Engineering Papers⌕ Search

SEARCH · Engineering Papers

Results for “K-O-Si-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.

7 records
All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on K2ZrSi2O7 by Materials Project

K2ZrSi2O7 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. there are two inequivalent K1+ sites. In the first K1+ site, K1+ is bonded in a 10-coordinate geometry to ten O2- atoms. There are a spread of K–O bond distances ranging from 2.81–3.35 Å. In the second K1+ site, K1+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of K–O bond distances ranging from 2.75–3.14 Å. Zr4+ is bonded to six O2- atoms to form ZrO6 octahedra that share corners with six SiO4 tetrahedra. There are a spread of Zr–O bond distances ranging from 2.08–2.16 Å. There are two inequivalent Si4+ sites. In the first Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share corners with three equivalent ZrO6 octahedra and a cornercorner with one SiO4 tetrahedra. The corner-sharing octahedra tilt angles range from 6–38°. There are a spread of Si–O bond distances ranging from 1.63–1.68 Å. In the second Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share corners with three equivalent ZrO6 octahedra and a cornercorner with one SiO4 tetrahedra. The corner-sharing octahedra tilt angles range from 3–38°. There are a spread of Si–O bond distances ranging from 1.63–1.67 Å. There are seven inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted linear geometry to three K1+, one Zr4+, and one Si4+ atom. In the second O2- site, O2- is bonded in a 2-coordinate geometry to two K1+, one Zr4+, and one Si4+ atom. In the third O2- site, O2- is bonded in a 2-coordinate geometry to two equivalent K1+ and two Si4+ atoms. In the fourth O2- site, O2- is bonded in a 2-coordinate geometry to three K1+, one Zr4+, and one Si4+ atom. In the fifth O2- site, O2- is bonded in a 2-coordinate geometry to three K1+, one Zr4+, and one Si4+ atom. In the sixth O2- site, O2- is bonded in a 2-coordinate geometry to three equivalent K1+, one Zr4+, and one Si4+ atom. In the seventh O2- site, O2- is bonded in a distorted linear geometry to three equivalent K1+, one Zr4+, and one Si4+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on K2Zr(SiO3)3 by Materials Project

K2ZrSi3O9 crystallizes in the hexagonal P6_3/m space group. The structure is three-dimensional. K1+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of K–O bond distances ranging from 2.87–3.28 Å. Zr4+ is bonded to six equivalent O2- atoms to form ZrO6 octahedra that share corners with six equivalent SiO4 tetrahedra. All Zr–O bond lengths are 2.12 Å. Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share corners with two equivalent ZrO6 octahedra and corners with two equivalent SiO4 tetrahedra. The corner-sharing octahedral tilt angles are 38°. There are a spread of Si–O bond distances ranging from 1.62–1.67 Å. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a 2-coordinate geometry to two equivalent K1+, one Zr4+, and one Si4+ atom. In the second O2- site, O2- is bonded in a distorted bent 120 degrees geometry to two equivalent K1+ and two equivalent Si4+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on K2ZrSi2O7 by Materials Project

K2ZrSi2O7 crystallizes in the monoclinic C2/m space group. The structure is three-dimensional. there are six inequivalent K1+ sites. In the first K1+ site, K1+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of K–O bond distances ranging from 2.78–3.15 Å. In the second K1+ site, K1+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of K–O bond distances ranging from 2.80–3.34 Å. In the third K1+ site, K1+ is bonded in a 10-coordinate geometry to ten O2- atoms. There are a spread of K–O bond distances ranging from 2.89–3.26 Å. In the fourth K1+ site, K1+ is bonded in a 10-coordinate geometry to ten O2- atoms. There are a spread of K–O bond distances ranging from 2.88–3.22 Å. In the fifth K1+ site, K1+ is bonded in a 11-coordinate geometry to eleven O2- atoms. There are a spread of K–O bond distances ranging from 2.93–3.25 Å. In the sixth K1+ site, K1+ is bonded in a 11-coordinate geometry to eleven O2- atoms. There are a spread of K–O bond distances ranging from 2.93–3.33 Å. There are three inequivalent Zr4+ sites. In the first Zr4+ site, Zr4+ is bonded to six O2- atoms to form ZrO6 octahedra that share corners with six SiO4 tetrahedra. There are a spread of Zr–O bond distances ranging from 2.07–2.18 Å. In the second Zr4+ site, Zr4+ is bonded to six O2- atoms to form ZrO6 octahedra that share corners with six SiO4 tetrahedra. There are a spread of Zr–O bond distances ranging from 2.07–2.17 Å. In the third Zr4+ site, Zr4+ is bonded to six O2- atoms to form ZrO6 octahedra that share corners with six SiO4 tetrahedra. There are a spread of Zr–O bond distances ranging from 2.09–2.13 Å. There are six inequivalent Si4+ sites. In the first Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share corners with three ZrO6 octahedra and a cornercorner with one SiO4 tetrahedra. The corner-sharing octahedra tilt angles range from 1–36°. There are a spread of Si–O bond distances ranging from 1.63–1.68 Å. In the second Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share corners with three ZrO6 octahedra and a cornercorner with one SiO4 tetrahedra. The corner-sharing octahedra tilt angles range from 3–36°. There are a spread of Si–O bond distances ranging from 1.63–1.68 Å. In the third Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share corners with three ZrO6 octahedra and a cornercorner with one SiO4 tetrahedra. The corner-sharing octahedra tilt angles range from 1–29°. There are a spread of Si–O bond distances ranging from 1.62–1.67 Å. In the fourth Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share corners with three ZrO6 octahedra and a cornercorner with one SiO4 tetrahedra. The corner-sharing octahedra tilt angles range from 1–29°. There are a spread of Si–O bond distances ranging from 1.62–1.67 Å. In the fifth Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share corners with three ZrO6 octahedra and a cornercorner with one SiO4 tetrahedra. The corner-sharing octahedra tilt angles range from 10–41°. There is three shorter (1.63 Å) and one longer (1.67 Å) Si–O bond length. In the sixth Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share corners with three ZrO6 octahedra and a cornercorner with one SiO4 tetrahedra. The corner-sharing octahedra tilt angles range from 11–42°. There is three shorter (1.63 Å) and one longer (1.67 Å) Si–O bond length. There are eighteen inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 150 degrees geometry to three K1+ and two Si4+ atoms. In the second O2- site, O2- is bonded in a distorted linear geometry to three K1+, one Zr4+, and one Si4+ atom. In the third O2- site, O2- is bonded in a distorted linear geometry to three K1+, one Zr4+, and one Si4+ atom. In the fourth O2- site, O2- is bonded in a 5-coordinate geometry to three K1+, one Zr4+, and one Si4+ atom. In the fifth O2- site, O2- is bonded in a 2-coordinate geometry to three K1+, one Zr4+, and one Si4+ atom. In the sixth O2- site, O2- is bonded in a distorted linear geometry to three K1+, one Zr4+, and one Si4+ atom. In the seventh O2- site, O2- is bonded in a 2-coordinate geometry to three K1+, one Zr4+, and one Si4+ atom. In the eighth O2- site, O2- is bonded in a 2-coordinate geometry to two equivalent K1+ and two equivalent Si4+ atoms. In the ninth O2- site, O2- is bonded in a 2-coordinate geometry to two equivalent K1+ and two equivalent Si4+ atoms. In the tenth O2- site, O2- is bonded in a distorted linear geometry to three K1+, one Zr4+, and one Si4+ atom. In the eleventh O2- site, O2- is bonded in a 5-coordinate geometry to three K1+, one Zr4+, and one Si4+ atom. In the twelfth O2- site, O2- is bonded in a 2-coordinate geometry to three K1+, one Zr4+, and one Si4+ atom. In the thirteenth O2- site, O2- is bonded in a 2-coordinate geometry to two K1+, one Zr4+, and one Si4+ atom. In the fourteenth O2- site, O2- is bonded in a 2-coordinate geometry to three K1+, one Zr4+, and one Si4+ atom. In the fifteenth O2- site, O2- is bonded in a 2-coordinate geometry to three K1+, one Zr4+, and one Si4+ atom. In the sixteenth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to two K1+, one Zr4+, and one Si4+ atom. In the seventeenth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to two K1+, one Zr4+, and one Si4+ atom. In the eighteenth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to three K1+ and two Si4+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on K2ZrSi3O11 by Materials Project

K2ZrSi3O11 crystallizes in the orthorhombic C222_1 space group. The structure is three-dimensional. K is bonded in a 7-coordinate geometry to seven O atoms. There are a spread of K–O bond distances ranging from 2.70–3.15 Å. Zr is bonded to six O atoms to form ZrO6 octahedra that share corners with six SiO4 tetrahedra. There are a spread of Zr–O bond distances ranging from 2.10–2.14 Å. There are two inequivalent Si sites. In the first Si site, Si is bonded to four O atoms to form SiO4 tetrahedra that share corners with two equivalent ZrO6 octahedra and corners with two equivalent SiO4 tetrahedra. The corner-sharing octahedral tilt angles are 44°. There is two shorter (1.62 Å) and two longer (1.66 Å) Si–O bond length. In the second Si site, Si is bonded to four O atoms to form SiO4 tetrahedra that share corners with two equivalent ZrO6 octahedra and corners with two SiO4 tetrahedra. The corner-sharing octahedra tilt angles range from 40–41°. There are a spread of Si–O bond distances ranging from 1.62–1.67 Å. There are six inequivalent O sites. In the first O site, O is bonded in a 3-coordinate geometry to one K and two Si atoms. In the second O site, O is bonded in a 2-coordinate geometry to one K, one Zr, and one Si atom. In the third O site, O is bonded in a distorted bent 150 degrees geometry to two equivalent Si atoms. In the fourth O site, O is bonded in a water-like geometry to two equivalent K atoms. In the fifth O site, O is bonded in a 4-coordinate geometry to two equivalent K, one Zr, and one Si atom. In the sixth O site, O is bonded in a 3-coordinate geometry to one K, one Zr, and one Si atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on K2ZrSi3O10 by Materials Project

K2ZrSi3O10 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. there are two inequivalent K sites. In the first K site, K is bonded in a 7-coordinate geometry to eight O atoms. There are a spread of K–O bond distances ranging from 2.76–3.34 Å. In the second K site, K is bonded in a 2-coordinate geometry to eight O atoms. There are a spread of K–O bond distances ranging from 2.91–3.35 Å. Zr is bonded to six O atoms to form ZrO6 octahedra that share corners with six SiO4 tetrahedra. There are a spread of Zr–O bond distances ranging from 2.10–2.14 Å. There are three inequivalent Si sites. In the first Si site, Si is bonded to four O atoms to form SiO4 tetrahedra that share corners with two equivalent ZrO6 octahedra and corners with two SiO4 tetrahedra. The corner-sharing octahedra tilt angles range from 45–47°. There are a spread of Si–O bond distances ranging from 1.62–1.65 Å. In the second Si site, Si is bonded to four O atoms to form SiO4 tetrahedra that share corners with two equivalent ZrO6 octahedra and corners with two SiO4 tetrahedra. The corner-sharing octahedra tilt angles range from 43–46°. There are a spread of Si–O bond distances ranging from 1.62–1.66 Å. In the third Si site, Si is bonded to four O atoms to form SiO4 tetrahedra that share corners with two equivalent ZrO6 octahedra and corners with two SiO4 tetrahedra. The corner-sharing octahedra tilt angles range from 45–51°. There is two shorter (1.62 Å) and two longer (1.67 Å) Si–O bond length. There are ten inequivalent O sites. In the first O site, O is bonded in a 2-coordinate geometry to one K, one Zr, and one Si atom. In the second O site, O is bonded in a 3-coordinate geometry to one K, one Zr, and one Si atom. In the third O site, O is bonded in a 2-coordinate geometry to two K, one Zr, and one Si atom. In the fourth O site, O is bonded in a 2-coordinate geometry to one K, one Zr, and one Si atom. In the fifth O site, O is bonded in an L-shaped geometry to two equivalent K atoms. In the sixth O site, O is bonded in a 2-coordinate geometry to two equivalent K and two Si atoms. In the seventh O site, O is bonded in a 2-coordinate geometry to one K and two Si atoms. In the eighth O site, O is bonded in a 4-coordinate geometry to two K, one Zr, and one Si atom. In the ninth O site, O is bonded in a bent 120 degrees geometry to two K and two Si atoms. In the tenth O site, O is bonded in a 4-coordinate geometry to two K, one Zr, and one Si atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on K2ZrSi2O7 by Materials Project

K2ZrSi2O7 crystallizes in the monoclinic C2/m space group. The structure is three-dimensional. there are six inequivalent K1+ sites. In the first K1+ site, K1+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of K–O bond distances ranging from 2.87–3.28 Å. In the second K1+ site, K1+ is bonded in a 1-coordinate geometry to one O2- atom. The K–O bond length is 2.48 Å. In the third K1+ site, K1+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of K–O bond distances ranging from 3.01–3.18 Å. In the fourth K1+ site, K1+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of K–O bond distances ranging from 2.67–3.18 Å. In the fifth K1+ site, K1+ is bonded in a 2-coordinate geometry to seven O2- atoms. There are a spread of K–O bond distances ranging from 2.69–3.07 Å. In the sixth K1+ site, K1+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of K–O bond distances ranging from 3.03–3.23 Å. There are three inequivalent Zr4+ sites. In the first Zr4+ site, Zr4+ is bonded to six O2- atoms to form distorted ZrO6 octahedra that share corners with three SiO4 tetrahedra. There are a spread of Zr–O bond distances ranging from 2.07–2.17 Å. In the second Zr4+ site, Zr4+ is bonded to six O2- atoms to form ZrO6 octahedra that share corners with six SiO4 tetrahedra. There are a spread of Zr–O bond distances ranging from 2.10–2.20 Å. In the third Zr4+ site, Zr4+ is bonded to five O2- atoms to form ZrO5 square pyramids that share corners with five SiO4 tetrahedra. There are a spread of Zr–O bond distances ranging from 2.08–2.14 Å. There are six inequivalent Si4+ sites. In the first Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share corners with two ZrO6 octahedra, a cornercorner with one ZrO5 square pyramid, and a cornercorner with one SiO4 tetrahedra. The corner-sharing octahedra tilt angles range from 17–32°. There are a spread of Si–O bond distances ranging from 1.62–1.66 Å. In the second Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share a cornercorner with one ZrO6 octahedra, a cornercorner with one ZrO5 square pyramid, and a cornercorner with one SiO4 tetrahedra. The corner-sharing octahedral tilt angles are 8°. There are a spread of Si–O bond distances ranging from 1.62–1.67 Å. In the third Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share a cornercorner with one ZrO6 octahedra, corners with two equivalent ZrO5 square pyramids, and a cornercorner with one SiO4 tetrahedra. The corner-sharing octahedral tilt angles are 7°. There are a spread of Si–O bond distances ranging from 1.62–1.67 Å. In the fourth Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share a cornercorner with one ZrO6 octahedra and corners with two equivalent ZrO5 square pyramids. The corner-sharing octahedral tilt angles are 11°. There is two shorter (1.65 Å) and two longer (1.66 Å) Si–O bond length. In the fifth Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share a cornercorner with one ZrO6 octahedra, corners with two equivalent ZrO5 square pyramids, and a cornercorner with one SiO4 tetrahedra. The corner-sharing octahedral tilt angles are 34°. There is three shorter (1.64 Å) and one longer (1.66 Å) Si–O bond length. In the sixth Si4+ site, Si4+ is bonded in a water-like geometry to two O2- atoms. There is one shorter (1.66 Å) and one longer (1.81 Å) Si–O bond length. There are eighteen inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted linear geometry to one K1+ and two Si4+ atoms. In the second O2- site, O2- is bonded in a 2-coordinate geometry to two K1+, one Zr4+, and one Si4+ atom. In the third O2- site, O2- is bonded in a distorted linear geometry to two equivalent K1+, one Zr4+, and one Si4+ atom. In the fourth O2- site, O2- is bonded in a distorted linear geometry to one Zr4+ and one Si4+ atom. In the fifth O2- site, O2- is bonded in a distorted single-bond geometry to one K1+, one Si4+, and one O2- atom. The O–O bond length is 1.50 Å. In the sixth O2- site, O2- is bonded in a distorted linear geometry to two K1+, one Zr4+, and one Si4+ atom. In the seventh O2- site, O2- is bonded in a distorted bent 150 degrees geometry to three K1+, one Zr4+, and one Si4+ atom. In the eighth O2- site, O2- is bonded in a bent 150 degrees geometry to two equivalent K1+ and two equivalent Si4+ atoms. In the ninth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to two equivalent K1+ and two equivalent Si4+ atoms. In the tenth O2- site, O2- is bonded in a distorted linear geometry to one Zr4+ and one Si4+ atom. In the eleventh O2- site, O2- is bonded in a 2-coordinate geometry to three K1+, one Zr4+, and one Si4+ atom. In the twelfth O2- site, O2- is bonded in a 2-coordinate geometry to two K1+, one Zr4+, and one Si4+ atom. In the thirteenth O2- site, O2- is bonded in a 2-coordinate geometry to two K1+, one Zr4+, and one Si4+ atom. In the fourteenth O2- site, O2- is bonded in a 4-coordinate geometry to two K1+, one Zr4+, and one O2- atom. In the fifteenth O2- site, O2- is bonded in a 2-coordinate geometry to two K1+, one Zr4+, and one Si4+ atom. In the sixteenth O2- site, O2- is bonded in a 2-coordinate geometry to one K1+, one Zr4+, and one Si4+ atom. In the seventeenth O2- site, O2- is bonded in a 2-coordinate geometry to two K1+, one Zr4+, and one Si4+ atom. In the eighteenth O2- site, O2- is bonded in a bent 150 degrees geometry to three K1+ and two Si4+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on K2ZrSi3O10 by Materials Project

K2ZrSi3O10 crystallizes in the orthorhombic P2_12_12_1 space group. The structure is three-dimensional. there are two inequivalent K sites. In the first K site, K is bonded in a 6-coordinate geometry to six O atoms. There are a spread of K–O bond distances ranging from 2.82–3.32 Å. In the second K site, K is bonded in a 7-coordinate geometry to seven O atoms. There are a spread of K–O bond distances ranging from 2.85–3.11 Å. Zr is bonded to six O atoms to form ZrO6 octahedra that share corners with six SiO4 tetrahedra. There are a spread of Zr–O bond distances ranging from 2.07–2.17 Å. There are three inequivalent Si sites. In the first Si site, Si is bonded to four O atoms to form SiO4 tetrahedra that share corners with two equivalent ZrO6 octahedra and corners with two SiO4 tetrahedra. The corner-sharing octahedra tilt angles range from 44–47°. There is two shorter (1.62 Å) and two longer (1.66 Å) Si–O bond length. In the second Si site, Si is bonded to four O atoms to form SiO4 tetrahedra that share corners with two equivalent ZrO6 octahedra and corners with two SiO4 tetrahedra. The corner-sharing octahedra tilt angles range from 39–55°. There are a spread of Si–O bond distances ranging from 1.61–1.67 Å. In the third Si site, Si is bonded to four O atoms to form SiO4 tetrahedra that share corners with two equivalent ZrO6 octahedra and corners with two SiO4 tetrahedra. The corner-sharing octahedra tilt angles range from 43–44°. There are a spread of Si–O bond distances ranging from 1.63–1.67 Å. There are ten inequivalent O sites. In the first O site, O is bonded in a 2-coordinate geometry to one K, one Zr, and one Si atom. In the second O site, O is bonded in a 2-coordinate geometry to two K, one Zr, and one Si atom. In the third O site, O is bonded in a 3-coordinate geometry to one K, one Zr, and one Si atom. In the fourth O site, O is bonded in a 4-coordinate geometry to two K, one Zr, and one Si atom. In the fifth O site, O is bonded in an L-shaped geometry to two K atoms. In the sixth O site, O is bonded in a distorted bent 120 degrees geometry to one K and two Si atoms. In the seventh O site, O is bonded in a distorted bent 120 degrees geometry to one K and two Si atoms. In the eighth O site, O is bonded in a distorted bent 120 degrees geometry to one K, one Zr, and one Si atom. In the ninth O site, O is bonded in a distorted bent 120 degrees geometry to one K and two Si atoms. In the tenth O site, O is bonded in a 3-coordinate geometry to one K, one Zr, and one Si atom.

36 MATERIALS SCIENCE↗