Estudio de la oxidación a elevada temperatura de ocho aleaciones en atmósferas de combustión de biomasa
| dc.contributor.author | Berlanga Labari, Carlos | |
| dc.contributor.author | Fernández Carrasquilla, Javier | |
| dc.contributor.department | Ingeniería Mecánica, Energética y de Materiales | es_ES |
| dc.contributor.department | Mekanika, Energetika eta Materialen Ingeniaritza | eu |
| dc.date.accessioned | 2014-05-21T07:55:24Z | |
| dc.date.available | 2014-05-21T07:55:24Z | |
| dc.date.issued | 2008 | |
| dc.description.abstract | La combustión de biomasa, especialmente de paja de cereal, genera un ambiente muy corrosivo, particularmente, cerca de los tubos sobrecalentadores. El cloro es el principal agente corrosivo en las plantas de biomasa. Este trabajo se centra en comprobar el comportamiento de ocho aleaciones comerciales en una ambiente de combustión de biomasa. Los materiales estudiados han sido las siguientes: AISI 347 CG (1.4550), AISI 347 FG (1.4550), AISI 316LN (1.4910), ESSHETE 1250 (1.4982), AC 66 (1.4877), X20CrMoV12:1 (1.4922) y AISI 347 recubiertos con Inconel 625 e Inconel 686. Los ensayos se han realizado en la caldera de la planta de biomasa de Sangüesa (Navarra, España) durante 8.000 y 15.000 h a una temperatura de 500-550 °C. Los resultados indican un buen comportamiento de los aceros inoxidables austeníticos y de las aleaciones de Inconel, mientras que el del acero martensítico no ha sido aceptable. Se ha propuesto el mecanismo conocido como “oxidación activa” para interpretar el comportamiento a la corrosión de estos materiales en estos medios. | es_ES |
| dc.description.abstract | The combustion of biomass, especially wheat straw, generates very corrosive media particularly near the superheater tubes. Chlorine is known to be the main corrosive agent in biomass-fired plants. This paper focuses on the study of the corrosivity of such environments composed of gases and ashes, at high temperature, on eight commercial alloys with different chromium and nickel contents. These have been: AISI 347 CG (1.4550), AISI 347 FG(1.4550), AISI 316LN (1.4910), ESSHETE 1250 (1.4982), AC 66 (1.4877), X20CrMoV12:1 (1.4922) and AISI 347 coated with Inconel 625 and Inconel 686. Corrosion tests in the boiler have been performed during 8.000 h and 15.000 h at temperatures between 500 degrees C y 550 degrees C in the biomass plant of Sanguesa (Navarra, Spain). Experimental results showed an unacceptable behaviour far the martensitic steel, acceptable far the austenitics and good far the inconels. The appearance of the corrosion attack was also investigated to obtain understanding of the corrosion mechanism. The corrosion mechanism by molten salts has been rejected. The active oxidation corrosion mechanism has been proposed as the most probable in order to interpretate the corrosion behaviour of these materials in these environments. | en |
| dc.format.mimetype | application/pdf | en |
| dc.identifier.doi | 10.3989/revmetalm.2008.v44.i4.126 | |
| dc.identifier.issn | 0034-8570 (print) | |
| dc.identifier.issn | 1988-4222 (electronic) | |
| dc.identifier.other | 739 | |
| dc.identifier.uri | https://academica-e.unavarra.es/handle/2454/10563 | |
| dc.language.iso | spa | en |
| dc.publisher | CENIM | es_ES |
| dc.relation.ispartof | Revista de Metalurgia, 2008, 44 (4). Págs. 343-354 | es_ES |
| dc.relation.publisherversion | https://dx.doi.org/10.3989/revmetalm.2008.v44.i4.126 | |
| dc.rights.accessRights | info:eu-repo/semantics/openAccess | |
| dc.rights.uri | https://creativecommons.org/licenses/by-nc/3.0/es/ | |
| dc.subject | Oxidación a elevadas temperaturas | es_ES |
| dc.subject | Ataque por cloro | es_ES |
| dc.subject | Sobrecalentadores | es_ES |
| dc.subject | Biomasa | es_ES |
| dc.subject | High temperature corrosion | en |
| dc.subject | Chorine attack | en |
| dc.subject | Superheaters | en |
| dc.subject | Biomass | en |
| dc.subject | Mixed oxidation | en |
| dc.subject | Corrosion | en |
| dc.subject | Chlorine | en |
| dc.subject | Oxygen | en |
| dc.subject | Iron | en |
| dc.title | Estudio de la oxidación a elevada temperatura de ocho aleaciones en atmósferas de combustión de biomasa | es_ES |
| dc.title.alternative | Study of the oxidation to high temperature of eight alloys in atmospheres of combustion of biomass | en |
| dc.type | info:eu-repo/semantics/article | |
| dc.type.version | info:eu-repo/semantics/acceptedVersion | |
| dspace.entity.type | Publication | |
| relation.isAuthorOfPublication | dda98d71-b4db-4289-a0bb-e50f7aea96bf | |
| relation.isAuthorOfPublication | 4e20d103-c0e0-4c52-9928-2151147ef8b2 | |
| relation.isAuthorOfPublication.latestForDiscovery | dda98d71-b4db-4289-a0bb-e50f7aea96bf |