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At least 19 records
All sourcesNASA NTRSDOE OSTI
NASA NTRS1978

Analysis, design, fabrication and testing of the mini-Brayton rotating unit (Mini-BRU). Volume 1: Text and tables

A 500 to 2100 watt power output Mini-Brayton Rotating Unit (Mini-BRU)was analyzed, designed, fabricated and tested. Performance and test data for the various components is included. Components tested include the 2.12 in. diameter compressor, the 2.86 in. diameter turbine, the Rice alternator and the cantilevered foil-type journal and thrust bearings. Also included are results on the fabrication of a C-103 turbine plenum/nozzle assembly and on offgassing of the organic materials in the alternator stator.

Dobler, F. X.↗
DOE OSTI2020

Materials Data on Y(BRu)4 by Materials Project

Y(RuB)4 crystallizes in the tetragonal I4_1/acd space group. The structure is three-dimensional. Y3+ is bonded in a 12-coordinate geometry to twelve equivalent B3- atoms. There are a spread of Y–B bond distances ranging from 2.97–3.22 Å. Ru+2.25+ is bonded to five equivalent B3- atoms to form a mixture of distorted edge and corner-sharing RuB5 trigonal bipyramids. There are a spread of Ru–B bond distances ranging from 2.15–2.29 Å. B3- is bonded in a 6-coordinate geometry to three equivalent Y3+, five equivalent Ru+2.25+, and one B3- atom. The B–B bond length is 1.80 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on U(BRu)4 by Materials Project

U(RuB)4 crystallizes in the tetragonal I4_1/acd space group. The structure is three-dimensional. U4+ is bonded in a 12-coordinate geometry to twelve equivalent B3- atoms. There are a spread of U–B bond distances ranging from 2.96–3.22 Å. Ru2+ is bonded to five equivalent B3- atoms to form a mixture of distorted edge and corner-sharing RuB5 trigonal bipyramids. There are a spread of Ru–B bond distances ranging from 2.14–2.26 Å. B3- is bonded in a 6-coordinate geometry to three equivalent U4+, five equivalent Ru2+, and one B3- atom. The B–B bond length is 1.75 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ce(BRu)2 by Materials Project

CeRu2B2 crystallizes in the orthorhombic Fddd space group. The structure is three-dimensional. Ce is bonded in a 10-coordinate geometry to four equivalent Ru and six equivalent B atoms. All Ce–Ru bond lengths are 3.00 Å. There are two shorter (2.84 Å) and four longer (3.05 Å) Ce–B bond lengths. Ru is bonded in a 4-coordinate geometry to two equivalent Ce and four equivalent B atoms. There are two shorter (2.08 Å) and two longer (2.15 Å) Ru–B bond lengths. B is bonded in a 7-coordinate geometry to three equivalent Ce and four equivalent Ru atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Lu(BRu)4 by Materials Project

LuRu4B4 crystallizes in the tetragonal I4_1/acd space group. The structure is three-dimensional. Lu3+ is bonded in a 12-coordinate geometry to twelve equivalent B3- atoms. There are a spread of Lu–B bond distances ranging from 2.93–3.22 Å. Ru+2.25+ is bonded to five equivalent B3- atoms to form a mixture of distorted edge and corner-sharing RuB5 trigonal bipyramids. There are a spread of Ru–B bond distances ranging from 2.14–2.29 Å. B3- is bonded in a 6-coordinate geometry to three equivalent Lu3+, five equivalent Ru+2.25+, and one B3- atom. The B–B bond length is 1.78 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Pr(BRu)2 by Materials Project

Pr(RuB)2 crystallizes in the orthorhombic Fddd space group. The structure is three-dimensional. Pr is bonded in a 10-coordinate geometry to four equivalent Ru and six equivalent B atoms. All Pr–Ru bond lengths are 3.04 Å. There are two shorter (2.93 Å) and four longer (3.07 Å) Pr–B bond lengths. Ru is bonded in a 4-coordinate geometry to two equivalent Pr and four equivalent B atoms. There are two shorter (2.09 Å) and two longer (2.16 Å) Ru–B bond lengths. B is bonded in a 7-coordinate geometry to three equivalent Pr and four equivalent Ru atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ho(BRu)4 by Materials Project

Ho(RuB)4 crystallizes in the tetragonal I4_1/acd space group. The structure is three-dimensional. Ho3+ is bonded in a 12-coordinate geometry to twelve equivalent B3- atoms. There are a spread of Ho–B bond distances ranging from 2.95–3.22 Å. Ru+2.25+ is bonded to five equivalent B3- atoms to form a mixture of distorted corner and edge-sharing RuB5 trigonal bipyramids. There are a spread of Ru–B bond distances ranging from 2.15–2.29 Å. B3- is bonded in a 6-coordinate geometry to three equivalent Ho3+, five equivalent Ru+2.25+, and one B3- atom. The B–B bond length is 1.79 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Pu(BRu)4 by Materials Project

Pu(RuB)4 crystallizes in the tetragonal I4_1/acd space group. The structure is three-dimensional. Pu3+ is bonded in a 12-coordinate geometry to twelve equivalent B3- atoms. There are a spread of Pu–B bond distances ranging from 2.96–3.20 Å. Ru+2.25+ is bonded to five equivalent B3- atoms to form a mixture of distorted edge and corner-sharing RuB5 trigonal bipyramids. There are a spread of Ru–B bond distances ranging from 2.13–2.26 Å. B3- is bonded in a 6-coordinate geometry to three equivalent Pu3+, five equivalent Ru+2.25+, and one B3- atom. The B–B bond length is 1.76 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Tb(BRu)4 by Materials Project

Tb(RuB)4 crystallizes in the tetragonal I4_1/acd space group. The structure is three-dimensional. Tb3+ is bonded in a 12-coordinate geometry to twelve equivalent B3- atoms. There are a spread of Tb–B bond distances ranging from 2.95–3.23 Å. Ru+2.25+ is bonded to five equivalent B3- atoms to form a mixture of distorted corner and edge-sharing RuB5 trigonal bipyramids. There are a spread of Ru–B bond distances ranging from 2.15–2.30 Å. B3- is bonded in a 6-coordinate geometry to three equivalent Tb3+, five equivalent Ru+2.25+, and one B3- atom. The B–B bond length is 1.79 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Yb(BRu)4 by Materials Project

Yb(RuB)4 crystallizes in the tetragonal I4_1/acd space group. The structure is three-dimensional. Yb3+ is bonded in a 12-coordinate geometry to twelve equivalent B3- atoms. There are a spread of Yb–B bond distances ranging from 2.94–3.21 Å. Ru+2.25+ is bonded to five equivalent B3- atoms to form a mixture of distorted edge and corner-sharing RuB5 trigonal bipyramids. There are a spread of Ru–B bond distances ranging from 2.13–2.29 Å. B3- is bonded in a 6-coordinate geometry to three equivalent Yb3+, five equivalent Ru+2.25+, and one B3- atom. The B–B bond length is 1.80 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Th(BRu)4 by Materials Project

Th(RuB)4 crystallizes in the tetragonal I4_1/acd space group. The structure is three-dimensional. Th4+ is bonded to twelve equivalent B3- atoms to form distorted ThB12 cuboctahedra that share corners with twelve equivalent RuB5 trigonal bipyramids, edges with twelve equivalent ThB12 cuboctahedra, edges with four equivalent RuB5 trigonal bipyramids, and faces with twelve equivalent RuB5 trigonal bipyramids. There are a spread of Th–B bond distances ranging from 3.02–3.22 Å. Ru2+ is bonded to five equivalent B3- atoms to form distorted RuB5 trigonal bipyramids that share corners with three equivalent ThB12 cuboctahedra, corners with eight equivalent RuB5 trigonal bipyramids, an edgeedge with one ThB12 cuboctahedra, edges with six equivalent RuB5 trigonal bipyramids, and faces with three equivalent ThB12 cuboctahedra. There are a spread of Ru–B bond distances ranging from 2.16–2.31 Å. B3- is bonded in a 6-coordinate geometry to three equivalent Th4+, five equivalent Ru2+, and one B3- atom. The B–B bond length is 1.81 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Th(BRu)2 by Materials Project

Th(RuB)2 crystallizes in the orthorhombic Fddd space group. The structure is three-dimensional. Th is bonded in a 10-coordinate geometry to four equivalent Ru and six equivalent B atoms. All Th–Ru bond lengths are 3.02 Å. There are two shorter (2.88 Å) and four longer (3.08 Å) Th–B bond lengths. Ru is bonded in a 4-coordinate geometry to two equivalent Th and four equivalent B atoms. There are two shorter (2.09 Å) and two longer (2.16 Å) Ru–B bond lengths. B is bonded in a 7-coordinate geometry to three equivalent Th and four equivalent Ru atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ce(BRu)4 by Materials Project

Ce(RuB)4 crystallizes in the tetragonal I4_1/acd space group. The structure is three-dimensional. Ce3+ is bonded to twelve equivalent B3- atoms to form distorted CeB12 cuboctahedra that share corners with twelve equivalent RuB5 trigonal bipyramids, edges with twelve equivalent CeB12 cuboctahedra, edges with four equivalent RuB5 trigonal bipyramids, and faces with twelve equivalent RuB5 trigonal bipyramids. There are a spread of Ce–B bond distances ranging from 2.99–3.21 Å. Ru+2.25+ is bonded to five equivalent B3- atoms to form distorted RuB5 trigonal bipyramids that share corners with three equivalent CeB12 cuboctahedra, corners with eight equivalent RuB5 trigonal bipyramids, an edgeedge with one CeB12 cuboctahedra, edges with six equivalent RuB5 trigonal bipyramids, and faces with three equivalent CeB12 cuboctahedra. There are a spread of Ru–B bond distances ranging from 2.14–2.29 Å. B3- is bonded in a 6-coordinate geometry to three equivalent Ce3+, five equivalent Ru+2.25+, and one B3- atom. The B–B bond length is 1.79 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Gd(BRu)2 by Materials Project

Gd(RuB)2 crystallizes in the orthorhombic Fddd space group. The structure is three-dimensional. Gd is bonded in a 10-coordinate geometry to four equivalent Ru and six equivalent B atoms. All Gd–Ru bond lengths are 3.00 Å. There are two shorter (2.82 Å) and four longer (3.02 Å) Gd–B bond lengths. Ru is bonded in a 4-coordinate geometry to two equivalent Gd and four equivalent B atoms. There are two shorter (2.07 Å) and two longer (2.16 Å) Ru–B bond lengths. B is bonded in a 7-coordinate geometry to three equivalent Gd and four equivalent Ru atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Nd(BRu)4 by Materials Project

Nd(RuB)4 crystallizes in the tetragonal I4_1/acd space group. The structure is three-dimensional. Nd3+ is bonded to twelve equivalent B3- atoms to form distorted NdB12 cuboctahedra that share corners with twelve equivalent RuB5 trigonal bipyramids, edges with twelve equivalent NdB12 cuboctahedra, edges with four equivalent RuB5 trigonal bipyramids, and faces with twelve equivalent RuB5 trigonal bipyramids. There are a spread of Nd–B bond distances ranging from 3.01–3.23 Å. Ru+2.25+ is bonded to five equivalent B3- atoms to form distorted RuB5 trigonal bipyramids that share corners with three equivalent NdB12 cuboctahedra, corners with eight equivalent RuB5 trigonal bipyramids, an edgeedge with one NdB12 cuboctahedra, edges with six equivalent RuB5 trigonal bipyramids, and faces with three equivalent NdB12 cuboctahedra. There are a spread of Ru–B bond distances ranging from 2.17–2.31 Å. B3- is bonded in a 6-coordinate geometry to three equivalent Nd3+, five equivalent Ru+2.25+, and one B3- atom. The B–B bond length is 1.81 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Dy(BRu)4 by Materials Project

Dy(RuB)4 crystallizes in the tetragonal I4_1/acd space group. The structure is three-dimensional. Dy3+ is bonded in a 12-coordinate geometry to twelve equivalent B3- atoms. There are a spread of Dy–B bond distances ranging from 2.98–3.22 Å. Ru+2.25+ is bonded to five equivalent B3- atoms to form a mixture of distorted edge and corner-sharing RuB5 trigonal bipyramids. There are a spread of Ru–B bond distances ranging from 2.14–2.29 Å. B3- is bonded in a 6-coordinate geometry to three equivalent Dy3+, five equivalent Ru+2.25+, and one B3- atom. The B–B bond length is 1.79 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Sm(BRu)4 by Materials Project

SmRu4B4 crystallizes in the tetragonal I4_1/acd space group. The structure is three-dimensional. Sm3+ is bonded to twelve equivalent B3- atoms to form distorted SmB12 cuboctahedra that share corners with twelve equivalent RuB5 trigonal bipyramids, edges with twelve equivalent SmB12 cuboctahedra, edges with four equivalent RuB5 trigonal bipyramids, and faces with twelve equivalent RuB5 trigonal bipyramids. There are a spread of Sm–B bond distances ranging from 2.99–3.23 Å. Ru+2.25+ is bonded to five equivalent B3- atoms to form distorted RuB5 trigonal bipyramids that share corners with three equivalent SmB12 cuboctahedra, corners with eight equivalent RuB5 trigonal bipyramids, an edgeedge with one SmB12 cuboctahedra, edges with six equivalent RuB5 trigonal bipyramids, and faces with three equivalent SmB12 cuboctahedra. There are a spread of Ru–B bond distances ranging from 2.16–2.31 Å. B3- is bonded in a 6-coordinate geometry to three equivalent Sm3+, five equivalent Ru+2.25+, and one B3- atom. The B–B bond length is 1.80 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Tm(BRu)4 by Materials Project

Tm(RuB)4 crystallizes in the tetragonal I4_1/acd space group. The structure is three-dimensional. Tm3+ is bonded in a 12-coordinate geometry to twelve equivalent B3- atoms. There are a spread of Tm–B bond distances ranging from 2.96–3.21 Å. Ru+2.25+ is bonded to five equivalent B3- atoms to form a mixture of distorted edge and corner-sharing RuB5 trigonal bipyramids. There are a spread of Ru–B bond distances ranging from 2.15–2.28 Å. B3- is bonded in a 6-coordinate geometry to three equivalent Tm3+, five equivalent Ru+2.25+, and one B3- atom. The B–B bond length is 1.79 Å.

36 MATERIALS SCIENCE↗