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Phase equilibria at 1150°C in the Co-rich alloys SmCoZr and structure of the 1:7 phase

Identifieur interne : 000F88 ( Main/Curation ); précédent : 000F87; suivant : 000F89

Phase equilibria at 1150°C in the Co-rich alloys SmCoZr and structure of the 1:7 phase

Auteurs : S. Derkaoui [Maroc] ; N. Valignat [France] ; C. H. Allibert [France]

Source :

RBID : ISTEX:9A0CEE272A3FCD527AEE28AF8EDA55AC2B484B93

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English descriptors

Abstract

In the concentration range 75–100 at.% Co, the isothermal section at 1150°C of the system SmCoZr is determined experimentally. The following features are evidenced: a very small Sm solubility in Co, Zr2Co11, and Zr6Co23, an extended Zr for Sm substitution rate in SmCo3, Sm2Co7 and Sm5Co19, and a significant Zr solubility in SmCo5 and Sm2Co17 that induces the existence of a continuous ternary single phase 1:7. On the basis of the lattice parameter data, the formation of this phase by the substitution of Co dumbbells and/or Sm atoms for Zr atoms is proposed.

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DOI: 10.1016/0925-8388(95)02003-9

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ISTEX:9A0CEE272A3FCD527AEE28AF8EDA55AC2B484B93

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<div type="abstract" xml:lang="en">Copyright (c) 1996 Elsevier Science B.V. All rights reserved. In the concentration range 75-100at.%Co, the isothermal section at 1150°C of the system Sm-Co-Zr is determined experimentally. The following features are evidenced: a very small Sm solubility in Co, Zr
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, Sm
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Co
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Co
<sub>17</sub>
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<div type="abstract" xml:lang="en">In the concentration range 75–100 at.% Co, the isothermal section at 1150°C of the system SmCoZr is determined experimentally. The following features are evidenced: a very small Sm solubility in Co, Zr2Co11, and Zr6Co23, an extended Zr for Sm substitution rate in SmCo3, Sm2Co7 and Sm5Co19, and a significant Zr solubility in SmCo5 and Sm2Co17 that induces the existence of a continuous ternary single phase 1:7. On the basis of the lattice parameter data, the formation of this phase by the substitution of Co dumbbells and/or Sm atoms for Zr atoms is proposed.</div>
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   |type=    RBID
   |clé=     ISTEX:9A0CEE272A3FCD527AEE28AF8EDA55AC2B484B93
   |texte=   Phase equilibria at 1150°C in the Co-rich alloys SmCoZr and structure of the 1:7 phase
}}

Wicri

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