Engineering Papers⌕ Search

SEARCH · Engineering Papers

Results for “B-Ir-Zr”

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.

3 records
All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on Zr2BIr6 by Materials Project

Zr2Ir6B crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. Zr is bonded to twelve equivalent Ir atoms to form ZrIr12 cuboctahedra that share corners with twelve equivalent ZrIr12 cuboctahedra, faces with six equivalent ZrIr12 cuboctahedra, and faces with four equivalent BIr6 octahedra. All Zr–Ir bond lengths are 2.88 Å. Ir is bonded in a 5-coordinate geometry to four equivalent Zr and one B atom. The Ir–B bond length is 2.10 Å. B is bonded to six equivalent Ir atoms to form BIr6 octahedra that share faces with eight equivalent ZrIr12 cuboctahedra.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on ZrB4Ir3 by Materials Project

ZrIr3B4 crystallizes in the hexagonal P6_3/m space group. The structure is three-dimensional. Zr2+ is bonded in a 9-coordinate geometry to nine equivalent B3- atoms. There are three shorter (2.62 Å) and six longer (2.64 Å) Zr–B bond lengths. Ir+3.33+ is bonded in a 6-coordinate geometry to six B3- atoms. There are a spread of Ir–B bond distances ranging from 2.17–2.46 Å. There are two inequivalent B3- sites. In the first B3- site, B3- is bonded in a body-centered cubic geometry to six equivalent Ir+3.33+ and two equivalent B3- atoms. Both B–B bond lengths are 1.77 Å. In the second B3- site, B3- is bonded in a 9-coordinate geometry to three equivalent Zr2+, four equivalent Ir+3.33+, and two equivalent B3- atoms. Both B–B bond lengths are 2.24 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Zr4(B5Ir4)3 by Materials Project

Zr4(Ir4B5)3 crystallizes in the triclinic P-1 space group. The structure is three-dimensional. there are two inequivalent Zr2+ sites. In the first Zr2+ site, Zr2+ is bonded in a 9-coordinate geometry to nine B3- atoms. There are a spread of Zr–B bond distances ranging from 2.58–2.66 Å. In the second Zr2+ site, Zr2+ is bonded in a 9-coordinate geometry to nine B3- atoms. There are a spread of Zr–B bond distances ranging from 2.56–2.67 Å. There are six inequivalent Ir+3.08+ sites. In the first Ir+3.08+ site, Ir+3.08+ is bonded to five B3- atoms to form a mixture of distorted edge and corner-sharing IrB5 trigonal bipyramids. There are a spread of Ir–B bond distances ranging from 2.16–2.41 Å. In the second Ir+3.08+ site, Ir+3.08+ is bonded in a distorted hexagonal planar geometry to six B3- atoms. There are a spread of Ir–B bond distances ranging from 2.17–2.43 Å. In the third Ir+3.08+ site, Ir+3.08+ is bonded in a 6-coordinate geometry to six B3- atoms. There are a spread of Ir–B bond distances ranging from 2.16–2.44 Å. In the fourth Ir+3.08+ site, Ir+3.08+ is bonded to five B3- atoms to form a mixture of distorted edge and corner-sharing IrB5 trigonal bipyramids. There are a spread of Ir–B bond distances ranging from 2.15–2.40 Å. In the fifth Ir+3.08+ site, Ir+3.08+ is bonded in a distorted hexagonal planar geometry to six B3- atoms. There are a spread of Ir–B bond distances ranging from 2.17–2.43 Å. In the sixth Ir+3.08+ site, Ir+3.08+ is bonded to five B3- atoms to form a mixture of distorted edge and corner-sharing IrB5 trigonal bipyramids. There are a spread of Ir–B bond distances ranging from 2.16–2.42 Å. There are nine inequivalent B3- sites. In the first B3- site, B3- is bonded in a body-centered cubic geometry to six Ir+3.08+ and two equivalent B3- atoms. Both B–B bond lengths are 1.77 Å. In the second B3- site, B3- is bonded in a 6-coordinate geometry to six Ir+3.08+ atoms. In the third B3- site, B3- is bonded in a body-centered cubic geometry to six Ir+3.08+ and two equivalent B3- atoms. In the fourth B3- site, B3- is bonded in a 9-coordinate geometry to three Zr2+, four Ir+3.08+, and two equivalent B3- atoms. There are one shorter (2.19 Å) and one longer (2.27 Å) B–B bond lengths. In the fifth B3- site, B3- is bonded in a 9-coordinate geometry to three Zr2+, four Ir+3.08+, and two equivalent B3- atoms. In the sixth B3- site, B3- is bonded in a 9-coordinate geometry to three Zr2+, four Ir+3.08+, and two equivalent B3- atoms. There are one shorter (2.20 Å) and one longer (2.26 Å) B–B bond lengths. In the seventh B3- site, B3- is bonded in a 9-coordinate geometry to three Zr2+, four Ir+3.08+, and two equivalent B3- atoms. In the eighth B3- site, B3- is bonded in a 9-coordinate geometry to three equivalent Zr2+, four Ir+3.08+, and two equivalent B3- atoms. Both B–B bond lengths are 2.22 Å. In the ninth B3- site, B3- is bonded in a 9-coordinate geometry to three equivalent Zr2+, four Ir+3.08+, and two equivalent B3- atoms. There are one shorter (2.16 Å) and one longer (2.32 Å) B–B bond lengths.

36 MATERIALS SCIENCE↗