Microstructural analysis and oxidation protection behavior of Cr-Ni surface coatings of 347 stainless steel by rapid mirror scanning of a high power CO2 laser

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dc.contributor.authorRamos Grez, Jorge A.
dc.contributor.authorBourell, David L.
dc.contributor.authorGovindaraju, Madhav Rao
dc.date.accessioned2024-01-10T12:40:21Z
dc.date.available2024-01-10T12:40:21Z
dc.date.issued2009
dc.description.abstractA surface coating technique that uses a I kW CO, laser beam actuated by two high-speed raster-scanning mirrors was utilized to selectively consolidate predeposited powder coatings consisting of 50%Cr-50% Ni (wt %) over the surface of 347 austenitic stainless steel specimens. The oxidation resistance of the coated samples was evaluated by heating them in air at 750 degrees C for up to 300 h. The migration behavior of the coating elements was studied. Comprehensive characterization of the samples was performed using scanning electron microscopy, energy dispersive spectrochemical analysis, and optical metallography. Surface protective coatings produced by this technique demonstrated a strong metallurgical bond with homogeneous dilution, low porosity, and uniform thickness. Metallographical analysis showed migration of coating species toward the bulk preferentially by means of: grain boundary diffusion as a result of high-temperature exposure. Preliminary results from this study demonstrate that the surface modification by high-speed selective raster-scanning of a high-power laser beam is a versatile and expedient technique that could be used for applications that require large Surface area coverage for oxidation protection. (C) 2009 Laser Institute of America.
dc.description.funderDepartment of Energy
dc.fechaingreso.objetodigital2024-05-13
dc.format.extent7 páginas
dc.fuente.origenWOS
dc.identifier.doi10.2351/1.3071396
dc.identifier.eissn1938-1387
dc.identifier.issn1042-346X
dc.identifier.urihttps://doi.org/10.2351/1.3071396
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/77301
dc.identifier.wosidWOS:000264723000004
dc.information.autorucIngeniería;Ramos-Grez JA ;S/I;81538
dc.issue.numero1
dc.language.isoen
dc.nota.accesoSin adjunto
dc.pagina.final22
dc.pagina.inicio16
dc.publisherAMER INST PHYSICS
dc.revistaJOURNAL OF LASER APPLICATIONS
dc.rightsregistro bibliográfico
dc.subjectcoating process
dc.subjectraster-scanning
dc.subjectlaser alloying
dc.subjectoxidation protection
dc.subjectDIODE-LASER
dc.subjectCORROSION BEHAVIOR
dc.subjectMETAL
dc.titleMicrostructural analysis and oxidation protection behavior of Cr-Ni surface coatings of 347 stainless steel by rapid mirror scanning of a high power CO2 laser
dc.typeartículo
dc.volumen21
sipa.codpersvinculados81538
sipa.indexWOS
sipa.indexScopus
sipa.trazabilidadCarga SIPA;09-01-2024
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