Plasma nitriding of 410S ferritic/martensitic stainless steel: microstructure, wear and corrosion properties
نویسندگان
چکیده
In this work, plasma nitriding treatments were performed on ferritic/martensitic stainless steel type 410S at 400 ºC (Low-temperature Plasma Nitriding - LTPN) and 530 (Conventional CPN). The carried out under a 75% N2 -25% H2 gas mixture for 20 hours. After LTPN, layer composed of expanded ferrite/martensite with minor fraction iron nitrides was obtained. CPN, the nitrided surface consists an outermost compound 15 μm thick followed by diffusion zone depth 170 μm. both, CPN LTPN treatments, hardness increases more than four times compared to original non-nitrided results in flat-type transverse hardening profile diffuse-type LTPN. friction coefficients conditions, evaluated progressive linear scratching test, are lower condition without nitriding. wear rate after is half that found non-nitriding condition. corrosion resistance immersion test aqueous solution 3% FeCl3 88 hours shows behavior same as condition, while mass loss higher and, therefore, smaller observed precipitation chromium during CPM leads depletion metal matrix. show feasibility promoting low temperatures improving tribological properties compromising resistance.
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ژورنال
عنوان ژورنال: Tecnologia em Metalurgia, Materiais e Mineração
سال: 2023
ISSN: ['2176-1523', '2176-1515']
DOI: https://doi.org/10.4322/2176-1523.20222809