Étude de l’influence de la carburation sur l’oxydation de l’alliage 330Cb (Fe-35Ni-18Cr-1Nb-2Si) à 900 °C

Buscail, Henri; Issartel, Christophe; Nguyen, Cong Tung; Perrier, S.; Fleurentin, Alexandre

doi:10.1051/mattech/2010101

Cited by 5 publications

(4 citation statements)

References 21 publications

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“…Then chromia‐forming alloys with additional silicon are used. However, former studies have shown that the oxidation in air leads to a poorly adherent chromia scale and did not permit a continuous silica scale formation even though the alloy contains about 2 wt% silicon . One way to act on the oxide scale formation consists of modifying the gaseous environment, using inert gases .…”

Section: Introductionmentioning

confidence: 99%

Influence of atmosphere on high‐temperature oxidation of Fe‐Cr‐Si model alloy

Issartel

Buscail

Mathieu

2019

Materials & Corrosion

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The aim of this study is to show the influence of the gaseous environment on the ferritic Fe‐Cr‐Si model alloy oxidation during 70 hrs, at 900 and 950°C. Two different atmospheres have been used, air or nitrogen containing 5 vol% hydrogen (N2–5%H2). After air oxidation, a nonadherent chromia scale formed. In the N2–5%H2 gaseous environment, it clearly appears that silicon segregation near the internal scale‐metal interface is favoured. In this low oxygen‐containing gas, adherent chromia, and silica scales have been formed. Silica subscale associated to an adherent chromia scale obtained in low‐oxygen conditions are a good protection barrier against carburisation.

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Section: Introductionmentioning

confidence: 99%

Influence of atmosphere on high‐temperature oxidation of Fe‐Cr‐Si model alloy

Issartel

Buscail

Mathieu

2019

Materials & Corrosion

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“…The HR‐120 alloy showed the poorest cyclic‐oxidation resistance, due to bad scale adhesion and the tendency of iron (33 wt%) to oxidize. Former studies have shown that the oxidation of the AISI 330Cb alloy at 900°C in the air lead to a poorly adherent chromia scale and did not permit a continuous silica scale formation even though the alloy contains about 2 wt% silicon . Then, the protection against corrosive environments was not ensured.…”

Section: Introductionmentioning

confidence: 99%

“…Former studies have shown that the oxidation of the AISI 330Cb alloy at 900°C in the air lead to a poorly adherent chromia scale and did not permit a continuous silica scale formation even though the alloy contains about 2 wt% silicon. [7][8][9] Then, the protection against corrosive environments was not ensured. One way to act on the oxide scale formation consists in modifying the gaseous environment, using inert gases.…”

Section: Introductionmentioning

confidence: 99%

Role of Na₂CO₃ on an AISI 330 austenitic stainless steels oxidation at 900°C

Buscail

Issartel

Riffard

et al. 2019

Materials & Corrosion

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This study shows the influence of sodium carbonate coatings on the austenitic AISI 330 (Fe–35Ni–19Cr–1.3Si) oxidized during 48 hr at 900°C. The N2‐5 vol% H2 gaseous environment was used to simulate industrial heat treatment conditions. Silica scale formation is promoted by low oxygen‐containing gaseous environments and the high alloy silicon content. On this alloy, an amorphous silica scale is formed after the blank material oxidation. It indicates that silicon is free to diffuse in the alloy and forms a silica scale at the internal interface. On Na2CO3‐coated specimens, no silica scale is formed. Then, sodium combines with silicon to form amorphous glass particles. A comparison has been performed with results obtained on a AISI 330Cb niobium containing alloy in the same oxidizing conditions. It is then concluded that sodium carbonate coatings could only favor silica formation on niobium containing alloy due to a reaction between sodium and niobium.

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“…In most cases, the extent of internal attack was significantly greater than that of metal loss. Former studies have shown that the oxidation of the 330Cb alloy at 900 °C in air lead to a poorly adherent chromia scale and did not permit a continuous silica scale formation even though the alloy contains about 2 wt.% silicon [5][6][7]. Then, the protection against corrosive environments is not ensured.…”

Section: Introductionmentioning

confidence: 99%

Influence of Sodium Hydroxide on the Austenitic 330Cb Alloy Oxidation at High Temperature

Buscail¹,

Rolland²,

Riffard³

et al. 2017

Oxid Met

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International audienceSodium hydroxide is found on metallic conveyor belts as residue of the degreasing process of metallic screws put inside heat treatment furnaces at 900 °C. The 330Cb (Fe-34Ni-23Cr-1Nb-1.55Si) alloy is used to build these conveyor belts. With time, the amount of sodium hydroxide increases on the 330Cb steel surface. The aim of this work is to show the influence of the NaOH amount on the 330Cb oxidation during 48 h, at 900 °C. Results show that, on this austenitic steel, a protective silica scale formation is promoted by low oxygen containing gaseous environments and the high alloy silicon content. With low NaOH deposits the oxide layer is adherent and a SiO 2 cristobalite subscale is formed. It is also demonstrated that sodium combines with niobium to form NaNbO 3. When the NaOH amount exceeds 0.265 mg.cm-2 on the alloy surface, severe oxidation is observed leading to a fast growing FeCr 2 O 4 oxide scale

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Étude de l’influence de la carburation sur l’oxydation de l’alliage 330Cb (Fe-35Ni-18Cr-1Nb-2Si) à 900 °C

Cited by 5 publications

References 21 publications

Influence of atmosphere on high‐temperature oxidation of Fe‐Cr‐Si model alloy

Influence of atmosphere on high‐temperature oxidation of Fe‐Cr‐Si model alloy

Role of Na₂CO₃ on an AISI 330 austenitic stainless steels oxidation at 900°C

Influence of Sodium Hydroxide on the Austenitic 330Cb Alloy Oxidation at High Temperature

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Étude de l’influence de la carburation sur l’oxydation de l’alliage 330Cb (Fe-35Ni-18Cr-1Nb-2Si) à 900 °C

Cited by 5 publications

References 21 publications

Influence of atmosphere on high‐temperature oxidation of Fe‐Cr‐Si model alloy

Influence of atmosphere on high‐temperature oxidation of Fe‐Cr‐Si model alloy

Role of Na2CO3 on an AISI 330 austenitic stainless steels oxidation at 900°C

Influence of Sodium Hydroxide on the Austenitic 330Cb Alloy Oxidation at High Temperature

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Role of Na₂CO₃ on an AISI 330 austenitic stainless steels oxidation at 900°C