Engineering Papers⌕ Search

SEARCH · Engineering Papers

Results for “C-Fe-Mo”

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.

5 records
All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on Fe11Mo6C5 by Materials Project

Mo6Fe11C5 crystallizes in the monoclinic C2/m space group. The structure is three-dimensional. there are two inequivalent Mo sites. In the first Mo site, Mo is bonded in a 2-coordinate geometry to one Fe and three C atoms. The Mo–Fe bond length is 2.71 Å. There are a spread of Mo–C bond distances ranging from 2.08–2.38 Å. In the second Mo site, Mo is bonded in a 2-coordinate geometry to one Fe and two equivalent C atoms. The Mo–Fe bond length is 2.78 Å. Both Mo–C bond lengths are 2.20 Å. There are five inequivalent Fe sites. In the first Fe site, Fe is bonded in a distorted water-like geometry to one Fe and two equivalent C atoms. The Fe–Fe bond length is 2.48 Å. There are one shorter (1.99 Å) and one longer (2.09 Å) Fe–C bond lengths. In the second Fe site, Fe is bonded in a distorted bent 150 degrees geometry to one Fe and two equivalent C atoms. The Fe–Fe bond length is 2.49 Å. Both Fe–C bond lengths are 1.94 Å. In the third Fe site, Fe is bonded in a single-bond geometry to one C atom. The Fe–C bond length is 1.93 Å. In the fourth Fe site, Fe is bonded in a bent 150 degrees geometry to two equivalent C atoms. Both Fe–C bond lengths are 1.98 Å. In the fifth Fe site, Fe is bonded to six Mo and six Fe atoms to form FeFe6Mo6 cuboctahedra that share edges with two equivalent CFe2Mo4 octahedra. There are two inequivalent C sites. In the first C site, C is bonded in a 7-coordinate geometry to three Mo and four Fe atoms. In the second C site, C is bonded to four equivalent Mo and two equivalent Fe atoms to form CFe2Mo4 octahedra that share edges with two equivalent FeFe6Mo6 cuboctahedra.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Fe21(MoC3)2 by Materials Project

Fe21Mo2C6 crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. Mo is bonded in a distorted tetrahedral geometry to four equivalent Fe atoms. All Mo–Fe bond lengths are 2.43 Å. There are three inequivalent Fe sites. In the first Fe site, Fe is bonded in a distorted bent 150 degrees geometry to one Fe and two equivalent C atoms. The Fe–Fe bond length is 2.52 Å. Both Fe–C bond lengths are 2.12 Å. In the second Fe site, Fe is bonded to one Mo and three equivalent C atoms to form a mixture of distorted edge and corner-sharing FeMoC3 tetrahedra. All Fe–C bond lengths are 2.04 Å. In the third Fe site, Fe is bonded in a cuboctahedral geometry to twelve equivalent Fe atoms. C is bonded in a 8-coordinate geometry to eight Fe atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Fe2Mo4C by Materials Project

Fe2Mo4C crystallizes in the trigonal R-3m space group. The structure is three-dimensional. there are four inequivalent Mo sites. In the first Mo site, Mo is bonded in a 6-coordinate geometry to six equivalent Fe atoms. All Mo–Fe bond lengths are 2.44 Å. In the second Mo site, Mo is bonded in a 6-coordinate geometry to six Fe atoms. All Mo–Fe bond lengths are 2.44 Å. In the third Mo site, Mo is bonded in a 2-coordinate geometry to four Fe and two equivalent C atoms. There are two shorter (2.72 Å) and two longer (2.91 Å) Mo–Fe bond lengths. Both Mo–C bond lengths are 2.13 Å. In the fourth Mo site, Mo is bonded in a 2-coordinate geometry to four Fe and two C atoms. There are a spread of Mo–Fe bond distances ranging from 2.71–2.92 Å. Both Mo–C bond lengths are 2.13 Å. There are two inequivalent Fe sites. In the first Fe site, Fe is bonded in a 12-coordinate geometry to nine Mo and three Fe atoms. There are two shorter (2.60 Å) and one longer (2.61 Å) Fe–Fe bond lengths. In the second Fe site, Fe is bonded in a 12-coordinate geometry to nine Mo and three equivalent Fe atoms. There are two inequivalent C sites. In the first C site, C is bonded to six Mo atoms to form corner-sharing CMo6 octahedra. The corner-sharing octahedral tilt angles are 40°. In the second C site, C is bonded to six equivalent Mo atoms to form corner-sharing CMo6 octahedra. The corner-sharing octahedral tilt angles are 40°.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Fe11MoC4 by Materials Project

MoFe5C2(Fe3C)2 crystallizes in the monoclinic Pm space group. The structure is two-dimensional and consists of one Fe3C sheet oriented in the (0, 1, 0) direction and one MoFe5C2 sheet oriented in the (0, 1, 0) direction. In the Fe3C sheet, there are four inequivalent Fe sites. In the first Fe site, Fe is bonded in a single-bond geometry to one C atom. The Fe–C bond length is 1.79 Å. In the second Fe site, Fe is bonded in a single-bond geometry to one C atom. The Fe–C bond length is 1.88 Å. In the third Fe site, Fe is bonded in a square co-planar geometry to four C atoms. There are two shorter (2.01 Å) and two longer (2.04 Å) Fe–C bond lengths. In the fourth Fe site, Fe is bonded in a square co-planar geometry to four C atoms. There are a spread of Fe–C bond distances ranging from 1.99–2.04 Å. There are two inequivalent C sites. In the first C site, C is bonded to six Fe atoms to form a mixture of corner and edge-sharing CFe6 octahedra. The corner-sharing octahedra tilt angles range from 0–1°. In the second C site, C is bonded to six Fe atoms to form a mixture of corner and edge-sharing CFe6 octahedra. The corner-sharing octahedra tilt angles range from 0–1°. In the MoFe5C2 sheet, Mo is bonded in a square co-planar geometry to four C atoms. There are a spread of Mo–C bond distances ranging from 2.10–2.12 Å. There are three inequivalent Fe sites. In the first Fe site, Fe is bonded in a single-bond geometry to one C atom. The Fe–C bond length is 1.89 Å. In the second Fe site, Fe is bonded in a single-bond geometry to one C atom. The Fe–C bond length is 1.90 Å. In the third Fe site, Fe is bonded in a square co-planar geometry to four C atoms. There are a spread of Fe–C bond distances ranging from 1.92–1.95 Å. There are two inequivalent C sites. In the first C site, C is bonded to two equivalent Mo and four Fe atoms to form a mixture of corner and edge-sharing CFe4Mo2 octahedra. The corner-sharing octahedra tilt angles range from 0–1°. In the second C site, C is bonded to two equivalent Mo and four Fe atoms to form a mixture of corner and edge-sharing CFe4Mo2 octahedra. The corner-sharing octahedra tilt angles range from 0–1°.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Fe11MoC4 by Materials Project

MoFe11C4 is Cementite-derived structured and crystallizes in the triclinic P1 space group. The structure is three-dimensional. Mo is bonded in a 2-coordinate geometry to eleven Fe and three C atoms. There are a spread of Mo–Fe bond distances ranging from 2.55–2.70 Å. There are a spread of Mo–C bond distances ranging from 2.17–2.42 Å. There are eleven inequivalent Fe sites. In the first Fe site, Fe is bonded in a distorted bent 150 degrees geometry to one Mo and two C atoms. There are one shorter (1.96 Å) and one longer (2.04 Å) Fe–C bond lengths. In the second Fe site, Fe is bonded in a bent 150 degrees geometry to two equivalent Mo and two C atoms. There is one shorter (1.96 Å) and one longer (1.99 Å) Fe–C bond length. In the third Fe site, Fe is bonded in a distorted bent 150 degrees geometry to one Mo and two C atoms. Both Fe–C bond lengths are 1.98 Å. In the fourth Fe site, Fe is bonded in a distorted bent 150 degrees geometry to one Mo and two C atoms. There is one shorter (1.94 Å) and one longer (1.97 Å) Fe–C bond length. In the fifth Fe site, Fe is bonded in a distorted water-like geometry to two equivalent Mo and two C atoms. There is one shorter (1.98 Å) and one longer (1.99 Å) Fe–C bond length. In the sixth Fe site, Fe is bonded in a 2-coordinate geometry to three C atoms. There are a spread of Fe–C bond distances ranging from 1.99–2.27 Å. In the seventh Fe site, Fe is bonded in a distorted water-like geometry to two C atoms. There is one shorter (1.94 Å) and one longer (1.95 Å) Fe–C bond length. In the eighth Fe site, Fe is bonded in a distorted L-shaped geometry to two equivalent Mo and two C atoms. Both Fe–C bond lengths are 2.06 Å. In the ninth Fe site, Fe is bonded in a distorted water-like geometry to one Mo and two C atoms. There are one shorter (2.00 Å) and one longer (2.05 Å) Fe–C bond lengths. In the tenth Fe site, Fe is bonded in a distorted water-like geometry to one Mo and two C atoms. There are one shorter (1.99 Å) and one longer (2.01 Å) Fe–C bond lengths. In the eleventh Fe site, Fe is bonded in a 3-coordinate geometry to three C atoms. There are two shorter (2.00 Å) and one longer (2.26 Å) Fe–C bond lengths. There are four inequivalent C sites. In the first C site, C is bonded in a 6-coordinate geometry to six Fe atoms. In the second C site, C is bonded in a 7-coordinate geometry to one Mo and six Fe atoms. In the third C site, C is bonded in a 6-coordinate geometry to one Mo and six Fe atoms. In the fourth C site, C is bonded in a 7-coordinate geometry to one Mo and six Fe atoms.

36 MATERIALS SCIENCE↗