Experimental investigation and thermodynamic assessment of phase equilibria in the Nb-Si-Zr ternary system

J. Li; Y. H. Guo; S. Y. Yang; Z. Shi; C. P. Wang; X. J. Liu

doi:10.1016/j.jallcom.2015.01.204

Experimental investigation and thermodynamic assessment of phase equilibria in the Nb-Si-Zr ternary system

J. Li
, Y. H. Guo
, S. Y. Yang
, Z. Shi
, C. P. Wang
, X. J. Liu^*

^*Corresponding author for this work

Xiamen University

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

22 Scopus citations

Abstract

In this study, the phase equilibria of Nb-Si-Zr at 1373 K, 1473 K and 1573 K were experimentally determined by means of back-scattered electron (BSE), electron probe microanalysis (EPMA) and X-ray diffraction (XRD). The results show that there were five three-phase regions and sixteen two-phase regions in the studied isothermal sections, and no any ternary compounds were found. The solubility of Si in the Nb-Zr side is very small. Large solubilities of Nb in αZr₅Si₄, Zr₃Si₂ and Zr₂Si phases were observed, otherwise the solubilities of Nb in ZrSi₂, αZrSi and Zr₃Si phases are relatively small. Based on the present experimental results, the thermodynamic assessment of Nb-Si-Zr system was carried out using the CALPHAD (Calculation of Phase Diagrams) method. The current calculated phase diagrams are in reasonable agreement with the present experimental data.

Original language	English
Pages (from-to)	216-224
Number of pages	9
Journal	Journal of Alloys and Compounds
Volume	642
DOIs	https://doi.org/10.1016/j.jallcom.2015.01.204
State	Published - 5 Sep 2015
Externally published	Yes

Keywords

CALPHAD
Nb-Si-Zr
Phase diagram
Thermodynamic assessment

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10.1016/j.jallcom.2015.01.204

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@article{07858a8553d14f999885b60556e7d3b9,

title = "Experimental investigation and thermodynamic assessment of phase equilibria in the Nb-Si-Zr ternary system",

abstract = "In this study, the phase equilibria of Nb-Si-Zr at 1373 K, 1473 K and 1573 K were experimentally determined by means of back-scattered electron (BSE), electron probe microanalysis (EPMA) and X-ray diffraction (XRD). The results show that there were five three-phase regions and sixteen two-phase regions in the studied isothermal sections, and no any ternary compounds were found. The solubility of Si in the Nb-Zr side is very small. Large solubilities of Nb in αZr5Si4, Zr3Si2 and Zr2Si phases were observed, otherwise the solubilities of Nb in ZrSi2, αZrSi and Zr3Si phases are relatively small. Based on the present experimental results, the thermodynamic assessment of Nb-Si-Zr system was carried out using the CALPHAD (Calculation of Phase Diagrams) method. The current calculated phase diagrams are in reasonable agreement with the present experimental data.",

keywords = "CALPHAD, Nb-Si-Zr, Phase diagram, Thermodynamic assessment",

author = "J. Li and Guo, \{Y. H.\} and Yang, \{S. Y.\} and Z. Shi and Wang, \{C. P.\} and Liu, \{X. J.\}",

year = "2015",

month = sep,

day = "5",

doi = "10.1016/j.jallcom.2015.01.204",

language = "英语",

volume = "642",

pages = "216--224",

journal = "Journal of Alloys and Compounds",

issn = "0925-8388",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Experimental investigation and thermodynamic assessment of phase equilibria in the Nb-Si-Zr ternary system

AU - Li, J.

AU - Guo, Y. H.

AU - Yang, S. Y.

AU - Shi, Z.

AU - Wang, C. P.

AU - Liu, X. J.

PY - 2015/9/5

Y1 - 2015/9/5

N2 - In this study, the phase equilibria of Nb-Si-Zr at 1373 K, 1473 K and 1573 K were experimentally determined by means of back-scattered electron (BSE), electron probe microanalysis (EPMA) and X-ray diffraction (XRD). The results show that there were five three-phase regions and sixteen two-phase regions in the studied isothermal sections, and no any ternary compounds were found. The solubility of Si in the Nb-Zr side is very small. Large solubilities of Nb in αZr5Si4, Zr3Si2 and Zr2Si phases were observed, otherwise the solubilities of Nb in ZrSi2, αZrSi and Zr3Si phases are relatively small. Based on the present experimental results, the thermodynamic assessment of Nb-Si-Zr system was carried out using the CALPHAD (Calculation of Phase Diagrams) method. The current calculated phase diagrams are in reasonable agreement with the present experimental data.

AB - In this study, the phase equilibria of Nb-Si-Zr at 1373 K, 1473 K and 1573 K were experimentally determined by means of back-scattered electron (BSE), electron probe microanalysis (EPMA) and X-ray diffraction (XRD). The results show that there were five three-phase regions and sixteen two-phase regions in the studied isothermal sections, and no any ternary compounds were found. The solubility of Si in the Nb-Zr side is very small. Large solubilities of Nb in αZr5Si4, Zr3Si2 and Zr2Si phases were observed, otherwise the solubilities of Nb in ZrSi2, αZrSi and Zr3Si phases are relatively small. Based on the present experimental results, the thermodynamic assessment of Nb-Si-Zr system was carried out using the CALPHAD (Calculation of Phase Diagrams) method. The current calculated phase diagrams are in reasonable agreement with the present experimental data.

KW - CALPHAD

KW - Nb-Si-Zr

KW - Phase diagram

KW - Thermodynamic assessment

UR - https://www.scopus.com/pages/publications/84928717410

U2 - 10.1016/j.jallcom.2015.01.204

DO - 10.1016/j.jallcom.2015.01.204

M3 - 文章

AN - SCOPUS:84928717410

SN - 0925-8388

VL - 642

SP - 216

EP - 224

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

ER -

Experimental investigation and thermodynamic assessment of phase equilibria in the Nb-Si-Zr ternary system

Abstract

Keywords

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