Corrosion of high temperature metallic materials in VHTR

Cabet, C.; Rouillard, Fabien

doi:10.1016/j.jnucmat.2009.03.029

Cited by 52 publications

(35 citation statements)

References 21 publications

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“…KEYWORDS : Impure Helium, VHTR, Corrosion, Thermodynamics, Surface Reaction H2 20Pa, H2O 0.5Pa, CH4 2Pa, and CO 5Pa was used, based on previous reports [1][2][3][4][5].…”

Section: Methodsmentioning

confidence: 99%

“…The carbon monoxide, methane, hydrogen, and water that are formed by the reaction with the graphite in the core induce various surface reactions that lead to material property changes with time [1]. The compositional changes of these impurities also change the surface reactions that are possible on the material exposed to an impure helium environment.…”

Section: Introductionmentioning

confidence: 99%

“…Table 1 shows the chemical composition of Alloy 617. Alloy 617 strengthened by a Mo and Co solid solution is known as the most promising IHX material because it has the most creep resistance [1]. A gas composition of The corrosion of materials exposed to high temperature helium in a very high temperature reactor is caused by interaction with the impurities in the helium.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Investigation on Material Degradation of Alloy 617 in High Temperature Impure Helium Coolant

Kim

Lee²,

Jeong³

et al. 2011

Nuclear Engineering and Technology

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“…KEYWORDS : Impure Helium, VHTR, Corrosion, Thermodynamics, Surface Reaction H2 20Pa, H2O 0.5Pa, CH4 2Pa, and CO 5Pa was used, based on previous reports [1][2][3][4][5].…”

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Investigation on Material Degradation of Alloy 617 in High Temperature Impure Helium Coolant

Kim

Lee²,

Jeong³

et al. 2011

Nuclear Engineering and Technology

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“…Some results are summarized e.g. in references [4][5][6]. In reference [4], the results from material research within the HTR program in approximately 1960-1990 are summarized, the list of metallic alloys for possible use for HTR components is introduced in this reference.…”

Section: Introductionmentioning

confidence: 99%

“…In reference [4], the results from material research within the HTR program in approximately 1960-1990 are summarized, the list of metallic alloys for possible use for HTR components is introduced in this reference. In references [5,6], the high temperature corrosion mechanism of nickel alloys in HTR helium environment is described, the results of corrosion tests of alloys Inconel 617 and Haynes 230 in impure helium at up to 950°C are summarized.…”

Section: Introductionmentioning

confidence: 99%

Testing of high temperature materials within HTR program in Czech Republic

Berka

Kalivodová

2016

EPJ Nuclear Sci. Technol.

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Abstract. Research institutes and also industrial companies in Czech Republic are involved in High Temperature Gas Cooled Reactor (HTGR) program and activities related to the study of advanced materials and HTGR technologies. These activities are supported by EC (within international projects, e.g. FP7-ARCHER, ALLIANCE, GoFastR can be mentioned) and also by Technology Agency of Czech Republic. Within these activities, degradation of metallic and ceramic materials in the high temperature helium atmosphere is investigated, and also new experimental facilities for material testing are built. As examples of tested materials, Alloy 800 H, ferritic steel P91, austenitic steel 316, Inconel 713 and 738 and corundum ceramics could be named. The selected results of exposure experiments in the high temperature helium environment are presented in this paper.

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High Temperature Oxidation Behavior of Alloy 617 and Haynes 230 in Impurity-Controlled Helium Environments

et al. 2010

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The high temperature oxidation behavior of alloy 617 and Haynes 230 have been investigated for VHTR intermediate heat exchanger applications. Oxidation tests were carried out for up to 500 h at 900°C and 1000°C in impure helium environments containing H 2 , H 2 O, CO, CO 2 , and CH 4 . The oxidation kinetics of the alloys followed a parabolic rate law in all cases. In the impure helium environments with very low oxygen, the external oxides of alloy 617 were composed of a Cr 2 O 3 layer, TiO 2 ridges on the grain boundaries, and isolated MnCr 2 O 4 grains on top of the Cr 2 O 3 layer. On the other hand, those of Haynes 230 consisted of a Cr 2 O 3 inner layer and a protective MnCr 2 O 4 outer layer, which increased the oxidation resistance. The effect of small amounts of CH 4 and H 2 on the oxidation kinetics of the alloys was insignificant. Irregular oxide morphology, such as cellular Cr 2 O 3 oxides for alloy 617 and MnCr 2 O 4 platelets for Haynes 230, was formed in the impure helium environment at 900°C. For Haynes 230, along with platelets, whiskers were frequently found at the tip of the MnCr 2 O 4 oxide crystals.

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Corrosion of high temperature metallic materials in VHTR

Cited by 52 publications

References 21 publications

Investigation on Material Degradation of Alloy 617 in High Temperature Impure Helium Coolant

Investigation on Material Degradation of Alloy 617 in High Temperature Impure Helium Coolant

Testing of high temperature materials within HTR program in Czech Republic

High Temperature Oxidation Behavior of Alloy 617 and Haynes 230 in Impurity-Controlled Helium Environments

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