Engineering Papers⌕ Search

SEARCH · Engineering Papers

Results for “Ir”

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.

At least 793 records · Page 44
All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on TiIr3 by Materials Project

Ir3Ti is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Ti is bonded to twelve equivalent Ir atoms to form TiIr12 cuboctahedra that share corners with twelve equivalent TiIr12 cuboctahedra, edges with twenty-four equivalent IrTi4Ir8 cuboctahedra, faces with six equivalent TiIr12 cuboctahedra, and faces with twelve equivalent IrTi4Ir8 cuboctahedra. All Ti–Ir bond lengths are 2.74 Å. Ir is bonded to four equivalent Ti and eight equivalent Ir atoms to form distorted IrTi4Ir8 cuboctahedra that share corners with twelve equivalent IrTi4Ir8 cuboctahedra, edges with eight equivalent TiIr12 cuboctahedra, edges with sixteen equivalent IrTi4Ir8 cuboctahedra, faces with four equivalent TiIr12 cuboctahedra, and faces with fourteen equivalent IrTi4Ir8 cuboctahedra. All Ir–Ir bond lengths are 2.74 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on MoIr by Materials Project

IrMo is beta-prime cadmium gold structured and crystallizes in the orthorhombic Pmma space group. The structure is three-dimensional. Mo is bonded to four equivalent Mo and eight equivalent Ir atoms to form MoMo4Ir8 cuboctahedra that share corners with eight equivalent IrMo8Ir4 cuboctahedra, corners with ten equivalent MoMo4Ir8 cuboctahedra, edges with six equivalent MoMo4Ir8 cuboctahedra, edges with twelve equivalent IrMo8Ir4 cuboctahedra, faces with eight equivalent IrMo8Ir4 cuboctahedra, and faces with twelve equivalent MoMo4Ir8 cuboctahedra. All Mo–Mo bond lengths are 2.78 Å. There are a spread of Mo–Ir bond distances ranging from 2.73–2.81 Å. Ir is bonded to eight equivalent Mo and four equivalent Ir atoms to form IrMo8Ir4 cuboctahedra that share corners with eight equivalent MoMo4Ir8 cuboctahedra, corners with ten equivalent IrMo8Ir4 cuboctahedra, edges with six equivalent IrMo8Ir4 cuboctahedra, edges with twelve equivalent MoMo4Ir8 cuboctahedra, faces with eight equivalent MoMo4Ir8 cuboctahedra, and faces with twelve equivalent IrMo8Ir4 cuboctahedra. There are two shorter (2.78 Å) and two longer (2.80 Å) Ir–Ir bond lengths.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on MoIr3 by Materials Project

Ir3Mo is Magnesium-derived structured and crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. Mo is bonded to twelve equivalent Ir atoms to form MoIr12 cuboctahedra that share corners with six equivalent MoIr12 cuboctahedra, corners with twelve equivalent IrMo4Ir8 cuboctahedra, edges with eighteen equivalent IrMo4Ir8 cuboctahedra, faces with eight equivalent MoIr12 cuboctahedra, and faces with twelve equivalent IrMo4Ir8 cuboctahedra. There are six shorter (2.73 Å) and six longer (2.77 Å) Mo–Ir bond lengths. Ir is bonded to four equivalent Mo and eight equivalent Ir atoms to form IrMo4Ir8 cuboctahedra that share corners with four equivalent MoIr12 cuboctahedra, corners with fourteen equivalent IrMo4Ir8 cuboctahedra, edges with six equivalent MoIr12 cuboctahedra, edges with twelve equivalent IrMo4Ir8 cuboctahedra, faces with four equivalent MoIr12 cuboctahedra, and faces with sixteen equivalent IrMo4Ir8 cuboctahedra. There are a spread of Ir–Ir bond distances ranging from 2.73–2.78 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on ThIr2 by Materials Project

ThIr2 is Cubic Laves structured and crystallizes in the cubic Fd-3m space group. The structure is three-dimensional. Th is bonded in a 12-coordinate geometry to twelve equivalent Ir atoms. All Th–Ir bond lengths are 3.20 Å. Ir is bonded to six equivalent Th and six equivalent Ir atoms to form a mixture of face, edge, and corner-sharing IrTh6Ir6 cuboctahedra. All Ir–Ir bond lengths are 2.73 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on CrIr3 by Materials Project

Ir3Cr is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Cr is bonded to twelve equivalent Ir atoms to form CrIr12 cuboctahedra that share corners with twelve equivalent CrIr12 cuboctahedra, edges with twenty-four equivalent IrCr4Ir8 cuboctahedra, faces with six equivalent CrIr12 cuboctahedra, and faces with twelve equivalent IrCr4Ir8 cuboctahedra. All Cr–Ir bond lengths are 2.70 Å. Ir is bonded to four equivalent Cr and eight equivalent Ir atoms to form distorted IrCr4Ir8 cuboctahedra that share corners with twelve equivalent IrCr4Ir8 cuboctahedra, edges with eight equivalent CrIr12 cuboctahedra, edges with sixteen equivalent IrCr4Ir8 cuboctahedra, faces with four equivalent CrIr12 cuboctahedra, and faces with fourteen equivalent IrCr4Ir8 cuboctahedra. All Ir–Ir bond lengths are 2.70 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on CeGe3Ir by Materials Project

CeIrGe3 crystallizes in the tetragonal I4mm space group. The structure is three-dimensional. Ce is bonded in a 12-coordinate geometry to five equivalent Ir and twelve Ge atoms. There are one shorter (3.41 Å) and four longer (3.54 Å) Ce–Ir bond lengths. There are eight shorter (3.23 Å) and four longer (3.49 Å) Ce–Ge bond lengths. Ir is bonded in a 5-coordinate geometry to five equivalent Ce and five Ge atoms. There are one shorter (2.41 Å) and four longer (2.45 Å) Ir–Ge bond lengths. There are two inequivalent Ge sites. In the first Ge site, Ge is bonded in a 2-coordinate geometry to four equivalent Ce, two equivalent Ir, and two equivalent Ge atoms. Both Ge–Ge bond lengths are 2.73 Å. In the second Ge site, Ge is bonded in a 1-coordinate geometry to four equivalent Ce, one Ir, and four equivalent Ge atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

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↗
DOE OSTI2020

Materials Data on DyIr2 by Materials Project

DyIr2 is Cubic Laves structured and crystallizes in the cubic Fd-3m space group. The structure is three-dimensional. Dy is bonded in a 12-coordinate geometry to twelve equivalent Ir atoms. All Dy–Ir bond lengths are 3.14 Å. Ir is bonded to six equivalent Dy and six equivalent Ir atoms to form a mixture of edge, face, and corner-sharing IrDy6Ir6 cuboctahedra. All Ir–Ir bond lengths are 2.68 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on LaIr2 by Materials Project

LaIr2 is Cubic Laves structured and crystallizes in the cubic Fd-3m space group. The structure is three-dimensional. La is bonded in a 12-coordinate geometry to twelve equivalent Ir atoms. All La–Ir bond lengths are 3.21 Å. Ir is bonded to six equivalent La and six equivalent Ir atoms to form a mixture of face, edge, and corner-sharing IrLa6Ir6 cuboctahedra. All Ir–Ir bond lengths are 2.74 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on ErIr2 by Materials Project

ErIr2 is Cubic Laves structured and crystallizes in the cubic Fd-3m space group. The structure is three-dimensional. Er is bonded in a 12-coordinate geometry to twelve equivalent Ir atoms. All Er–Ir bond lengths are 3.13 Å. Ir is bonded to six equivalent Er and six equivalent Ir atoms to form a mixture of corner, edge, and face-sharing IrEr6Ir6 cuboctahedra. All Ir–Ir bond lengths are 2.67 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on YbIr2 by Materials Project

YbIr2 is Cubic Laves structured and crystallizes in the cubic Fd-3m space group. The structure is three-dimensional. Yb is bonded in a 12-coordinate geometry to twelve equivalent Ir atoms. All Yb–Ir bond lengths are 3.12 Å. Ir is bonded to six equivalent Yb and six equivalent Ir atoms to form a mixture of edge, face, and corner-sharing IrYb6Ir6 cuboctahedra. All Ir–Ir bond lengths are 2.66 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on UIr2 by Materials Project

UIr2 is Cubic Laves structured and crystallizes in the cubic Fd-3m space group. The structure is three-dimensional. U is bonded in a 12-coordinate geometry to twelve equivalent Ir atoms. All U–Ir bond lengths are 3.12 Å. Ir is bonded to six equivalent U and six equivalent Ir atoms to form a mixture of edge, face, and corner-sharing IrU6Ir6 cuboctahedra. All Ir–Ir bond lengths are 2.66 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on LuIr2 by Materials Project

LuIr2 is Cubic Laves structured and crystallizes in the cubic Fd-3m space group. The structure is three-dimensional. Lu is bonded in a 12-coordinate geometry to twelve equivalent Ir atoms. All Lu–Ir bond lengths are 3.12 Å. Ir is bonded to six equivalent Lu and six equivalent Ir atoms to form a mixture of edge, corner, and face-sharing IrLu6Ir6 cuboctahedra. All Ir–Ir bond lengths are 2.66 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Si5Ir3 by Materials Project

Ir3Si5 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. there are six inequivalent Ir4+ sites. In the first Ir4+ site, Ir4+ is bonded in a 6-coordinate geometry to six Si+2.40- atoms. There are a spread of Ir–Si bond distances ranging from 2.37–2.52 Å. In the second Ir4+ site, Ir4+ is bonded in a 6-coordinate geometry to seven Si+2.40- atoms. There are a spread of Ir–Si bond distances ranging from 2.35–3.08 Å. In the third Ir4+ site, Ir4+ is bonded in a 8-coordinate geometry to eight Si+2.40- atoms. There are a spread of Ir–Si bond distances ranging from 2.41–2.84 Å. In the fourth Ir4+ site, Ir4+ is bonded in a 8-coordinate geometry to eight Si+2.40- atoms. There are a spread of Ir–Si bond distances ranging from 2.44–2.70 Å. In the fifth Ir4+ site, Ir4+ is bonded to six Si+2.40- atoms to form distorted corner-sharing IrSi6 octahedra. There are a spread of Ir–Si bond distances ranging from 2.37–2.50 Å. In the sixth Ir4+ site, Ir4+ is bonded to seven Si+2.40- atoms to form distorted IrSi7 hexagonal pyramids that share corners with three equivalent IrSi6 octahedra and an edgeedge with one IrSi7 hexagonal pyramid. The corner-sharing octahedra tilt angles range from 55–63°. There are a spread of Ir–Si bond distances ranging from 2.40–2.52 Å. There are ten inequivalent Si+2.40- sites. In the first Si+2.40- site, Si+2.40- is bonded in a 3-coordinate geometry to four Ir4+ and one Si+2.40- atom. The Si–Si bond length is 2.63 Å. In the second Si+2.40- site, Si+2.40- is bonded in a 4-coordinate geometry to four Ir4+ and four Si+2.40- atoms. There are a spread of Si–Si bond distances ranging from 2.54–2.73 Å. In the third Si+2.40- site, Si+2.40- is bonded in a 6-coordinate geometry to five Ir4+ and one Si+2.40- atom. In the fourth Si+2.40- site, Si+2.40- is bonded in a 4-coordinate geometry to four Ir4+ atoms. In the fifth Si+2.40- site, Si+2.40- is bonded in a 4-coordinate geometry to four Ir4+ atoms. In the sixth Si+2.40- site, Si+2.40- is bonded in a 4-coordinate geometry to four Ir4+ and two Si+2.40- atoms. The Si–Si bond length is 2.74 Å. In the seventh Si+2.40- site, Si+2.40- is bonded in a 4-coordinate geometry to four Ir4+ atoms. In the eighth Si+2.40- site, Si+2.40- is bonded in a 4-coordinate geometry to four Ir4+ and one Si+2.40- atom. In the ninth Si+2.40- site, Si+2.40- is bonded in a 4-coordinate geometry to five Ir4+ and three Si+2.40- atoms. The Si–Si bond length is 2.71 Å. In the tenth Si+2.40- site, Si+2.40- is bonded in a 4-coordinate geometry to four Ir4+ and two Si+2.40- atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on LaGe3Ir by Materials Project

LaIrGe3 crystallizes in the tetragonal I4mm space group. The structure is three-dimensional. La is bonded in a 12-coordinate geometry to five equivalent Ir and twelve Ge atoms. There are one shorter (3.47 Å) and four longer (3.56 Å) La–Ir bond lengths. There are a spread of La–Ge bond distances ranging from 3.27–3.49 Å. Ir is bonded in a 5-coordinate geometry to five equivalent La and five Ge atoms. There are one shorter (2.42 Å) and four longer (2.48 Å) Ir–Ge bond lengths. There are two inequivalent Ge sites. In the first Ge site, Ge is bonded in a 2-coordinate geometry to four equivalent La, two equivalent Ir, and two equivalent Ge atoms. Both Ge–Ge bond lengths are 2.76 Å. In the second Ge site, Ge is bonded in a 1-coordinate geometry to four equivalent La, one Ir, and four equivalent Ge atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on NpIr2 by Materials Project

NpIr2 is Cubic Laves structured and crystallizes in the cubic Fd-3m space group. The structure is three-dimensional. Np is bonded in a 12-coordinate geometry to twelve equivalent Ir atoms. All Np–Ir bond lengths are 3.10 Å. Ir is bonded to six equivalent Np and six equivalent Ir atoms to form a mixture of edge, face, and corner-sharing IrNp6Ir6 cuboctahedra. All Ir–Ir bond lengths are 2.64 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on ScIr2 by Materials Project

ScIr2 is Cubic Laves structured and crystallizes in the cubic Fd-3m space group. The structure is three-dimensional. Sc is bonded in a 12-coordinate geometry to twelve equivalent Ir atoms. All Sc–Ir bond lengths are 3.07 Å. Ir is bonded to six equivalent Sc and six equivalent Ir atoms to form a mixture of edge, corner, and face-sharing IrSc6Ir6 cuboctahedra. All Ir–Ir bond lengths are 2.62 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on TaIr3 by Materials Project

Ir3Ta is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Ta is bonded to twelve equivalent Ir atoms to form TaIr12 cuboctahedra that share corners with twelve equivalent TaIr12 cuboctahedra, edges with twenty-four equivalent IrTa4Ir8 cuboctahedra, faces with six equivalent TaIr12 cuboctahedra, and faces with twelve equivalent IrTa4Ir8 cuboctahedra. All Ta–Ir bond lengths are 2.78 Å. Ir is bonded to four equivalent Ta and eight equivalent Ir atoms to form distorted IrTa4Ir8 cuboctahedra that share corners with twelve equivalent IrTa4Ir8 cuboctahedra, edges with eight equivalent TaIr12 cuboctahedra, edges with sixteen equivalent IrTa4Ir8 cuboctahedra, faces with four equivalent TaIr12 cuboctahedra, and faces with fourteen equivalent IrTa4Ir8 cuboctahedra. All Ir–Ir bond lengths are 2.78 Å.

36 MATERIALS SCIENCE↗