Hydrothermal degradation of chemical vapour deposited SiC fibres
| ISSN: |
1573-4803
|
|---|---|
| Source: |
Springer Online Journal Archives 1860-2000
|
| Topics: |
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
|
| Notes: |
Abstract The interaction of chemical vapour-deposited (CVD) SiC fibres with H2O at 200 MPa and 400–700°C (673–973K), was investigated. With increasing temperature and time, the smooth surface of the amorphous SiC fibre becomes rough and sponge-like. This modification can be controlled by adjusting temperature and duration of the hydrothermal treatment. CVD SiC dissolves in supercritical water in a first order reaction with Ea=150 kJ mol-1. According to thermodynamic calculations, the main products are SiO2, CH4 and H2. The formation of carbon is also predicted. Films of amorphous and graphitic carbon have been observed, but only small areas of the fibres were coated with carbon. Amorphous silica, quartz, cristobalite and keatite were deposited on the surface of fibres in larger quantities © 1998 Kluwer Academic Publishers
|
| Type of Medium: |
Electronic Resource
|
| URL: |
| _version_ | 1798296743716061185 |
|---|---|
| autor | Kraft, T. Nickel, K. G. Gogotsi, Y. G. |
| autorsonst | Kraft, T. Nickel, K. G. Gogotsi, Y. G. |
| book_url | http://dx.doi.org/10.1023/A:1004480814477 |
| datenlieferant | nat_lic_papers |
| hauptsatz | hsatz_simple |
| identnr | NLM194689719 |
| issn | 1573-4803 |
| journal_name | Journal of materials science |
| materialart | 1 |
| notes | Abstract The interaction of chemical vapour-deposited (CVD) SiC fibres with H2O at 200 MPa and 400–700°C (673–973K), was investigated. With increasing temperature and time, the smooth surface of the amorphous SiC fibre becomes rough and sponge-like. This modification can be controlled by adjusting temperature and duration of the hydrothermal treatment. CVD SiC dissolves in supercritical water in a first order reaction with Ea=150 kJ mol-1. According to thermodynamic calculations, the main products are SiO2, CH4 and H2. The formation of carbon is also predicted. Films of amorphous and graphitic carbon have been observed, but only small areas of the fibres were coated with carbon. Amorphous silica, quartz, cristobalite and keatite were deposited on the surface of fibres in larger quantities © 1998 Kluwer Academic Publishers |
| package_name | Springer |
| publikationsjahr_anzeige | 1998 |
| publikationsjahr_facette | 1998 |
| publikationsjahr_intervall | 8004:1995-1999 |
| publikationsjahr_sort | 1998 |
| publisher | Springer |
| reference | 33 (1998), S. 4357-4364 |
| search_space | articles |
| shingle_author_1 | Kraft, T. Nickel, K. G. Gogotsi, Y. G. |
| shingle_author_2 | Kraft, T. Nickel, K. G. Gogotsi, Y. G. |
| shingle_author_3 | Kraft, T. Nickel, K. G. Gogotsi, Y. G. |
| shingle_author_4 | Kraft, T. Nickel, K. G. Gogotsi, Y. G. |
| shingle_catch_all_1 | Kraft, T. Nickel, K. G. Gogotsi, Y. G. Hydrothermal degradation of chemical vapour deposited SiC fibres Abstract The interaction of chemical vapour-deposited (CVD) SiC fibres with H2O at 200 MPa and 400–700°C (673–973K), was investigated. With increasing temperature and time, the smooth surface of the amorphous SiC fibre becomes rough and sponge-like. This modification can be controlled by adjusting temperature and duration of the hydrothermal treatment. CVD SiC dissolves in supercritical water in a first order reaction with Ea=150 kJ mol-1. According to thermodynamic calculations, the main products are SiO2, CH4 and H2. The formation of carbon is also predicted. Films of amorphous and graphitic carbon have been observed, but only small areas of the fibres were coated with carbon. Amorphous silica, quartz, cristobalite and keatite were deposited on the surface of fibres in larger quantities © 1998 Kluwer Academic Publishers 1573-4803 15734803 Springer |
| shingle_catch_all_2 | Kraft, T. Nickel, K. G. Gogotsi, Y. G. Hydrothermal degradation of chemical vapour deposited SiC fibres Abstract The interaction of chemical vapour-deposited (CVD) SiC fibres with H2O at 200 MPa and 400–700°C (673–973K), was investigated. With increasing temperature and time, the smooth surface of the amorphous SiC fibre becomes rough and sponge-like. This modification can be controlled by adjusting temperature and duration of the hydrothermal treatment. CVD SiC dissolves in supercritical water in a first order reaction with Ea=150 kJ mol-1. According to thermodynamic calculations, the main products are SiO2, CH4 and H2. The formation of carbon is also predicted. Films of amorphous and graphitic carbon have been observed, but only small areas of the fibres were coated with carbon. Amorphous silica, quartz, cristobalite and keatite were deposited on the surface of fibres in larger quantities © 1998 Kluwer Academic Publishers 1573-4803 15734803 Springer |
| shingle_catch_all_3 | Kraft, T. Nickel, K. G. Gogotsi, Y. G. Hydrothermal degradation of chemical vapour deposited SiC fibres Abstract The interaction of chemical vapour-deposited (CVD) SiC fibres with H2O at 200 MPa and 400–700°C (673–973K), was investigated. With increasing temperature and time, the smooth surface of the amorphous SiC fibre becomes rough and sponge-like. This modification can be controlled by adjusting temperature and duration of the hydrothermal treatment. CVD SiC dissolves in supercritical water in a first order reaction with Ea=150 kJ mol-1. According to thermodynamic calculations, the main products are SiO2, CH4 and H2. The formation of carbon is also predicted. Films of amorphous and graphitic carbon have been observed, but only small areas of the fibres were coated with carbon. Amorphous silica, quartz, cristobalite and keatite were deposited on the surface of fibres in larger quantities © 1998 Kluwer Academic Publishers 1573-4803 15734803 Springer |
| shingle_catch_all_4 | Kraft, T. Nickel, K. G. Gogotsi, Y. G. Hydrothermal degradation of chemical vapour deposited SiC fibres Abstract The interaction of chemical vapour-deposited (CVD) SiC fibres with H2O at 200 MPa and 400–700°C (673–973K), was investigated. With increasing temperature and time, the smooth surface of the amorphous SiC fibre becomes rough and sponge-like. This modification can be controlled by adjusting temperature and duration of the hydrothermal treatment. CVD SiC dissolves in supercritical water in a first order reaction with Ea=150 kJ mol-1. According to thermodynamic calculations, the main products are SiO2, CH4 and H2. The formation of carbon is also predicted. Films of amorphous and graphitic carbon have been observed, but only small areas of the fibres were coated with carbon. Amorphous silica, quartz, cristobalite and keatite were deposited on the surface of fibres in larger quantities © 1998 Kluwer Academic Publishers 1573-4803 15734803 Springer |
| shingle_title_1 | Hydrothermal degradation of chemical vapour deposited SiC fibres |
| shingle_title_2 | Hydrothermal degradation of chemical vapour deposited SiC fibres |
| shingle_title_3 | Hydrothermal degradation of chemical vapour deposited SiC fibres |
| shingle_title_4 | Hydrothermal degradation of chemical vapour deposited SiC fibres |
| sigel_instance_filter | dkfz geomar wilbert ipn albert fhp |
| source_archive | Springer Online Journal Archives 1860-2000 |
| timestamp | 2024-05-06T09:56:57.383Z |
| titel | Hydrothermal degradation of chemical vapour deposited SiC fibres |
| titel_suche | Hydrothermal degradation of chemical vapour deposited SiC fibres |
| topic | ZL |
| uid | nat_lic_papers_NLM194689719 |