An alumina coating, produced from the oxidation of an aluminum-electroplated deposit, improved the oxidation resistance in air of a ferritic, AISI-type 446 stainless steel, Fe-24Cr-1.2Al containing 0.15% of mischmetal, and an austenitic AISI 321 stainless steel containing 0.53% Ti, at least up to 1100-degrees-C In thermal-cycling tests from 1000-degrees-C to room temperature, the alumina coating was adherent on the ferritic and austenitic steels, for at least 1000 and about 700 cycles, respectively. The addition of rare earths to the ferritic steels and titanium to the austenitic, provided good adhesion between the coating and substrate. The porous nature of the coating was found to be very beneficial by causing the coating to be more resistant to thermal and growth stresses. Oxidation mechanisms are discussed in the light of results obtained from the thermogravimetric tests and metallographic observations by SEM-ED analysis.

HIGH-TEMPERATURE OXIDATION AND THERMAL CYCLING OF ALUMINUM-ELECTROPLATED STAINLESS-STEELS / G. A., Capuano; A., Dang; Bernabai, Umberto; Felli, Ferdinando. - In: OXIDATION OF METALS. - ISSN 0030-770X. - STAMPA. - 39:3-4(1993), pp. 263-279. [10.1007/bf00665615]

HIGH-TEMPERATURE OXIDATION AND THERMAL CYCLING OF ALUMINUM-ELECTROPLATED STAINLESS-STEELS

BERNABAI, Umberto;FELLI, Ferdinando
1993

Abstract

An alumina coating, produced from the oxidation of an aluminum-electroplated deposit, improved the oxidation resistance in air of a ferritic, AISI-type 446 stainless steel, Fe-24Cr-1.2Al containing 0.15% of mischmetal, and an austenitic AISI 321 stainless steel containing 0.53% Ti, at least up to 1100-degrees-C In thermal-cycling tests from 1000-degrees-C to room temperature, the alumina coating was adherent on the ferritic and austenitic steels, for at least 1000 and about 700 cycles, respectively. The addition of rare earths to the ferritic steels and titanium to the austenitic, provided good adhesion between the coating and substrate. The porous nature of the coating was found to be very beneficial by causing the coating to be more resistant to thermal and growth stresses. Oxidation mechanisms are discussed in the light of results obtained from the thermogravimetric tests and metallographic observations by SEM-ED analysis.
1993
alumina coating; high-temperature oxidation; stainless steel
01 Pubblicazione su rivista::01a Articolo in rivista
HIGH-TEMPERATURE OXIDATION AND THERMAL CYCLING OF ALUMINUM-ELECTROPLATED STAINLESS-STEELS / G. A., Capuano; A., Dang; Bernabai, Umberto; Felli, Ferdinando. - In: OXIDATION OF METALS. - ISSN 0030-770X. - STAMPA. - 39:3-4(1993), pp. 263-279. [10.1007/bf00665615]
File allegati a questo prodotto
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/13536
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 14
  • ???jsp.display-item.citation.isi??? 7
social impact