Stability of ZrCo and ZrNi to heat cycles in hydrogen atmosphere

Kuniaki Watanabe; Masanori Hara; Masao Matsuyama; Isao Kanesaka; Toshiki Kabutomori

doi:10.13182/fst95-a30614

Stability of ZrCo and ZrNi to heat cycles in hydrogen atmosphere

Kuniaki Watanabe^*, Masanori Hara, Masao Matsuyama, Isao Kanesaka, Toshiki Kabutomori

^*Corresponding author for this work

Hydrogen Isotope Research Center, Organization for Promotion of Research

Research output: Contribution to journal › Conference article › peer-review

38 Scopus citations

Abstract

The stability of ZrNi and ZrCo to heat cycles in hydrogen atmosphere was studied through changes in absorption desorption characteristics and in crystallographic structures ZrCo easily lost its absorption- desorption capacity of hydrogen below 30 heat cycles between room temperature and a given temperature in a range of 400 approx.600 °C. X-ray diffraction analysis showed that ZrCoH₃ initially formed decomposed to ZrH₂ + ZrCo₂. On the other hand, ZrNi was more durable than ZrCo to the similar heat cycles. But, it was found that the absorption-desorption characteristics was degraded by heat cycles over 500. The X-ray analysis showed that ZrNi also disproportionated to ZrH₂ and ZrNi₃. The difference in the stabilities between the two materials appears to be due to the difference in crystallographic nature upon formation of the respective hydrides.

Original language	English
Pages (from-to)	1437-1442
Number of pages	6
Journal	Fusion Technology
Volume	28
Issue number	3 pt 2
DOIs	https://doi.org/10.13182/fst95-a30614
State	Published - 1995
Event	Proceedings of the 5th Topical Meeting on Tritium Technology in Fission, Fusion, and Isotopic Applications. Part 1 (of 2) - Belgirate, Italy Duration: 1995/05/28 → 1995/06/03

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General Engineering

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title = "Stability of ZrCo and ZrNi to heat cycles in hydrogen atmosphere",

abstract = "The stability of ZrNi and ZrCo to heat cycles in hydrogen atmosphere was studied through changes in absorption desorption characteristics and in crystallographic structures ZrCo easily lost its absorption- desorption capacity of hydrogen below 30 heat cycles between room temperature and a given temperature in a range of 400 approx.600 °C. X-ray diffraction analysis showed that ZrCoH3 initially formed decomposed to ZrH2 + ZrCo2. On the other hand, ZrNi was more durable than ZrCo to the similar heat cycles. But, it was found that the absorption-desorption characteristics was degraded by heat cycles over 500. The X-ray analysis showed that ZrNi also disproportionated to ZrH2 and ZrNi3. The difference in the stabilities between the two materials appears to be due to the difference in crystallographic nature upon formation of the respective hydrides.",

author = "Kuniaki Watanabe and Masanori Hara and Masao Matsuyama and Isao Kanesaka and Toshiki Kabutomori",

year = "1995",

doi = "10.13182/fst95-a30614",

language = "英語",

volume = "28",

pages = "1437--1442",

journal = "Fusion Technology",

issn = "0748-1896",

publisher = "American Nuclear Society",

number = "3 pt 2",

note = "Proceedings of the 5th Topical Meeting on Tritium Technology in Fission, Fusion, and Isotopic Applications. Part 1 (of 2) ; Conference date: 28-05-1995 Through 03-06-1995",

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TY - JOUR

T1 - Stability of ZrCo and ZrNi to heat cycles in hydrogen atmosphere

AU - Watanabe, Kuniaki

AU - Hara, Masanori

AU - Matsuyama, Masao

AU - Kanesaka, Isao

AU - Kabutomori, Toshiki

PY - 1995

Y1 - 1995

N2 - The stability of ZrNi and ZrCo to heat cycles in hydrogen atmosphere was studied through changes in absorption desorption characteristics and in crystallographic structures ZrCo easily lost its absorption- desorption capacity of hydrogen below 30 heat cycles between room temperature and a given temperature in a range of 400 approx.600 °C. X-ray diffraction analysis showed that ZrCoH3 initially formed decomposed to ZrH2 + ZrCo2. On the other hand, ZrNi was more durable than ZrCo to the similar heat cycles. But, it was found that the absorption-desorption characteristics was degraded by heat cycles over 500. The X-ray analysis showed that ZrNi also disproportionated to ZrH2 and ZrNi3. The difference in the stabilities between the two materials appears to be due to the difference in crystallographic nature upon formation of the respective hydrides.

AB - The stability of ZrNi and ZrCo to heat cycles in hydrogen atmosphere was studied through changes in absorption desorption characteristics and in crystallographic structures ZrCo easily lost its absorption- desorption capacity of hydrogen below 30 heat cycles between room temperature and a given temperature in a range of 400 approx.600 °C. X-ray diffraction analysis showed that ZrCoH3 initially formed decomposed to ZrH2 + ZrCo2. On the other hand, ZrNi was more durable than ZrCo to the similar heat cycles. But, it was found that the absorption-desorption characteristics was degraded by heat cycles over 500. The X-ray analysis showed that ZrNi also disproportionated to ZrH2 and ZrNi3. The difference in the stabilities between the two materials appears to be due to the difference in crystallographic nature upon formation of the respective hydrides.

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U2 - 10.13182/fst95-a30614

DO - 10.13182/fst95-a30614

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AN - SCOPUS:0029393053

SN - 0748-1896

VL - 28

SP - 1437

EP - 1442

JO - Fusion Technology

JF - Fusion Technology

IS - 3 pt 2

T2 - Proceedings of the 5th Topical Meeting on Tritium Technology in Fission, Fusion, and Isotopic Applications. Part 1 (of 2)

Y2 - 28 May 1995 through 3 June 1995

ER -

Stability of ZrCo and ZrNi to heat cycles in hydrogen atmosphere

Abstract

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