Electrochemical corrosion behavior of LDX 2101® duplex stainless steel in a fluoride-containing environment

被引：5
|
作者：
Rosalbino, Francesco [1 ]
Scavino, Giorgio [1 ]
Ubertalli, Graziano [1 ]
机构：
[1] Politecn Torino, Dipartimento Sci Appl & Tecnol DISAT, Corso Duca Abruzzi 24, I-10129 Turin, Italy
来源：
MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION | 2020年 / 71卷 / 12期
关键词：
corrosion behavior; duplex stainless steel; electrochemical impedance spectroscopy; fluoride; passive film; DENTAL IMPLANT APPLICATIONS; PASSIVE FILMS; ARTIFICIAL SALIVA; TITANIUM-ALLOY; FE/CR-ALLOYS; SURFACE; RESISTANCE; NITROGEN; PH; LAYERS;
D O I：
10.1002/maco.202011826
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The effect of fluoride on the electrochemical corrosion behavior of an LDX 2101 (R) duplex stainless steel (DSS) was studied. Open-circuit potential (E-OC) and electrochemical impedance spectroscopy (EIS) measurements were carried out in artificial saliva and with the addition of fluoride (1 wt% NaF). The electrochemical corrosion behavior of the AISI 316L austenitic stainless steel (SS) was also evaluated for comparison. Both open-circuit potential and EIS results indicate that DSS and austenitic SS undergo spontaneous passivation due to spontaneously formed oxide film passivating the metallic surface, in the simulated aggressive environments. However, LDX 2101 (R) exhibits superior corrosion resistance as compared with AISI 316L, and this improvement is ascribed to the formation of a passive film which shows a higher protective effect than the one formed on AISI 316L.
引用
收藏
页码：2021 / 2028
页数：8
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