High-Pressure Chemistry of Carbon Nitride Materials
Abstract The composition and properties of the $ sp^{2} $-bonded carbon nitride precursor paracyanogen (pCN) has been studied at high pressures and temperatures. Paracyanogen decomposes to carbon and molecular nitrogen with the decomposition temperature increasing with pressure over the range of 3 t...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Stevens, Andrew J. [verfasserIn] Agee, Carl B. [verfasserIn] Lieber, Charles M. [verfasserIn] |
|---|
| Format: |
E-Artikel |
|---|---|
| Sprache: |
Englisch |
| Erschienen: |
1997 |
|---|
| Übergeordnetes Werk: |
Enthalten in: MRS online proceedings library - Warrendale, Pa. : MRS, 1998, 499(1997), 1 vom: Dez., Seite 309-314 |
|---|---|
| Übergeordnetes Werk: |
volume:499 ; year:1997 ; number:1 ; month:12 ; pages:309-314 |
| Links: |
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| DOI / URN: |
10.1557/PROC-499-309 |
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SPR041981626 |
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| 520 | |a Abstract The composition and properties of the $ sp^{2} $-bonded carbon nitride precursor paracyanogen (pCN) has been studied at high pressures and temperatures. Paracyanogen decomposes to carbon and molecular nitrogen with the decomposition temperature increasing with pressure over the range of 3 to 19 GPa. Prior to decomposition, pCN can be transformed to an atmospheric-pressure quenchable phase that is more than 25% higher in density and over an order of magnitude harder than the starting material. Structural analysis of this quenchable phase shows, however, that it consists of a $ sp^{2} $-bonded network. In addition, the decomposition kinetics of paracyanogen have been studied in detail. Rapid, self-propagating decomposition occurs above a threshold temperature. Below this, decomposition rates exhibit an Arrhenius behavior with activation energy and volume of 2.7 eV and 3.9 $ Å^{3} $, respectively The decomposition rates depend on the nitrogen density and decrease significantly with lower nitrogen concentration. Kinetic effects favoring a graphite-like, $ sp^{2} $-bonded structure may preclude the high-pressure synthesis of superhard, $ sp^{3} $-bonded carbon nitride solids below their thermodynamic stability limit, unless an optimally designed precursor is employed. | ||
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10.1557/PROC-499-309 doi (DE-627)SPR041981626 (SPR)PROC-499-309-e DE-627 ger DE-627 rakwb eng 670 ASE Stevens, Andrew J. verfasserin aut High-Pressure Chemistry of Carbon Nitride Materials 1997 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract The composition and properties of the $ sp^{2} $-bonded carbon nitride precursor paracyanogen (pCN) has been studied at high pressures and temperatures. Paracyanogen decomposes to carbon and molecular nitrogen with the decomposition temperature increasing with pressure over the range of 3 to 19 GPa. Prior to decomposition, pCN can be transformed to an atmospheric-pressure quenchable phase that is more than 25% higher in density and over an order of magnitude harder than the starting material. Structural analysis of this quenchable phase shows, however, that it consists of a $ sp^{2} $-bonded network. In addition, the decomposition kinetics of paracyanogen have been studied in detail. Rapid, self-propagating decomposition occurs above a threshold temperature. Below this, decomposition rates exhibit an Arrhenius behavior with activation energy and volume of 2.7 eV and 3.9 $ Å^{3} $, respectively The decomposition rates depend on the nitrogen density and decrease significantly with lower nitrogen concentration. Kinetic effects favoring a graphite-like, $ sp^{2} $-bonded structure may preclude the high-pressure synthesis of superhard, $ sp^{3} $-bonded carbon nitride solids below their thermodynamic stability limit, unless an optimally designed precursor is employed. Agee, Carl B. verfasserin aut Lieber, Charles M. verfasserin aut Enthalten in MRS online proceedings library Warrendale, Pa. : MRS, 1998 499(1997), 1 vom: Dez., Seite 309-314 (DE-627)57782046X (DE-600)2451008-7 1946-4274 nnns volume:499 year:1997 number:1 month:12 pages:309-314 https://dx.doi.org/10.1557/PROC-499-309 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_2005 AR 499 1997 1 12 309-314 |
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10.1557/PROC-499-309 doi (DE-627)SPR041981626 (SPR)PROC-499-309-e DE-627 ger DE-627 rakwb eng 670 ASE Stevens, Andrew J. verfasserin aut High-Pressure Chemistry of Carbon Nitride Materials 1997 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract The composition and properties of the $ sp^{2} $-bonded carbon nitride precursor paracyanogen (pCN) has been studied at high pressures and temperatures. Paracyanogen decomposes to carbon and molecular nitrogen with the decomposition temperature increasing with pressure over the range of 3 to 19 GPa. Prior to decomposition, pCN can be transformed to an atmospheric-pressure quenchable phase that is more than 25% higher in density and over an order of magnitude harder than the starting material. Structural analysis of this quenchable phase shows, however, that it consists of a $ sp^{2} $-bonded network. In addition, the decomposition kinetics of paracyanogen have been studied in detail. Rapid, self-propagating decomposition occurs above a threshold temperature. Below this, decomposition rates exhibit an Arrhenius behavior with activation energy and volume of 2.7 eV and 3.9 $ Å^{3} $, respectively The decomposition rates depend on the nitrogen density and decrease significantly with lower nitrogen concentration. Kinetic effects favoring a graphite-like, $ sp^{2} $-bonded structure may preclude the high-pressure synthesis of superhard, $ sp^{3} $-bonded carbon nitride solids below their thermodynamic stability limit, unless an optimally designed precursor is employed. Agee, Carl B. verfasserin aut Lieber, Charles M. verfasserin aut Enthalten in MRS online proceedings library Warrendale, Pa. : MRS, 1998 499(1997), 1 vom: Dez., Seite 309-314 (DE-627)57782046X (DE-600)2451008-7 1946-4274 nnns volume:499 year:1997 number:1 month:12 pages:309-314 https://dx.doi.org/10.1557/PROC-499-309 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_2005 AR 499 1997 1 12 309-314 |
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10.1557/PROC-499-309 doi (DE-627)SPR041981626 (SPR)PROC-499-309-e DE-627 ger DE-627 rakwb eng 670 ASE Stevens, Andrew J. verfasserin aut High-Pressure Chemistry of Carbon Nitride Materials 1997 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract The composition and properties of the $ sp^{2} $-bonded carbon nitride precursor paracyanogen (pCN) has been studied at high pressures and temperatures. Paracyanogen decomposes to carbon and molecular nitrogen with the decomposition temperature increasing with pressure over the range of 3 to 19 GPa. Prior to decomposition, pCN can be transformed to an atmospheric-pressure quenchable phase that is more than 25% higher in density and over an order of magnitude harder than the starting material. Structural analysis of this quenchable phase shows, however, that it consists of a $ sp^{2} $-bonded network. In addition, the decomposition kinetics of paracyanogen have been studied in detail. Rapid, self-propagating decomposition occurs above a threshold temperature. Below this, decomposition rates exhibit an Arrhenius behavior with activation energy and volume of 2.7 eV and 3.9 $ Å^{3} $, respectively The decomposition rates depend on the nitrogen density and decrease significantly with lower nitrogen concentration. Kinetic effects favoring a graphite-like, $ sp^{2} $-bonded structure may preclude the high-pressure synthesis of superhard, $ sp^{3} $-bonded carbon nitride solids below their thermodynamic stability limit, unless an optimally designed precursor is employed. Agee, Carl B. verfasserin aut Lieber, Charles M. verfasserin aut Enthalten in MRS online proceedings library Warrendale, Pa. : MRS, 1998 499(1997), 1 vom: Dez., Seite 309-314 (DE-627)57782046X (DE-600)2451008-7 1946-4274 nnns volume:499 year:1997 number:1 month:12 pages:309-314 https://dx.doi.org/10.1557/PROC-499-309 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_2005 AR 499 1997 1 12 309-314 |
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10.1557/PROC-499-309 doi (DE-627)SPR041981626 (SPR)PROC-499-309-e DE-627 ger DE-627 rakwb eng 670 ASE Stevens, Andrew J. verfasserin aut High-Pressure Chemistry of Carbon Nitride Materials 1997 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract The composition and properties of the $ sp^{2} $-bonded carbon nitride precursor paracyanogen (pCN) has been studied at high pressures and temperatures. Paracyanogen decomposes to carbon and molecular nitrogen with the decomposition temperature increasing with pressure over the range of 3 to 19 GPa. Prior to decomposition, pCN can be transformed to an atmospheric-pressure quenchable phase that is more than 25% higher in density and over an order of magnitude harder than the starting material. Structural analysis of this quenchable phase shows, however, that it consists of a $ sp^{2} $-bonded network. In addition, the decomposition kinetics of paracyanogen have been studied in detail. Rapid, self-propagating decomposition occurs above a threshold temperature. Below this, decomposition rates exhibit an Arrhenius behavior with activation energy and volume of 2.7 eV and 3.9 $ Å^{3} $, respectively The decomposition rates depend on the nitrogen density and decrease significantly with lower nitrogen concentration. Kinetic effects favoring a graphite-like, $ sp^{2} $-bonded structure may preclude the high-pressure synthesis of superhard, $ sp^{3} $-bonded carbon nitride solids below their thermodynamic stability limit, unless an optimally designed precursor is employed. Agee, Carl B. verfasserin aut Lieber, Charles M. verfasserin aut Enthalten in MRS online proceedings library Warrendale, Pa. : MRS, 1998 499(1997), 1 vom: Dez., Seite 309-314 (DE-627)57782046X (DE-600)2451008-7 1946-4274 nnns volume:499 year:1997 number:1 month:12 pages:309-314 https://dx.doi.org/10.1557/PROC-499-309 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_2005 AR 499 1997 1 12 309-314 |
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10.1557/PROC-499-309 doi (DE-627)SPR041981626 (SPR)PROC-499-309-e DE-627 ger DE-627 rakwb eng 670 ASE Stevens, Andrew J. verfasserin aut High-Pressure Chemistry of Carbon Nitride Materials 1997 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract The composition and properties of the $ sp^{2} $-bonded carbon nitride precursor paracyanogen (pCN) has been studied at high pressures and temperatures. Paracyanogen decomposes to carbon and molecular nitrogen with the decomposition temperature increasing with pressure over the range of 3 to 19 GPa. Prior to decomposition, pCN can be transformed to an atmospheric-pressure quenchable phase that is more than 25% higher in density and over an order of magnitude harder than the starting material. Structural analysis of this quenchable phase shows, however, that it consists of a $ sp^{2} $-bonded network. In addition, the decomposition kinetics of paracyanogen have been studied in detail. Rapid, self-propagating decomposition occurs above a threshold temperature. Below this, decomposition rates exhibit an Arrhenius behavior with activation energy and volume of 2.7 eV and 3.9 $ Å^{3} $, respectively The decomposition rates depend on the nitrogen density and decrease significantly with lower nitrogen concentration. Kinetic effects favoring a graphite-like, $ sp^{2} $-bonded structure may preclude the high-pressure synthesis of superhard, $ sp^{3} $-bonded carbon nitride solids below their thermodynamic stability limit, unless an optimally designed precursor is employed. Agee, Carl B. verfasserin aut Lieber, Charles M. verfasserin aut Enthalten in MRS online proceedings library Warrendale, Pa. : MRS, 1998 499(1997), 1 vom: Dez., Seite 309-314 (DE-627)57782046X (DE-600)2451008-7 1946-4274 nnns volume:499 year:1997 number:1 month:12 pages:309-314 https://dx.doi.org/10.1557/PROC-499-309 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_2005 AR 499 1997 1 12 309-314 |
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Abstract The composition and properties of the $ sp^{2} $-bonded carbon nitride precursor paracyanogen (pCN) has been studied at high pressures and temperatures. Paracyanogen decomposes to carbon and molecular nitrogen with the decomposition temperature increasing with pressure over the range of 3 to 19 GPa. Prior to decomposition, pCN can be transformed to an atmospheric-pressure quenchable phase that is more than 25% higher in density and over an order of magnitude harder than the starting material. Structural analysis of this quenchable phase shows, however, that it consists of a $ sp^{2} $-bonded network. In addition, the decomposition kinetics of paracyanogen have been studied in detail. Rapid, self-propagating decomposition occurs above a threshold temperature. Below this, decomposition rates exhibit an Arrhenius behavior with activation energy and volume of 2.7 eV and 3.9 $ Å^{3} $, respectively The decomposition rates depend on the nitrogen density and decrease significantly with lower nitrogen concentration. Kinetic effects favoring a graphite-like, $ sp^{2} $-bonded structure may preclude the high-pressure synthesis of superhard, $ sp^{3} $-bonded carbon nitride solids below their thermodynamic stability limit, unless an optimally designed precursor is employed. |
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Abstract The composition and properties of the $ sp^{2} $-bonded carbon nitride precursor paracyanogen (pCN) has been studied at high pressures and temperatures. Paracyanogen decomposes to carbon and molecular nitrogen with the decomposition temperature increasing with pressure over the range of 3 to 19 GPa. Prior to decomposition, pCN can be transformed to an atmospheric-pressure quenchable phase that is more than 25% higher in density and over an order of magnitude harder than the starting material. Structural analysis of this quenchable phase shows, however, that it consists of a $ sp^{2} $-bonded network. In addition, the decomposition kinetics of paracyanogen have been studied in detail. Rapid, self-propagating decomposition occurs above a threshold temperature. Below this, decomposition rates exhibit an Arrhenius behavior with activation energy and volume of 2.7 eV and 3.9 $ Å^{3} $, respectively The decomposition rates depend on the nitrogen density and decrease significantly with lower nitrogen concentration. Kinetic effects favoring a graphite-like, $ sp^{2} $-bonded structure may preclude the high-pressure synthesis of superhard, $ sp^{3} $-bonded carbon nitride solids below their thermodynamic stability limit, unless an optimally designed precursor is employed. |
| abstract_unstemmed |
Abstract The composition and properties of the $ sp^{2} $-bonded carbon nitride precursor paracyanogen (pCN) has been studied at high pressures and temperatures. Paracyanogen decomposes to carbon and molecular nitrogen with the decomposition temperature increasing with pressure over the range of 3 to 19 GPa. Prior to decomposition, pCN can be transformed to an atmospheric-pressure quenchable phase that is more than 25% higher in density and over an order of magnitude harder than the starting material. Structural analysis of this quenchable phase shows, however, that it consists of a $ sp^{2} $-bonded network. In addition, the decomposition kinetics of paracyanogen have been studied in detail. Rapid, self-propagating decomposition occurs above a threshold temperature. Below this, decomposition rates exhibit an Arrhenius behavior with activation energy and volume of 2.7 eV and 3.9 $ Å^{3} $, respectively The decomposition rates depend on the nitrogen density and decrease significantly with lower nitrogen concentration. Kinetic effects favoring a graphite-like, $ sp^{2} $-bonded structure may preclude the high-pressure synthesis of superhard, $ sp^{3} $-bonded carbon nitride solids below their thermodynamic stability limit, unless an optimally designed precursor is employed. |
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<?xml version="1.0" encoding="UTF-8"?><collection xmlns="http://www.loc.gov/MARC21/slim"><record><leader>01000caa a22002652 4500</leader><controlfield tag="001">SPR041981626</controlfield><controlfield tag="003">DE-627</controlfield><controlfield tag="005">20220112052533.0</controlfield><controlfield tag="007">cr uuu---uuuuu</controlfield><controlfield tag="008">201115s1997 xx |||||o 00| ||eng c</controlfield><datafield tag="024" ind1="7" ind2=" "><subfield code="a">10.1557/PROC-499-309</subfield><subfield code="2">doi</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(DE-627)SPR041981626</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(SPR)PROC-499-309-e</subfield></datafield><datafield tag="040" ind1=" " ind2=" "><subfield code="a">DE-627</subfield><subfield code="b">ger</subfield><subfield code="c">DE-627</subfield><subfield code="e">rakwb</subfield></datafield><datafield tag="041" ind1=" " ind2=" "><subfield code="a">eng</subfield></datafield><datafield tag="082" ind1="0" ind2="4"><subfield code="a">670</subfield><subfield code="q">ASE</subfield></datafield><datafield tag="100" ind1="1" ind2=" "><subfield code="a">Stevens, Andrew J.</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="245" ind1="1" ind2="0"><subfield code="a">High-Pressure Chemistry of Carbon Nitride Materials</subfield></datafield><datafield tag="264" ind1=" " ind2="1"><subfield code="c">1997</subfield></datafield><datafield tag="336" ind1=" " ind2=" "><subfield code="a">Text</subfield><subfield code="b">txt</subfield><subfield code="2">rdacontent</subfield></datafield><datafield tag="337" ind1=" " ind2=" "><subfield code="a">Computermedien</subfield><subfield code="b">c</subfield><subfield code="2">rdamedia</subfield></datafield><datafield tag="338" ind1=" " ind2=" "><subfield code="a">Online-Ressource</subfield><subfield code="b">cr</subfield><subfield code="2">rdacarrier</subfield></datafield><datafield tag="520" ind1=" " ind2=" "><subfield code="a">Abstract The composition and properties of the $ sp^{2} $-bonded carbon nitride precursor paracyanogen (pCN) has been studied at high pressures and temperatures. Paracyanogen decomposes to carbon and molecular nitrogen with the decomposition temperature increasing with pressure over the range of 3 to 19 GPa. Prior to decomposition, pCN can be transformed to an atmospheric-pressure quenchable phase that is more than 25% higher in density and over an order of magnitude harder than the starting material. Structural analysis of this quenchable phase shows, however, that it consists of a $ sp^{2} $-bonded network. In addition, the decomposition kinetics of paracyanogen have been studied in detail. Rapid, self-propagating decomposition occurs above a threshold temperature. Below this, decomposition rates exhibit an Arrhenius behavior with activation energy and volume of 2.7 eV and 3.9 $ Å^{3} $, respectively The decomposition rates depend on the nitrogen density and decrease significantly with lower nitrogen concentration. Kinetic effects favoring a graphite-like, $ sp^{2} $-bonded structure may preclude the high-pressure synthesis of superhard, $ sp^{3} $-bonded carbon nitride solids below their thermodynamic stability limit, unless an optimally designed precursor is employed.</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Agee, Carl B.</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Lieber, Charles M.</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="773" ind1="0" ind2="8"><subfield code="i">Enthalten in</subfield><subfield code="t">MRS online proceedings library</subfield><subfield code="d">Warrendale, Pa. : MRS, 1998</subfield><subfield code="g">499(1997), 1 vom: Dez., Seite 309-314</subfield><subfield code="w">(DE-627)57782046X</subfield><subfield code="w">(DE-600)2451008-7</subfield><subfield code="x">1946-4274</subfield><subfield code="7">nnns</subfield></datafield><datafield tag="773" ind1="1" ind2="8"><subfield code="g">volume:499</subfield><subfield code="g">year:1997</subfield><subfield code="g">number:1</subfield><subfield code="g">month:12</subfield><subfield code="g">pages:309-314</subfield></datafield><datafield tag="856" ind1="4" ind2="0"><subfield code="u">https://dx.doi.org/10.1557/PROC-499-309</subfield><subfield code="z">lizenzpflichtig</subfield><subfield code="3">Volltext</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_USEFLAG_A</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">SYSFLAG_A</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_SPRINGER</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2005</subfield></datafield><datafield tag="951" ind1=" " ind2=" "><subfield code="a">AR</subfield></datafield><datafield tag="952" ind1=" " ind2=" "><subfield code="d">499</subfield><subfield code="j">1997</subfield><subfield code="e">1</subfield><subfield code="c">12</subfield><subfield code="h">309-314</subfield></datafield></record></collection>
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