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Abstract:

An optical noncontact technique is presented that provides a two-dimensional map of the hardness of treated steel at the micrometer level. The photodeflection technique for determining the thermal diffusivity is shown to be a useful and rapid way to determine the hardness increase profile in two dimensions with only minor preparation of the sample (flat polish). This is possible due to the strong correlation found for this type of material between the inverse of the diffusivity and the hardness increment after treatment. The diffusivity retrieval is performed by a single measurement of the phase delay between the pump beam and the photodeflection signal thus allowing a rapid scanning of the surface. The surface scans of the hardness performed with this technique showed that anomalous regions can be identified that direct optical or scanning electron microscopy observation do not reveal. © 2010 Elsevier B.V.

Registro:

Documento: Artículo
Título:Two-dimensional mapping of micro-hardness increase on surface treated steel determined by photothermal deflection microscopy
Autor:Archiopoli, U.C.; Mingolo, N.; Martínez, O.E.
Filiación:Universidad de Buenos Aires, Facultad de Ingenieria, Dto. Fisica, Buenos Aires, Argentina
Universidad de Buenos Aires, Facultad de Ciencias Exactas, Dto. Fisica, Buenos Aires, Argentina
CONICET, Argentina
Palabras clave:Hardness; Surface characterization; Thermal diffusivity; After-treatment; Anomalous regions; Diffusivities; Micrometer levels; Non-contact techniques; Phase delay; Photodeflection technique; Photothermal deflections; Pump beams; Strong correlation; Surface characterization; Two dimensional mapping; Two-dimension; Two-dimensional map; Hardness; Scanning electron microscopy; Surface properties; Thermal diffusion; Thermal diffusivity; Two dimensional
Año:2011
Volumen:205
Número:8-9
Página de inicio:3087
Página de fin:3092
DOI: http://dx.doi.org/10.1016/j.surfcoat.2010.11.022
Título revista:Surface and Coatings Technology
Título revista abreviado:Surf. Coat. Technol.
ISSN:02578972
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02578972_v205_n8-9_p3087_Archiopoli

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Citas:

---------- APA ----------
Archiopoli, U.C., Mingolo, N. & Martínez, O.E. (2011) . Two-dimensional mapping of micro-hardness increase on surface treated steel determined by photothermal deflection microscopy. Surface and Coatings Technology, 205(8-9), 3087-3092.
http://dx.doi.org/10.1016/j.surfcoat.2010.11.022
---------- CHICAGO ----------
Archiopoli, U.C., Mingolo, N., Martínez, O.E. "Two-dimensional mapping of micro-hardness increase on surface treated steel determined by photothermal deflection microscopy" . Surface and Coatings Technology 205, no. 8-9 (2011) : 3087-3092.
http://dx.doi.org/10.1016/j.surfcoat.2010.11.022
---------- MLA ----------
Archiopoli, U.C., Mingolo, N., Martínez, O.E. "Two-dimensional mapping of micro-hardness increase on surface treated steel determined by photothermal deflection microscopy" . Surface and Coatings Technology, vol. 205, no. 8-9, 2011, pp. 3087-3092.
http://dx.doi.org/10.1016/j.surfcoat.2010.11.022
---------- VANCOUVER ----------
Archiopoli, U.C., Mingolo, N., Martínez, O.E. Two-dimensional mapping of micro-hardness increase on surface treated steel determined by photothermal deflection microscopy. Surf. Coat. Technol. 2011;205(8-9):3087-3092.
http://dx.doi.org/10.1016/j.surfcoat.2010.11.022