Composition, structure and properties of the oxide films formed on the stainless steel 316L in a primary type PWR environment

Belo, M. Da Cunha; Walls, M.G.; Hakiki, N. E.; Corset, J.; Picquenard, Éric; Sagon, Gérard; Noel, D.

doi:10.1016/s0010-938x(97)00158-3

Cited by 175 publications

(69 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…It has been proposed that passive films formed on stainless steels have a duplex structure with an internal chromium rich layer and an external layer rich in iron [31,32] and in hydroxyl ions [33]. This duplex nature has been supported by Mott-Schottky tests carried out by different researchers [31,[34][35][36][37][38][39][40] that suggested a film with duplex electronic properties composed of an outer n-type film and an inner p-type oxide film. Figure 3c shows a broad capacitive plateau in the low frequency range with phase angles of approximately À808, typical of passive materials, for the solution annealed and the 100 h aged samples.…”

Section: Resultsmentioning

confidence: 99%

Use of SECM to study the electrochemical behavior of DIN 1.4575 superferritic stainless steel aged at 475 °C

Terada

Padilha

Simões

et al. 2009

Materials & Corrosion

View full text Add to dashboard Cite

In order to lower the excessive costs of metallic prosthesis materials alternatives to Ti and Ti alloys have been searched. In this study, the corrosion resistance of the DIN 1.4575 superferritic stainless steel, either solution annealed or solution annealed and aged at 475 8C for periods varying from 100 to 1080 h, was investigated by electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization methods in Hanks' solution. The solution annealed and the aged for 1080 h samples were also tested using scanning electrochemical microscopy (SECM) in a 0.1 mol/L NaCl solution at 25 8C. The EIS results showed that the corrosion resistance of the DIN 1.4575 steel decreases with heat treatment time at 475 8C probably due to alpha prime formation. Besides the diminution of the overall impedance values, the low frequency limit of the Nyquist diagrams show a progressive change from an almost capacitive response to a resistive behavior as the heat treatment time increases. Pitting corrosion resistance also decreased with aging time at 475 8C.

show abstract

Section: Resultsmentioning

confidence: 99%

Use of SECM to study the electrochemical behavior of DIN 1.4575 superferritic stainless steel aged at 475 °C

Terada

Padilha

Simões

et al. 2009

Materials & Corrosion

View full text Add to dashboard Cite

show abstract

“…All the open literature agreed that oxide layer formed in PWR primary environment has duplex structure while its chemistry and crystal structure remain controversial [87][88][89][90][91][92][93][94][95][96][97][98][99][100][101]. Even if it is well established that the outer layer is composed of magnetite Fe 3 O 4 , the inner layer composition is reported to be either a fcc phase enriched in chromium [76,77,[90][91][92][93][94][95][96][97][98][99][100][101], or an hexagonal phase (Cr 2 O 3 ) [87,92,93], or even a mixture of both phases [92]. What's more the early stages of oxidation process (1 min to 5 hours) without applying stress was still not investigated since the already published results describe oxides formed after long exposure times (up to 1,000 hours).…”

Section: State Of the Artmentioning

confidence: 99%

Using Microscopy to Help with the Understanding of Degradation Mechanisms Observed in Materials of Pressurized Water Reactors

Legras¹,

Volgin²,

Radiguet³

et al. 2017

JMSE-B

View full text Add to dashboard Cite

Abstract:Even if temperature, pressure and chemistry of the cooling water are not very high and aggressive, materials used in PWRs (Pressurized Water Reactors) are exposed to different degradation mechanisms. One of the main goals of the research programs in this field is to develop physical model of the mechanisms down to the atomic scale. Such approach needs a clear description and understanding of the degradation mechanisms at the same small scale. This paper illustrates the benefits of different microscopies and of their last improvements up to the promising possibilities of monochromated and aberrations corrected TEM/STEM. A specific focus is placed on four different degradation mechanisms observed in austenitic stainless steel: irradiation ageing, corrosion fatigue, stress corrosion cracking and corrosion.

show abstract

“…2(a)] and graphite and additionally a weak peak at 701 cm 1 [ Fig. 11(a)], which, because of its position, is assigned to the spinel-type oxide 44 wave lengths. The procedure is reproducible on other greyish areas.…”

Section: Rub Tested Thermally Sprayed Ceramic 8 Wt% Y 2 O 3 -Zro 2 Comentioning

confidence: 99%

“…The peak positions and varying band shapes suggest the presence of iron-nickel oxides of spinel type with varying contents of nickel 44. Intensity/arbitr.…”

mentioning

confidence: 96%

Raman microprobe spectroscopy and transmission electron microscopy of thermal sprayed ZrO₂ coatings before and after rub testing of outer air seals

Witke¹,

Österle²,

Skopp³

et al. 2001

J Raman Spectroscopy

View full text Add to dashboard Cite

Abstract8 wt% Y2O3–ZrO2 spray powder and thermally sprayed as thermal barrier coatings on outer air seals were characterized by Raman microprobe spectroscopy (RMS) and transmission electron microscopy to investigate the lateral distribution, composition, structure and grain size of ZrO2 phases and to separate ZrO2 and Y2O3. RMS of transfer layers on ZrO2‐coated shrouds after rub tests against SiC laser‐tipped metallic blades showed the formation of metallic oxides MeIMeII2O4 of spinel type. Wear tracks were partly covered by graphite and spinel‐type oxides. In some cases, the latter were better detectable after laser enhanced cleaning by burning off the covering carbon layer. Copyright © 2001 John Wiley & Sons, Ltd.

show abstract

Composition, structure and properties of the oxide films formed on the stainless steel 316L in a primary type PWR environment

Cited by 175 publications

References 32 publications

Use of SECM to study the electrochemical behavior of DIN 1.4575 superferritic stainless steel aged at 475 °C

Use of SECM to study the electrochemical behavior of DIN 1.4575 superferritic stainless steel aged at 475 °C

Using Microscopy to Help with the Understanding of Degradation Mechanisms Observed in Materials of Pressurized Water Reactors

Raman microprobe spectroscopy and transmission electron microscopy of thermal sprayed ZrO₂ coatings before and after rub testing of outer air seals

Contact Info

Product

Resources

About

Composition, structure and properties of the oxide films formed on the stainless steel 316L in a primary type PWR environment

Cited by 175 publications

References 32 publications

Use of SECM to study the electrochemical behavior of DIN 1.4575 superferritic stainless steel aged at 475 °C

Use of SECM to study the electrochemical behavior of DIN 1.4575 superferritic stainless steel aged at 475 °C

Using Microscopy to Help with the Understanding of Degradation Mechanisms Observed in Materials of Pressurized Water Reactors

Raman microprobe spectroscopy and transmission electron microscopy of thermal sprayed ZrO2 coatings before and after rub testing of outer air seals

Contact Info

Product

Resources

About

Raman microprobe spectroscopy and transmission electron microscopy of thermal sprayed ZrO₂ coatings before and after rub testing of outer air seals