms to form PdIr4Pd8 cuboctahedra that share corners with four equivalent PdIr4Pd8 cuboctahedra, corners with eight equivalent IrPd12 cuboctahedra, edges with twenty-four PdIr4Pd8 cuboctahedra, faces with six equivalent IrPd12 cuboctahedra, and faces with twelve PdIr4Pd8 cuboctahedra.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on IrPd by Materials Project

PdIr is Copper-derived structured and crystallizes in the trigonal R-3m space group. The structure is three-dimensional. there are three inequivalent Ir sites. In the first Ir site, Ir is bonded to six equivalent Ir and six equivalent Pd atoms to form IrIr6Pd6 cuboctahedra that share corners with twelve IrIr6Pd6 cuboctahedra, edges with twelve IrIr6Pd6 cuboctahedra, edges with twelve equivalent PdIr6Pd6 cuboctahedra, faces with six equivalent IrIr6Pd6 cuboctahedra, and faces with twelve equivalent PdIr6Pd6 cuboctahedra. All Ir–Ir bond lengths are 2.76 Å. All Ir–Pd bond lengths are 2.76 Å. In the second Ir site, Ir is bonded to six equivalent Ir and six Pd atoms to form IrIr6Pd6 cuboctahedra that share corners with five equivalent PdIr6Pd10 cuboctahedra, corners with twelve IrIr6Pd6 cuboctahedra, edges with ten PdIr6Pd6 cuboctahedra, edges with twelve IrIr6Pd6 cuboctahedra, faces with six equivalent IrIr6Pd6 cuboctahedra, and faces with fifteen PdIr6Pd6 cuboctahedra. All Ir–Ir bond lengths are 2.76 Å. All Ir–Pd bond lengths are 2.76 Å. In the third Ir site, Ir is bonded to six equivalent Ir and six Pd atoms to form IrIr6Pd6 cuboctahedra that share corners with five equivalent PdIr6Pd10 cuboctahedra, corners with twelve IrIr6Pd6 cuboctahedra, edges with ten PdIr6Pd6 cuboctahedra, edges with twelve IrIr6Pd6 cuboctahedra, faces with six equivalent IrIr6Pd6 cuboctahedra, and faces with fifteen PdIr6Pd6 cuboctahedra. All Ir–Ir bond lengths are 2.76 Å. All Ir–Pd bond lengths are 2.76 Å. There are two inequivalent Pd sites. In the first Pd site, Pd is bonded to six Ir and six equivalent Pd atoms to form PdIr6Pd6 cuboctahedra that share corners with twelve PdIr6Pd6 cuboctahedra, edges with twelve IrIr6Pd6 cuboctahedra, edges with twelve PdIr6Pd6 cuboctahedra, faces with six equivalent PdIr6Pd6 cuboctahedra, and faces with twelve IrIr6Pd6 cuboctahedra. All Pd–Pd bond lengths are 2.76 Å. In the second Pd site, Pd is bonded to six Ir and ten equivalent Pd atoms to form PdIr6Pd10 cuboctahedra that share corners with ten IrIr6Pd6 cuboctahedra, corners with twelve PdIr6Pd6 cuboctahedra, edges with eight IrIr6Pd6 cuboctahedra, edges with sixteen PdIr6Pd6 cuboctahedra, faces with sixteen equivalent PdIr6Pd10 cuboctahedra, and faces with eighteen IrIr6Pd6 cuboctahedra. There are a spread of Pd–Pd bond distances ranging from 2.76–5.52 Å.

36 MATERIALS SCIENCE↗