Hot corrosion behavior of (Nb-Ti)1-x-ySixCry alloy thin film on Nb-Si based superalloy: Experimental study and first-principles calculation

Pei Yuwen; Zheng Chen; Fangfang Wang; Chungen Zhou

doi:10.1016/j.ceramint.2025.03.126

Hot corrosion behavior of (Nb-Ti)_1-x-ySi_xCr_y alloy thin film on Nb-Si based superalloy: Experimental study and first-principles calculation

Pei Yuwen
, Zheng Chen
, Fangfang Wang^*
, Chungen Zhou^*

^*Corresponding author for this work

School of Materials Science and Engineering

Beihang University

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

1 Scopus citations

Abstract

Three targets magnetron sputter co-deposition method was adopted to prepare (Nb-Ti)_1-x-ySi_xCr_y composition spread alloy film. Early hot corrosion behavior of the as-deposited alloy thin film with a mixture of Na₂SO₄+NaCl salt was investigated at 950 °C for 50 min. Three regions of distinct oxidation behavior can be observed. Region 1 with the composition of Nb-(10–16) Ti-(25–41) Si-(14–20) Cr (at. %) is mainly consisted of SiO₂+CrNbO₄ and has best oxidation resistance. The reason for that is higher diffusion energy barriers of oxygen in CrNbO₄ and SiO₂.

Original language	English
Pages (from-to)	24429-24440
Number of pages	12
Journal	Ceramics International
Volume	51
Issue number	18
DOIs	https://doi.org/10.1016/j.ceramint.2025.03.126
State	Published - Jul 2025

Keywords

Diffusion energy barrier
First-principles
Hot corrosion
Magnetron sputter
Protective scale

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10.1016/j.ceramint.2025.03.126

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@article{667e9f682d1841d293da30acf81de01c,

title = "Hot corrosion behavior of (Nb-Ti)1-x-ySixCry alloy thin film on Nb-Si based superalloy: Experimental study and first-principles calculation",

abstract = "Three targets magnetron sputter co-deposition method was adopted to prepare (Nb-Ti)1-x-ySixCry composition spread alloy film. Early hot corrosion behavior of the as-deposited alloy thin film with a mixture of Na2SO4+NaCl salt was investigated at 950 °C for 50 min. Three regions of distinct oxidation behavior can be observed. Region 1 with the composition of Nb-(10–16) Ti-(25–41) Si-(14–20) Cr (at. \%) is mainly consisted of SiO2+CrNbO4 and has best oxidation resistance. The reason for that is higher diffusion energy barriers of oxygen in CrNbO4 and SiO2.",

keywords = "Diffusion energy barrier, First-principles, Hot corrosion, Magnetron sputter, Protective scale",

author = "Pei Yuwen and Zheng Chen and Fangfang Wang and Chungen Zhou",

note = "Publisher Copyright: {\textcopyright} 2025 Elsevier Ltd and Techna Group S.r.l.",

year = "2025",

month = jul,

doi = "10.1016/j.ceramint.2025.03.126",

language = "英语",

volume = "51",

pages = "24429--24440",

journal = "Ceramics International",

issn = "0272-8842",

publisher = "Elsevier Ltd",

number = "18",

}

TY - JOUR

T1 - Hot corrosion behavior of (Nb-Ti)1-x-ySixCry alloy thin film on Nb-Si based superalloy

T2 - Experimental study and first-principles calculation

AU - Yuwen, Pei

AU - Chen, Zheng

AU - Wang, Fangfang

AU - Zhou, Chungen

PY - 2025/7

Y1 - 2025/7

N2 - Three targets magnetron sputter co-deposition method was adopted to prepare (Nb-Ti)1-x-ySixCry composition spread alloy film. Early hot corrosion behavior of the as-deposited alloy thin film with a mixture of Na2SO4+NaCl salt was investigated at 950 °C for 50 min. Three regions of distinct oxidation behavior can be observed. Region 1 with the composition of Nb-(10–16) Ti-(25–41) Si-(14–20) Cr (at. %) is mainly consisted of SiO2+CrNbO4 and has best oxidation resistance. The reason for that is higher diffusion energy barriers of oxygen in CrNbO4 and SiO2.

AB - Three targets magnetron sputter co-deposition method was adopted to prepare (Nb-Ti)1-x-ySixCry composition spread alloy film. Early hot corrosion behavior of the as-deposited alloy thin film with a mixture of Na2SO4+NaCl salt was investigated at 950 °C for 50 min. Three regions of distinct oxidation behavior can be observed. Region 1 with the composition of Nb-(10–16) Ti-(25–41) Si-(14–20) Cr (at. %) is mainly consisted of SiO2+CrNbO4 and has best oxidation resistance. The reason for that is higher diffusion energy barriers of oxygen in CrNbO4 and SiO2.

KW - Diffusion energy barrier

KW - First-principles

KW - Hot corrosion

KW - Magnetron sputter

KW - Protective scale

UR - https://www.scopus.com/pages/publications/105002674707

U2 - 10.1016/j.ceramint.2025.03.126

DO - 10.1016/j.ceramint.2025.03.126

M3 - 文章

AN - SCOPUS:105002674707

SN - 0272-8842

VL - 51

SP - 24429

EP - 24440

JO - Ceramics International

JF - Ceramics International

IS - 18

ER -

Hot corrosion behavior of (Nb-Ti)_1-x-ySi_xCr_y alloy thin film on Nb-Si based superalloy: Experimental study and first-principles calculation

Abstract

Keywords

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