INVESTIGADORES
GOMEZ Bernardo Jose Armando
congresos y reuniones científicas
Título:
Influence of ion nitriding process on the properties of zirconia coating deposited on stainless steel
Autor/es:
B. J. GÓMEZ,; R. CARUSO,; L. NACHEZ,; A. DÍAZ-PARRALEJO; J. FEUGEAS; O. DE SANCTIS
Lugar:
Angra dos Reis, Brazil
Reunión:
Congreso; XII Latin American Congress of Surface Science and its Applications; 2005
Institución organizadora:
Claf
Resumen:
ZrO2-3 mol % Y2O3-coated AISI 310 stainless steel was nitrided using plasma produced by dc
pulsed discharge in a mixture of N2 and H2 at an equilibrium temperature of 450 oC. Profile
chemical analyses with GDOS (glow discharge optical spectroscopy) and XRD showed the formation
of Nitrogen/Y-ZrO2 solid solution. Nitrogen atoms enter in the zirconia substituting to the oxygen
atoms in the network. Although, the nitrogen content measured in zirconia coating is greater than
the allowed maximum nitrogen content in doped-zirconia solid solution, the formation of oxynitrides
could not be detected. The phase structure was investigated by X-ray diffractometry The mechanical
properties were studied by means ultramicrohardness indentation tests. The nitruration improves
the mechanical responses of the ZrO2-3 mol% Y2O3 -coated AISI 310 stainless steel.