Effects of Processing Parameters on Alumina Coatings Deposited on Nickel Substrates by Reacting Aluminum Chloride and Hydrogen/Carbon Dioxide Gas Mixtures

Pure nickel coupons were used as substrates in the deposition of alumina (Al2O3) from the reaction of aluminum chloride (AlCl3) with hydrogen/carbon dioxide gas mixtures in the temperature range of 954°–1100°C and system pressures of 2.7–13.3 kPa. The apparent activation energy estimated from the co...

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Veröffentlicht in:	Journal of the American Ceramic Society 1998-07, Vol.81 (7), p.1945-1948
Hauptverfasser:	Bae, Yong W., Lee, Woo Y., Besmann, Theodore M., Cavin, O. Burl, Watkins, Thomas R.
Format:	Artikel
Sprache:	eng
Schlagworte:	ALUMINIUM CHLORIDES ALUMINIUM OXIDES Applied sciences Building materials. Ceramics. Glasses CARBON DIOXIDE Ceramic industries Chemical industry and chemicals CHEMICAL VAPOR DEPOSITION Exact sciences and technology HYDROGEN MATERIALS SCIENCE MICROSTRUCTURE Miscellaneous NICKEL SUBSTRATES Technical ceramics TEMPERATURE RANGE 1000-4000 K X-RAY DIFFRACTION
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Beschreibung
Zusammenfassung:	Pure nickel coupons were used as substrates in the deposition of alumina (Al2O3) from the reaction of aluminum chloride (AlCl3) with hydrogen/carbon dioxide gas mixtures in the temperature range of 954°–1100°C and system pressures of 2.7–13.3 kPa. The apparent activation energy estimated from the coating growth rate averaged 320 kJ/mol at 13.3 kPa. At temperatures
ISSN:	0002-7820 1551-2916
DOI:	10.1111/j.1151-2916.1998.tb02572.x