Engineering Papers⌕ Search

SEARCH · Engineering Papers

Results for “B-Ce-Ni”

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.

7 records
All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on Ce2NiB10 by Materials Project

Ce2NiB10 crystallizes in the orthorhombic Pbam space group. The structure is three-dimensional. Ce4+ is bonded in a 12-coordinate geometry to twenty B+1.20- atoms. There are a spread of Ce–B bond distances ranging from 2.86–3.00 Å. Ni4+ is bonded in a 8-coordinate geometry to eight B+1.20- atoms. There are a spread of Ni–B bond distances ranging from 2.10–2.15 Å. There are four inequivalent B+1.20- sites. In the first B+1.20- site, B+1.20- is bonded in a 9-coordinate geometry to four equivalent Ce4+, one Ni4+, and four B+1.20- atoms. There are a spread of B–B bond distances ranging from 1.67–1.79 Å. In the second B+1.20- site, B+1.20- is bonded in a 1-coordinate geometry to four equivalent Ce4+ and five B+1.20- atoms. There are a spread of B–B bond distances ranging from 1.66–1.76 Å. In the third B+1.20- site, B+1.20- is bonded in a 9-coordinate geometry to four equivalent Ce4+, one Ni4+, and four B+1.20- atoms. There is one shorter (1.65 Å) and one longer (1.77 Å) B–B bond length. In the fourth B+1.20- site, B+1.20- is bonded in a 1-coordinate geometry to four equivalent Ce4+, one Ni4+, and four B+1.20- atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ce(Ni2B)6 by Materials Project

Ce(Ni2B)6 crystallizes in the orthorhombic Cmc2_1 space group. The structure is three-dimensional. Ce3+ is bonded in a distorted hexagonal planar geometry to six B3- atoms. There are a spread of Ce–B bond distances ranging from 3.02–3.29 Å. There are seven inequivalent Ni+1.25+ sites. In the first Ni+1.25+ site, Ni+1.25+ is bonded in a distorted T-shaped geometry to three B3- atoms. There are a spread of Ni–B bond distances ranging from 2.02–2.09 Å. In the second Ni+1.25+ site, Ni+1.25+ is bonded to four B3- atoms to form a mixture of edge and corner-sharing NiB4 tetrahedra. There are a spread of Ni–B bond distances ranging from 2.01–2.10 Å. In the third Ni+1.25+ site, Ni+1.25+ is bonded to four B3- atoms to form a mixture of distorted edge and corner-sharing NiB4 tetrahedra. There are a spread of Ni–B bond distances ranging from 2.02–2.11 Å. In the fourth Ni+1.25+ site, Ni+1.25+ is bonded in a distorted T-shaped geometry to three B3- atoms. There are a spread of Ni–B bond distances ranging from 2.06–2.14 Å. In the fifth Ni+1.25+ site, Ni+1.25+ is bonded to four B3- atoms to form a mixture of edge and corner-sharing NiB4 tetrahedra. There are a spread of Ni–B bond distances ranging from 1.99–2.10 Å. In the sixth Ni+1.25+ site, Ni+1.25+ is bonded in a T-shaped geometry to three B3- atoms. There are two shorter (2.00 Å) and one longer (2.08 Å) Ni–B bond lengths. In the seventh Ni+1.25+ site, Ni+1.25+ is bonded in a distorted T-shaped geometry to three B3- atoms. There are two shorter (2.10 Å) and one longer (2.21 Å) Ni–B bond lengths. There are four inequivalent B3- sites. In the first B3- site, B3- is bonded in a 7-coordinate geometry to one Ce3+ and seven Ni+1.25+ atoms. In the second B3- site, B3- is bonded in a 7-coordinate geometry to one Ce3+ and seven Ni+1.25+ atoms. In the third B3- site, B3- is bonded in a 7-coordinate geometry to one Ce3+ and seven Ni+1.25+ atoms. In the fourth B3- site, B3- is bonded in a 7-coordinate geometry to one Ce3+ and seven Ni+1.25+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ce2(Ni7B2)3 by Materials Project

Ce2Ni21B6 crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. Ce is bonded to sixteen Ni atoms to form distorted CeNi16 tetrahedra that share edges with six equivalent CeNi16 tetrahedra and faces with four equivalent NiNi12 cuboctahedra. There are four shorter (2.53 Å) and twelve longer (2.94 Å) Ce–Ni bond lengths. There are three inequivalent Ni sites. In the first Ni site, Ni is bonded to twelve equivalent Ni atoms to form NiNi12 cuboctahedra that share faces with eight equivalent CeNi16 tetrahedra. All Ni–Ni bond lengths are 2.55 Å. In the second Ni site, Ni is bonded to one Ce and three equivalent B atoms to form a mixture of distorted corner and edge-sharing NiCeB3 tetrahedra. All Ni–B bond lengths are 2.13 Å. In the third Ni site, Ni is bonded in a distorted bent 150 degrees geometry to two equivalent Ce, one Ni, and two equivalent B atoms. Both Ni–B bond lengths are 2.09 Å. B is bonded in a 8-coordinate geometry to eight Ni atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ce2Ni5B4 by Materials Project

Ce2Ni5B4 crystallizes in the monoclinic C2/m space group. The structure is three-dimensional. Ce3+ is bonded in a 1-coordinate geometry to five B3- atoms. There are three shorter (2.85 Å) and two longer (2.91 Å) Ce–B bond lengths. There are two inequivalent Ni+1.20+ sites. In the first Ni+1.20+ site, Ni+1.20+ is bonded in a rectangular see-saw-like geometry to four B3- atoms. There are a spread of Ni–B bond distances ranging from 2.03–2.19 Å. In the second Ni+1.20+ site, Ni+1.20+ is bonded in a linear geometry to two equivalent B3- atoms. Both Ni–B bond lengths are 2.03 Å. There are two inequivalent B3- sites. In the first B3- site, B3- is bonded in a 6-coordinate geometry to two equivalent Ce3+, five Ni+1.20+, and one B3- atom. The B–B bond length is 1.67 Å. In the second B3- site, B3- is bonded in a 9-coordinate geometry to three equivalent Ce3+, four equivalent Ni+1.20+, and two B3- atoms. The B–B bond length is 1.78 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on CeNi4B by Materials Project

CeNi4B crystallizes in the orthorhombic Cmmm space group. The structure is three-dimensional. there are two inequivalent Ce sites. In the first Ce site, Ce is bonded in a distorted hexagonal planar geometry to six equivalent Ni atoms. There are four shorter (2.88 Å) and two longer (2.89 Å) Ce–Ni bond lengths. In the second Ce site, Ce is bonded in a 12-coordinate geometry to twelve Ni and six equivalent B atoms. There are four shorter (2.89 Å) and eight longer (2.90 Å) Ce–Ni bond lengths. There are four shorter (2.88 Å) and two longer (2.89 Å) Ce–B bond lengths. There are three inequivalent Ni sites. In the first Ni site, Ni is bonded in a 12-coordinate geometry to three equivalent Ce and nine Ni atoms. There are six shorter (2.51 Å) and three longer (2.88 Å) Ni–Ni bond lengths. In the second Ni site, Ni is bonded in a distorted L-shaped geometry to two equivalent Ce, two equivalent Ni, and two equivalent B atoms. Both Ni–B bond lengths are 2.06 Å. In the third Ni site, Ni is bonded in a distorted L-shaped geometry to two equivalent Ce, two equivalent Ni, and two equivalent B atoms. Both Ni–B bond lengths are 2.05 Å. B is bonded in a 6-coordinate geometry to three equivalent Ce and six Ni atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on CeNiB4 by Materials Project

CeNiB4 crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. there are two inequivalent Ce4+ sites. In the first Ce4+ site, Ce4+ is bonded in a 4-coordinate geometry to sixteen B+1.50- atoms. There are a spread of Ce–B bond distances ranging from 2.82–2.89 Å. In the second Ce4+ site, Ce4+ is bonded in a 8-coordinate geometry to sixteen B+1.50- atoms. There are eight shorter (2.82 Å) and eight longer (2.87 Å) Ce–B bond lengths. Ni2+ is bonded in a 6-coordinate geometry to six B+1.50- atoms. There are two shorter (2.11 Å) and four longer (2.21 Å) Ni–B bond lengths. There are two inequivalent B+1.50- sites. In the first B+1.50- site, B+1.50- is bonded in a 9-coordinate geometry to four Ce4+, one Ni2+, and four B+1.50- atoms. There is one shorter (1.70 Å) and three longer (1.76 Å) B–B bond length. In the second B+1.50- site, B+1.50- is bonded in a 9-coordinate geometry to four Ce4+, two equivalent Ni2+, and three B+1.50- atoms. The B–B bond length is 1.70 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on CeNi2B3 by Materials Project

CeNi2B3 crystallizes in the tetragonal I4mm space group. The structure is three-dimensional. there are three inequivalent Ce3+ sites. In the first Ce3+ site, Ce3+ is bonded in a 12-coordinate geometry to twelve B3- atoms. There are a spread of Ce–B bond distances ranging from 2.89–3.20 Å. In the second Ce3+ site, Ce3+ is bonded in a 12-coordinate geometry to twelve B3- atoms. There are eight shorter (2.81 Å) and four longer (2.97 Å) Ce–B bond lengths. In the third Ce3+ site, Ce3+ is bonded in a 12-coordinate geometry to twelve B3- atoms. There are four shorter (2.94 Å) and eight longer (2.99 Å) Ce–B bond lengths. There are two inequivalent Ni3+ sites. In the first Ni3+ site, Ni3+ is bonded in a 4-coordinate geometry to four B3- atoms. There are two shorter (2.07 Å) and two longer (2.14 Å) Ni–B bond lengths. In the second Ni3+ site, Ni3+ is bonded in a 3-coordinate geometry to three B3- atoms. There are one shorter (1.98 Å) and two longer (2.07 Å) Ni–B bond lengths. There are two inequivalent B3- sites. In the first B3- site, B3- is bonded in a 1-coordinate geometry to four Ce3+, three Ni3+, and two equivalent B3- atoms. Both B–B bond lengths are 1.74 Å. In the second B3- site, B3- is bonded in a 9-coordinate geometry to four Ce3+, two Ni3+, and three B3- atoms. There is one shorter (1.67 Å) and one longer (1.77 Å) B–B bond length.

36 MATERIALS SCIENCE↗