Precipitates Temperature Dependence in Ion Beam Nitrited AISI H13 Tool Steel

Autor(es)

Zagonel, Luiz F. ; Basso, Rodrigo L. O. ; Alvarez, Fernando

• Tipo de documento: Artigo Científico
• Fonte: Plasma Processes and Polymers; v. 4, p. 5-pg., 2007-04-01.

Resumo

AISI H13 tool steel samples were nitrided using broad nitrogen ion beams in a high-vacuum chamber at different temperatures. At 400 degrees C, a thin epsilon-Fe2-3N phase forms on the top of a shallow nitrided layer and the nitrogen distribution follows a complementary error function. At 500 degrees C, deviations from this behavior are observed and a thick epsilon-Fe2-3N layer is formed. At 600 degrees C, no epsilon-Fe2-3N phase is formed and the nitrogen profile is step-like. At such a temperature, coarse nitride precipitates are observed. Also, carbon losses (decarburizing) are observed upon nitriding at and above 500 degrees C. (AU)

• Processo FAPESP: 97/12069-0 - Propriedades estruturais, ópticas e de transporte em semicondutores amorfos
• Beneficiário: Fernando Alvarez
• Modalidade de apoio: Auxílio à Pesquisa - Temático