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Rare-Earth-Rich Alloys; Alliages a Teneur Elevee en Terres Rares; Splavy, obogashchennye redkozemel'nymi ehlementami; Aleaciones Ricas en Tierras Raras

Abstract

The rare earth metals with high thermal-neutron capture cross-sections are of interest for control of power-producing reactors; however, they are susceptible to corrosion. On the premise that non-rare earth metals may be alloyed with dysprosium, erbium, gadolinium and samarium, thus improving their properties, the effects of selected alloying additions on the rare earths were studied. The solubilities of the non-rare earth metals, zirconium, vanadium, chromium, iron, nickel, copper, aluminium and silicon, in dysprosium, erbium, gadolinium and samarium and their effects on the melting points, solid state transformations and corrosion properties were studied. -Phase diagrams were prepared up to the first rare earth-rich compound or eutectic, whichever occurred first. On completion of that portion of the work, alloys were made, heat-treated to yield maximum solid solubility of the non-rare earth alloying addition, and oxidation- and corrosion-tested. No improvement of the rare earth metals to oxidation resistance in the atmosphere was observed on alloying; in fact, most additions proved to be deleterious. Aluminium greatly improved the hot-Water corrosion resistance of the rare earths tested; other non-rare earth metal additions improved the resistance to a lesser degree. (author) [French] Les terres rares possedent une section efficace de capture des neutrons thermiques elevee; ces  More>>
Authors:
Copeland, M.; Kato, H. [1] 
  1. Albany Metallurgy Research Center, Bureau of Mines, United States Department of the Interior, Albany, OR (United States)
Publication Date:
Jun 15, 1964
Product Type:
Conference
Report Number:
IAEA-SM-46/18
Resource Relation:
Conference: Symposium on Physics and Material Problems of Reactor Control Rods, Vienna (Austria), 11-15 Nov 1963; Other Information: 7 refs., 8 figs., 5 tabs.; Related Information: In: Physics and Material Problems of Reactor Control Rods. Proceedings of the Symposium on Physics and Material Problems of Reactor Control Rods| 808 p.
Subject:
36 MATERIALS SCIENCE; ALUMINIUM; CAPTURE; CHROMIUM; COPPER; CORROSION; CORROSION RESISTANCE; CROSS SECTIONS; DYSPROSIUM; ERBIUM; GADOLINIUM; HEAT TREATMENTS; IRON; MELTING POINTS; NICKEL; RARE EARTH ALLOYS; SAMARIUM; SOLUBILITY; THERMAL NEUTRONS; VANADIUM; ZIRCONIUM
OSTI ID:
22127605
Research Organizations:
International Atomic Energy Agency, Vienna (Austria)
Country of Origin:
IAEA
Language:
English
Other Identifying Numbers:
Other: ISSN 0074-1884; TRN: XA13M3018082684
Submitting Site:
INIS
Size:
page(s) 295-316
Announcement Date:
Sep 12, 2013

Citation Formats

Copeland, M., and Kato, H. Rare-Earth-Rich Alloys; Alliages a Teneur Elevee en Terres Rares; Splavy, obogashchennye redkozemel'nymi ehlementami; Aleaciones Ricas en Tierras Raras. IAEA: N. p., 1964. Web.
Copeland, M., & Kato, H. Rare-Earth-Rich Alloys; Alliages a Teneur Elevee en Terres Rares; Splavy, obogashchennye redkozemel'nymi ehlementami; Aleaciones Ricas en Tierras Raras. IAEA.
Copeland, M., and Kato, H. 1964. "Rare-Earth-Rich Alloys; Alliages a Teneur Elevee en Terres Rares; Splavy, obogashchennye redkozemel'nymi ehlementami; Aleaciones Ricas en Tierras Raras." IAEA.
@misc{etde_22127605,
title = {Rare-Earth-Rich Alloys; Alliages a Teneur Elevee en Terres Rares; Splavy, obogashchennye redkozemel'nymi ehlementami; Aleaciones Ricas en Tierras Raras}
author = {Copeland, M., and Kato, H.}
abstractNote = {The rare earth metals with high thermal-neutron capture cross-sections are of interest for control of power-producing reactors; however, they are susceptible to corrosion. On the premise that non-rare earth metals may be alloyed with dysprosium, erbium, gadolinium and samarium, thus improving their properties, the effects of selected alloying additions on the rare earths were studied. The solubilities of the non-rare earth metals, zirconium, vanadium, chromium, iron, nickel, copper, aluminium and silicon, in dysprosium, erbium, gadolinium and samarium and their effects on the melting points, solid state transformations and corrosion properties were studied. -Phase diagrams were prepared up to the first rare earth-rich compound or eutectic, whichever occurred first. On completion of that portion of the work, alloys were made, heat-treated to yield maximum solid solubility of the non-rare earth alloying addition, and oxidation- and corrosion-tested. No improvement of the rare earth metals to oxidation resistance in the atmosphere was observed on alloying; in fact, most additions proved to be deleterious. Aluminium greatly improved the hot-Water corrosion resistance of the rare earths tested; other non-rare earth metal additions improved the resistance to a lesser degree. (author) [French] Les terres rares possedent une section efficace de capture des neutrons thermiques elevee; ces metaux presentent un grand interet pour le controle des reacteurs de puissance; toutefois, ils sont attaques par corrosion. En.partant de l'idee qu'il est possible d'allier des metaux autres que les terres rares avec le dysprosium, l 'erbium, le gadolinium et le samarium, et d'ameliorer ainsi leurs proprietes, les auteurs .ont observe les effets de l 'addition de certains metaux sur les terres rares. Ils ont etudie les solubilites du zirconium, du vanadium, du chrome; du fer, du nickel, du cuivre, de l'aluminium et du silicium dans le dysprosium, l'erbium, le gadolinium et le samarium ainsi que leurs effets sur les points de fusion, les transformations de l'etat solide et la resistance a la corrosion. Ils ont etabli des diagrammes de phases jusqu'au premier compose ou entectique a teneur elevee en terres rares, selon que l'un ou l'autre apparaissait le premier. Une fois cette partie des travaux termines, ils ont fabrique des alliages qu'ils ont traites a chaud pour obtenir le maximum de solubilite a l'etat solide du metal d'alliage qui n'est pas une terre rare,, et ils ont fait des essais d'oxydation et de corrosion. Ils n'ont observe aucune amelioration de la resistance des terres rares a l 'oxydation dans l 'atmosphere a la suite de l 'operation; en fait, la plupart des metaux d'addition se sont reveles nuisibles. L'aluminium augmentait fortement la resistance a la corrosion par l'eau chaude des terres rares ayant fait l'objet des essais; d'autres metaux n'augmentaient cette resistance des terres rares qu'a un moindre degre. (author) [Spanish] Los metales de las tierras raras presentan interes en el control de reactores de potencia debido a su elevada seccion eficaz de captura de neutrones termicos, pero por desgracia se corroen con facilidad. Partiendo del supuesto de que ciertos metales no pertenecientes al grupo de las tierras raras pueden alearse con disprosio, erbio, gadolinio y samario mejorando sus propiedades, los autores estudiaron los efectos que esta aleacion ejerce sobre las tierras raras. Estudiaron la solubilidad de metales como el circonio, vanadio, cromo, hierro, niquel, cobre, aluminio y silicio en disprosio, erbio, gadolinio y samario, y determinaron sus efectos sobre los respectivos puntos de fusion, las transformaciones de estado solido y la resistencia a la corrosion. Prepararon diagramas de fase hasta el primer compuesto rico en tierra rara o hasta el eutectico, segun cual apareciera primero. A l terminar esta parte del trabajo, prepararon aleaciones, que sometieron a un tratamiento termico para obtener un maximo de solubilidad solida del metal aleado con la tierra rara y estudiaron la oxidacion y la corrosion. Los autores no observaron ningun aumento de la resistencia a la oxidacion en la atmosfera que pudiera atribuirse a la aleacion; es mas, la mayor parte de las adiciones ejercieron efectos nocivos. El aluminio mejoro notablemente la resistencia a la corrosion en agua caliente de las tierras raras sometidas a ensayo; la adicion de otros metales no pertenecientes al grupo de las tierras raras tambien aumento esa resistencia, pero en menor grado. (author) [Russian] Redkozemel'nye metally s vysokim secheniem zahvata teplovyh nejtronov predstavljajut interes dlja upravlenija reaktorami, proizvodjashhimi jelektrojenergiju; odnako oni podverzheny korrozii. I s hodja iz toj predposylki, chto neredkozemel'nye metally mogut byt' splavleny s disproziem, orbiem, gadoliniem i samariem i mogut uluchshit' ih svojstva, izucheny vlijanija redkozemel'nyh metallov opredelennyh dobavok ih na splavy. Izuchena rastvorimost' n e redkozemel'nyh metallov cirkonija, vanadija, hroma, zheleza, nikelja, medi, aljuminija i kremnija v disprozii, jerbii, gadolinii i samarii, a takzhe ih vlijanie na tochki plavlenija, preobrazovanie v tverdoe telo i korrozijnye svojstva. Podgotovleny diagrammy faz vplot' do pervyh soedinenij, obogashhennyh redkozemel'nymi jelementami ili jevtetik, kotorye voznikli vpervye. Po zavershenii jetoj chasti raboty byli sozdany splavy, obrabotany pri vysokoj temperature s cel'ju poluchenija maksimal'noj rastvorimosti tverdyh neredkozemel'nyh jelementov, dobavljaemyh dlja splava, i byli provedeny ispytanija na okislenie i korroziju. Pri splavlenii ne nabljudalos' uluchshenija redkozemel'nyh metallov v otnoshenii stojkosti k okisleniju na vozduhe, i fakticheski v bol'shinstve dobavki okazalis' vrednymi. Aljuminij v znachitel'noj stepeni uluchshil soprotivljaemost' k korrozii ot gorjachej vody v aprobirovannyh redkozemel'nyh jelementah; drugie neredkozemel'nye metally pri dobavkah uluchshili takuju soprotivljaemost' v men'shej stepeni. (author)}
place = {IAEA}
year = {1964}
month = {Jun}
}