Metallurgical study on erosion and corrosion behaviors of steels exposed to liquid lead–bismuth flow

Kondo, Masatoshi; Takahashi, Minoru; Suzuki, Tadashi; Ishikawa, Kotaro; Hata, Koji; Qiu, Suizheng; Sekimoto, Hiroshi

doi:10.1016/j.jnucmat.2004.08.037

Cited by 106 publications

(56 citation statements)

References 9 publications

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“…The steels mounted in upstream region were chosen to be more corrosion resistant based on the previous study 12) in order to prevent the influence of metal dissolution from specimens upstream on corrosion of specimens downstream.…”

Section: Test Materialsmentioning

confidence: 99%

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Corrosion of Steels in Lead-Bismuth Flow

Kondo

Takahashi

Sawada

et al. 2006

Journal of Nuclear Science and Technology

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For the development of lead-bismuth (Pb-Bi) cooled fast breeder reactors, the corrosion characteristics of various steels in a flowing Pb-Bi were investigated by means of steel corrosion test performed in the flowing Pb-Bi for 1,000 h. It was found that liquid metal corrosion was inhibited by single or multiple oxide layers formed on the steel surfaces. The oxide layers can be classified to an inner layer and an outer one. The existence of the inner oxide layer might be more important for the corrosion resistance since the inner one was compact and stuck to the steel surface while the outer one was easily broken into small pieces with cracks and peeled from the substrate. The effect of Cr content in steels on corrosion resistance was investigated. Stable Cr rich oxide layers were easily formed on the high Cr steels. The weight losses were lower in the steels with higher Cr contents. The content of Cr in the steel was effective to form the thin and compact Cr-rich oxide layer and suppressed the corrosion. In the case of Si rich steel, the weight loss was lower than the trends of weight loss with Cr content.

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Section: Test Materialsmentioning

confidence: 99%

“…The effect of Cr and Si content in steels on corrosion behaviors in the flowing Pb-Bi was studied experimentally. Figure 1 shows the schematic of the Pb-Bi forced convection loop 12) used in the present corrosion test. The working fluid was Pb-Bi with a melting point of 125…”

Section: Introductionmentioning

confidence: 99%

Corrosion of Steels in Lead-Bismuth Flow

Kondo

Takahashi

Sawada

et al. 2006

Journal of Nuclear Science and Technology

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“…For example, the corrosion of steels in liquid Li is influenced by oxygen [1], carbon [5] and nitrogen [6] dissolved in the melt. The corrosion mechanism of the steels in leadbismuth (Pb-Bi) alloy [7,8] changes by the oxygen potential in the alloy [9,10]. The solubility data of hydrogen isotopes in the Pb-Li alloy are dispersed widely [11], and the one of the possible causes must be the difference of impurity conditions of the alloy.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Chemical Behaviors of Non-Metal Impurities in Pb, Pb-Bi and Pb-Li by Temperature Programmed Desorption Mass Spectrometer Analysis

Kondo

Nakajima

Tanaka

et al. 2016

Plasma and Fusion Research

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The chemical behaviors of non-metal impurities such as O 2 , H 2 , N 2 , H 2 O, CO 2 and CO in lead (Pb) metal, lead-bismuth (Pb-Bi) alloy and lead-lithium (Pb-Li) alloys were experimentally investigated by means of temperature programmed desorption mass spectrometer (TPD-MS) analysis. Desorption of H 2 O and CO 2 from the Pb metal and the Pb-Bi alloy was clearly detected by TPD-MS analysis. However, desorption of H 2 O and CO 2 from the Pb-Li alloys was much less than that from the Pb metal and the Pb-Bi alloy, since these molecules are chemically unstable and react with Li in the Pb-Li alloys. Then, oxygen and hydrogen must be dissolved in Pb-Li alloys as they form the chemical compounds of Li (i.e., Li 2 O, LiOH and LiH). Large desorption of hydrogen from solid Pb-Li alloys by their heating was detected. The possible mechanism for the large desorption of hydrogen from the Pb-Li alloys is based on the decomposition of LiH and Pb-Li-H at high temperature. The chemical behaviors of the non-metal impurities in the Pb-Li alloys was modeled based on the thermodynamic stability. The methodologies for the fabrication of high-purity Pb-Li alloys and the control of the impurity condition are discussed.

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“…For this reason studies on corrosion of structural steels in liquid Pb-Bi have been made. [4][5][6][7][8][9][10][11][12][13][14][15] In the present design of ADS, inlet and outlet temperatures of liquid Pb-Bi coolant are 330…”

Section: Introductionmentioning

confidence: 99%