Investigation of the corrosion resistance of nickel-based alloys in fluoride melts
The results of tests of the compatibility of nickel-based alloys and metal-fluoride melts are generalized for molten-salt reactors. The structure and strength characteristics of the alloys Kh80MTYu, KhN80M-VI, and MONIKR in the initial state, after thermomechanical treatment and quenching, exposure...
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| Veröffentlicht in: | Atomic energy (New York, N.Y.) N.Y.), 2006-10, Vol.101 (4), p.730-738 |
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| creator | Ignat'ev, V V Surenkov, AI Gnidoi, I P Fedulov, VI Uglov, V S Panov, A V Sagaradze, V V Subbotin, V G Toropov, AD Afonichkin, V K Bove, AL |
| description | The results of tests of the compatibility of nickel-based alloys and metal-fluoride melts are generalized for molten-salt reactors. The structure and strength characteristics of the alloys Kh80MTYu, KhN80M-VI, and MONIKR in the initial state, after thermomechanical treatment and quenching, exposure for 1200 h to thermal convection loop filled with 58NaF-15LiF-27BeF sub(2) with heating by 100C, are investigated. A method for removing impurities from the melt has been developed. The results of corrosion tests performed on samples of nickel-based alloys in a setup with natural circulation with maximum melt temperature up to 700C and redox potential of the system 1.25-1.33 V relative to a beryllium comparison electrode are presented. It is shown that deep removal of oxidizing impurities from the melt and maintaining a low redox potential give slow uniform corrosion (less than 5 km/yr) of Kh80MTYu and KhN80M-VI samples. After the tests were completed, none of the alloys studied exhibited any tendency toward intercrystallite absorption. |
| doi_str_mv | 10.1007/s10512-006-0160-y |
| format | Article |
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The structure and strength characteristics of the alloys Kh80MTYu, KhN80M-VI, and MONIKR in the initial state, after thermomechanical treatment and quenching, exposure for 1200 h to thermal convection loop filled with 58NaF-15LiF-27BeF sub(2) with heating by 100C, are investigated. A method for removing impurities from the melt has been developed. The results of corrosion tests performed on samples of nickel-based alloys in a setup with natural circulation with maximum melt temperature up to 700C and redox potential of the system 1.25-1.33 V relative to a beryllium comparison electrode are presented. It is shown that deep removal of oxidizing impurities from the melt and maintaining a low redox potential give slow uniform corrosion (less than 5 km/yr) of Kh80MTYu and KhN80M-VI samples. After the tests were completed, none of the alloys studied exhibited any tendency toward intercrystallite absorption.</description><identifier>ISSN: 1063-4258</identifier><identifier>EISSN: 1573-8205</identifier><identifier>DOI: 10.1007/s10512-006-0160-y</identifier><language>eng</language><publisher>New York: Springer Nature B.V</publisher><subject>Alloys ; Beryllium ; Circulation ; Corrosion ; Corrosion tests ; Electrode potentials ; Electrodes ; Fluorides ; Heating ; Impurities ; Melts ; Nickel ; Nickel alloys ; Nickel base alloys ; Nuclear power generation ; Redox potential</subject><ispartof>Atomic energy (New York, N.Y.), 2006-10, Vol.101 (4), p.730-738</ispartof><rights>Springer Science+Business Media, Inc. 2006</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c337t-7a511961b7c58f7b3d0fd707fd98fe63a63a799fa28cb76b6a839219e1ef6c1a3</citedby><cites>FETCH-LOGICAL-c337t-7a511961b7c58f7b3d0fd707fd98fe63a63a799fa28cb76b6a839219e1ef6c1a3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,27901,27902</link.rule.ids></links><search><creatorcontrib>Ignat'ev, V V</creatorcontrib><creatorcontrib>Surenkov, AI</creatorcontrib><creatorcontrib>Gnidoi, I P</creatorcontrib><creatorcontrib>Fedulov, VI</creatorcontrib><creatorcontrib>Uglov, V S</creatorcontrib><creatorcontrib>Panov, A V</creatorcontrib><creatorcontrib>Sagaradze, V V</creatorcontrib><creatorcontrib>Subbotin, V G</creatorcontrib><creatorcontrib>Toropov, AD</creatorcontrib><creatorcontrib>Afonichkin, V K</creatorcontrib><creatorcontrib>Bove, AL</creatorcontrib><title>Investigation of the corrosion resistance of nickel-based alloys in fluoride melts</title><title>Atomic energy (New York, N.Y.)</title><description>The results of tests of the compatibility of nickel-based alloys and metal-fluoride melts are generalized for molten-salt reactors. The structure and strength characteristics of the alloys Kh80MTYu, KhN80M-VI, and MONIKR in the initial state, after thermomechanical treatment and quenching, exposure for 1200 h to thermal convection loop filled with 58NaF-15LiF-27BeF sub(2) with heating by 100C, are investigated. A method for removing impurities from the melt has been developed. The results of corrosion tests performed on samples of nickel-based alloys in a setup with natural circulation with maximum melt temperature up to 700C and redox potential of the system 1.25-1.33 V relative to a beryllium comparison electrode are presented. It is shown that deep removal of oxidizing impurities from the melt and maintaining a low redox potential give slow uniform corrosion (less than 5 km/yr) of Kh80MTYu and KhN80M-VI samples. 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The structure and strength characteristics of the alloys Kh80MTYu, KhN80M-VI, and MONIKR in the initial state, after thermomechanical treatment and quenching, exposure for 1200 h to thermal convection loop filled with 58NaF-15LiF-27BeF sub(2) with heating by 100C, are investigated. A method for removing impurities from the melt has been developed. The results of corrosion tests performed on samples of nickel-based alloys in a setup with natural circulation with maximum melt temperature up to 700C and redox potential of the system 1.25-1.33 V relative to a beryllium comparison electrode are presented. It is shown that deep removal of oxidizing impurities from the melt and maintaining a low redox potential give slow uniform corrosion (less than 5 km/yr) of Kh80MTYu and KhN80M-VI samples. 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| subjects | Alloys Beryllium Circulation Corrosion Corrosion tests Electrode potentials Electrodes Fluorides Heating Impurities Melts Nickel Nickel alloys Nickel base alloys Nuclear power generation Redox potential |
| title | Investigation of the corrosion resistance of nickel-based alloys in fluoride melts |
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