Phase Equilibria at 1373 K in the Ni-Rich Portion of Ni-Ti-Sb Ternary System

R. Kainuma; R. Umino; X. Xu; K. Han; T. Omori

doi:10.1007/s11669-020-00784-7

Phase Equilibria at 1373 K in the Ni-Rich Portion of Ni-Ti-Sb Ternary System

R. Kainuma, R. Umino, X. Xu, K. Han, T. Omori

ENG - Metallurgy

Tohoku University

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

Phase equilibria including L2₁ full- and C1_b half-Heusler phases at 1373 K in the Ni-rich portion of the Ni-Ti-Sb system were determined by electron probe microanalysis, x-ray diffraction and differential scanning calorimetry. It was confirmed that both Heusler phases coexist at 1373 K, separated by C1_b + L2₁ two-phase region. The single-phase region of the C1_b phase deviates slightly from the stoichiometric composition of NiTiSb to NiSb-rich direction. On the other hand, while existing in the vicinity of the stoichiometric composition of Ni₂TiSb, the L2₁ phase is not stable at temperatures below about 1270 K, disappearing by an eutectoid reaction, L2₁ → C1_b + Ni₃Ti-D0₂₄.

Original language	English
Pages (from-to)	116-122
Number of pages	7
Journal	Journal of Phase Equilibria and Diffusion
Volume	41
Issue number	2
DOIs	https://doi.org/10.1007/s11669-020-00784-7
Publication status	Published - 2020 Apr 1

Keywords

Ni-Ti-Sb
full Heusler
half Heusler
phase diagram

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title = "Phase Equilibria at 1373 K in the Ni-Rich Portion of Ni-Ti-Sb Ternary System",

abstract = "Phase equilibria including L21 full- and C1b half-Heusler phases at 1373 K in the Ni-rich portion of the Ni-Ti-Sb system were determined by electron probe microanalysis, x-ray diffraction and differential scanning calorimetry. It was confirmed that both Heusler phases coexist at 1373 K, separated by C1b + L21 two-phase region. The single-phase region of the C1b phase deviates slightly from the stoichiometric composition of NiTiSb to NiSb-rich direction. On the other hand, while existing in the vicinity of the stoichiometric composition of Ni2TiSb, the L21 phase is not stable at temperatures below about 1270 K, disappearing by an eutectoid reaction, L21 → C1b + Ni3Ti-D024.",

keywords = "Ni-Ti-Sb, full Heusler, half Heusler, phase diagram",

author = "R. Kainuma and R. Umino and X. Xu and K. Han and T. Omori",

note = "Funding Information: The authors acknowledge the support from JSPS KAKENHI Grant Number JP15H05766. Publisher Copyright: {\textcopyright} 2020, ASM International.",

year = "2020",

month = apr,

day = "1",

doi = "10.1007/s11669-020-00784-7",

language = "English",

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journal = "Journal of Phase Equilibria and Diffusion",

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TY - JOUR

T1 - Phase Equilibria at 1373 K in the Ni-Rich Portion of Ni-Ti-Sb Ternary System

AU - Kainuma, R.

AU - Umino, R.

AU - Xu, X.

AU - Han, K.

AU - Omori, T.

PY - 2020/4/1

Y1 - 2020/4/1

N2 - Phase equilibria including L21 full- and C1b half-Heusler phases at 1373 K in the Ni-rich portion of the Ni-Ti-Sb system were determined by electron probe microanalysis, x-ray diffraction and differential scanning calorimetry. It was confirmed that both Heusler phases coexist at 1373 K, separated by C1b + L21 two-phase region. The single-phase region of the C1b phase deviates slightly from the stoichiometric composition of NiTiSb to NiSb-rich direction. On the other hand, while existing in the vicinity of the stoichiometric composition of Ni2TiSb, the L21 phase is not stable at temperatures below about 1270 K, disappearing by an eutectoid reaction, L21 → C1b + Ni3Ti-D024.

AB - Phase equilibria including L21 full- and C1b half-Heusler phases at 1373 K in the Ni-rich portion of the Ni-Ti-Sb system were determined by electron probe microanalysis, x-ray diffraction and differential scanning calorimetry. It was confirmed that both Heusler phases coexist at 1373 K, separated by C1b + L21 two-phase region. The single-phase region of the C1b phase deviates slightly from the stoichiometric composition of NiTiSb to NiSb-rich direction. On the other hand, while existing in the vicinity of the stoichiometric composition of Ni2TiSb, the L21 phase is not stable at temperatures below about 1270 K, disappearing by an eutectoid reaction, L21 → C1b + Ni3Ti-D024.

KW - Ni-Ti-Sb

KW - full Heusler

KW - half Heusler

KW - phase diagram

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JO - Journal of Phase Equilibria and Diffusion

JF - Journal of Phase Equilibria and Diffusion

IS - 2

ER -

Phase Equilibria at 1373 K in the Ni-Rich Portion of Ni-Ti-Sb Ternary System

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Keywords

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