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Precipitates Temperature Dependence in Ion Beam Nitrited AISI H13 Tool Steel
Author(s) -
Zagonel Luiz F.,
Basso Rodrigo L. O.,
Alvarez Fernando
Publication year - 2007
Publication title -
plasma processes and polymers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.644
H-Index - 74
eISSN - 1612-8869
pISSN - 1612-8850
DOI - 10.1002/ppap.200731808
Subject(s) - nitriding , materials science , nitrogen , nitride , layer (electronics) , phase (matter) , ion , metallurgy , ion beam , carbon fibers , analytical chemistry (journal) , tool steel , carbon nitride , liquid nitrogen , composite material , chemistry , biochemistry , organic chemistry , chromatography , photocatalysis , composite number , catalysis
AISI H13 tool steel samples were nitrided using broad nitrogen ion beams in a high‐vacuum chamber at different temperatures. At 400 °C, a thin ε ‐Fe 2‐3 N phase forms on the top of a shallow nitrided layer and the nitrogen distribution follows a complementary error function. At 500 °C, deviations from this behavior are observed and a thick ε ‐Fe 2‐3 N layer is formed. At 600 °C, no ε ‐Fe 2‐3 N 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 °C.