Nitriding using cathodic cage technique of martensitic stainless steel AISI 420 with addition of CH4
AUTOR(ES)
De Sousa, R.R.M., De Araújo, F.O., Da Costa, J.A.P., De Sousa, R.S., Alves JR., C.
FONTE
Matéria (Rio de Janeiro)
DATA DE PUBLICAÇÃO
2008-06
RESUMO
AISI 420 martensitic stainless steel samples were nitrided by cathodic cage technique with addition of methane in the atmosphere aiming to reduce chromium nitride precipitation, to increase hardness and wear resistance without the presence of characteristic defects inherent to the ionic nitriding process. Microhardness measurements and X-ray analysis confirm the formation of a high hardness double-layer constituted by two regions: one internal region composed of carbon and another composed of nitrogen.
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