ISSN 2594-5327
72nd ABM Annual Congress — vol. 72, num.72 (2017)
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Corrosion testing was performed in white liquor from a Brazilian Kraft mill. Specimens of duplex stainless steel (DSS) and lean duplex (LDSS) were exposed at 170 °C for 30 days to simulate conditions of the digester. Corrosion rates were determined from weight loss measurements. After this exposure, the corrosion products formed on the steel surface was characterized by using scanning electron microscope (SEM) equipped with EDS, X-Ray Diffraction (XRD), and X-ray photoelectron spectrometer (XPS). EBSD can be used to quantify of basis balance phases in DSS and LDSS. General corrosion rates for UNS S32304 LDSS were higher than the UNS 31803 DSS in industrial white liquor at 170 °C for 30 days. XPS and XRD analyses indicated that the film formed after the immersion test may be consisted by Fe and Cr oxides and sulphides.
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Duplex stainless steels, Weight loss, Industrial white liquor, Autoclave
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Como citar
Esteves, Luiza;
Garcia, João Henrique Nery;
Gastelois, Pedro Lana;
Macedo, Waldemar Augusto de Almeida;
Campos, Wagner Reis da Costa;
Lins, Vanessa Freitas Cunha.
CHARACTERIZATION OF FILM AFTER IMMERSION TEST IN INDUSTRIAL WHITE LIQUOR
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p. 3168-3177.
In: 72nd ABM Annual Congress,
São Paulo,
2017.
ISSN: 2594-5327
, DOI 10.5151/1516-392X-30842
