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|Type:||Artigo de periódico|
|Title:||Microstructure and corrosion behaviour of pulsed plasma-nitrided AISI H13 tool steel|
de Souza, FS
|Abstract:||The effect of pulsed plasma nitriding temperature and time on the pitting corrosion behaviour of AISI H13 tool steel in 0.9% NaCl solutions was investigated by cyclic polarization. The pitting potential (E(pit)) was found to be dependent on the composition, microstructure and morphology of the surface layers, whose properties were determined by X-ray diffraction and scanning electron microscopy techniques. The best corrosion protection was observed for samples nitrided at 480 degrees C and 520 degrees C. Under such experimental conditions the E(pit)-values shifted up to 1.25 V in the positive direction. (C) 2010 Elsevier Ltd. All rights reserved.|
|Editor:||Pergamon-elsevier Science Ltd|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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