IFIR   05409
INSTITUTO DE FISICA DE ROSARIO
Unidad Ejecutora - UE
artículos
Título:
Prediction of hardness-depth profile from indentations at the surface of materials
Autor/es:
J. LESAGE, D.CHICOT, L. NOSEI, J. FEUGEAS
Revista:
SURFACE AND COATINGS TECHNOLOGY
Editorial:
ELSEVIER SCIENCE SA
Referencias:
Año: 2009
ISSN:
0257-8972
Resumen:
Surface treatments are used to increase the resistance of the surface of mechanical parts. Unlike
thin films, surface hardened materials may cover several tenths of millimetres in depth. The
effectiveness of such treatments is studied by analysing the hardnessdepth profile. In this paper,
the authors describe a method to evaluate the hardness profile with depth based on the
estimation of the contribution of deeper zones of the hardened material to the hardness of the
surface through the practice of a series of indentations on the surface with increasing loads. This
model allows estimating the hardness of virtual layers through a step by step calculation process
at increasing depths under the surface of the material. The model was satisfactorily tested on
stainless steel previously surface treated through ion nitriding with a duplex process consisting in
ion nitriding followed by the irradiation with high energy short duration plasma beams of argon.