Chemical formation of erbium oxide layer on V–4Cr–4Ti during exposure to liquid lithium doped with erbium

Yang, Zhenyu; Suzuki, Akihiro; Muroga, T.; Katahira, Koji

doi:10.1016/j.jnucmat.2004.04.208

Cited by 29 publications

(23 citation statements)

References 9 publications

(12 reference statements)

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“…29) In addition to the physical deposition, in-situ coating with Er 2 O 3 on V-4Cr-4Ti is being developed. 30) As shown in Fig. 12, Er 2 O 3 thin insulating layer was formed on V-4Cr-4Ti during its exposure to liquid lithium by reaction of precharged oxygen in the vanadium alloy and pre-doped Er in Li.…”

Section: )mentioning

confidence: 97%

Current Status of Fusion Reactor Structural Materials R&D

Kohyama

2005

Mater. Trans.

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Japanese activities on fusion structural materials R&D have been well organized under the coordination of university programs and JAERI/NIMS programs more than two decades. Where, two categories of structural materials have been studied, those are; reduced activation ferritic/martensitic steels (RAFs) as reference material and vanadium alloys and SiC/SiC composite materials as advanced materials. The R&D histories of these candidate materials and the present status in Japan are reviewed with the brief explanation of Japanese strategy and current status of fusion reactor engineering R&D.

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Section: )mentioning

confidence: 97%

Current Status of Fusion Reactor Structural Materials R&D

Kohyama

2005

Mater. Trans.

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“…Actually, the thermodynamic evaluation indicates that affinity of Er to N is higher in comparison with Li and as a result Er samples, similar to the V-alloy, did not dissolve but was nitrified. In the previous works [2,3] it was shown that be- …”

Section: Liquid LI Immersion Test 331 N-containing Limentioning

confidence: 98%

“…This technique requires pre-charging of V-alloy with oxygen in gaseous medium before immersion in Li while liquid metal should be doped by active impurity (Er) [1]. Insulator Er 2 O 3 coating was successfully formed in-situ on the surface of V4Ti-4Cr alloy (NIFS HEAT 2) and the phenomenological model of oxide layer growth and evolution was developed [2][3][4][5]. Most of the works were carried out under the "ideal" conditions when all the ingredients used were of high purity.…”

Section: Introductionmentioning

confidence: 99%

Effect of Lithium Purity on In-Situ Formation of Er<sub>2</sub>O<sub>3 </sub>Oxide Layer on V-4Ti-4Cr Alloy

Tsisar

Yeliseyeva

Muroga

et al. 2012

Plasma and Fusion Research

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Effect of Li purity with respect to N on the features of in-situ formation of Er 2 O 3 oxide coating on the surface of V-4Ti-4Cr alloy was investigated. Samples of V-4Ti-4Cr alloy (NIFS HEAT 2) were pre-charged by oxygen in Ar-7%O 2 at 700• C. The hardened zone with needle shaped Ti-O net structure was formed in the near-surface layers of V-alloy after oxidation. Oxygen pre-charged samples were exposed to N-containing Li (C N[Li] ≤ 0.2 wt%) at 700• C and Li pre-cleaned by getter (Zr) at 650• C for 100 h. Both melts were doped with active Er impurity. It was shown that in-situ formation of E 2 O 3 oxide coating on the surface of V-alloys depends strongly on the purity level of Li with regard to the N. In N-containing Li the coating was not formed on the surface of V-alloy, while whole oxygen pre-stored in V-matrix was dissolved by Li. On the contrary, in Li precleaned with respect to N by Zr getter, the insulating oxide film was formed.

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“…4. MHD insulator coatings with Er 2 O 3 including in situ coating technique have been developed in domestic and JUPITER-II [24]. Research for key technology of tritium recovery from liquid lithium has been carried out as a common technology to IFMIF, focusing on tritium gettering with yttrium [25].…”

Section: Randd On Liquid Blanketmentioning

confidence: 99%

Overview of research and development activities on fusion nuclear technologies in Japan

Tanaka¹

2006

Fusion Engineering and Design

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Chemical formation of erbium oxide layer on V–4Cr–4Ti during exposure to liquid lithium doped with erbium

Cited by 29 publications

References 9 publications

Current Status of Fusion Reactor Structural Materials R&D

Current Status of Fusion Reactor Structural Materials R&D

Effect of Lithium Purity on In-Situ Formation of Er<sub>2</sub>O<sub>3 </sub>Oxide Layer on V-4Ti-4Cr Alloy

Overview of research and development activities on fusion nuclear technologies in Japan

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