Microstructure characteristics and oxidation behavior of a dense Si-Cr-Fe-Ti coating with a multi-layer structure on Nb-Si based alloy by slurry sintering

Weiping Zhang; Yanqiang Qiao; Xiping Guo; Longfei Li; Xi Nan

doi:10.1016/j.corsci.2025.112743

Microstructure characteristics and oxidation behavior of a dense Si-Cr-Fe-Ti coating with a multi-layer structure on Nb-Si based alloy by slurry sintering

Weiping Zhang, Yanqiang Qiao, Xiping Guo, Longfei Li, Xi Nan

School of Materials Sience and Engineering

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

2 Scopus citations

Abstract

A dense and multilayered Si-Cr-Fe-Ti coating was prepared on Nb-Si based alloy by slurry sintering. The oxidation behavior of the coating at 1250, 1350 and 1450 ℃ were systematically investigated. The coating exhibits good oxidation resistance at high temperatures, forming dense and multi-layer scales after oxidation at 1250 ℃∼1350 ℃, while forming a dense glassy silica scale at 1450 ℃. The addition of a certain amount of Ti and Fe is beneficial for the formation and stability of the Cr₂TiO₅ middle layer, thus effectively inhibiting the further oxidation of Cr₂O₃ to volatile CrO₃.

Original language	English
Article number	112743
Journal	Corrosion Science
Volume	246
DOIs	https://doi.org/10.1016/j.corsci.2025.112743
State	Published - 15 Apr 2025

Keywords

Nb-Si based alloy
Oxidation
Silicide coating
Slurry sintering

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10.1016/j.corsci.2025.112743

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title = "Microstructure characteristics and oxidation behavior of a dense Si-Cr-Fe-Ti coating with a multi-layer structure on Nb-Si based alloy by slurry sintering",

abstract = "A dense and multilayered Si-Cr-Fe-Ti coating was prepared on Nb-Si based alloy by slurry sintering. The oxidation behavior of the coating at 1250, 1350 and 1450 ℃ were systematically investigated. The coating exhibits good oxidation resistance at high temperatures, forming dense and multi-layer scales after oxidation at 1250 ℃∼1350 ℃, while forming a dense glassy silica scale at 1450 ℃. The addition of a certain amount of Ti and Fe is beneficial for the formation and stability of the Cr2TiO5 middle layer, thus effectively inhibiting the further oxidation of Cr2O3 to volatile CrO3.",

keywords = "Nb-Si based alloy, Oxidation, Silicide coating, Slurry sintering",

author = "Weiping Zhang and Yanqiang Qiao and Xiping Guo and Longfei Li and Xi Nan",

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doi = "10.1016/j.corsci.2025.112743",

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TY - JOUR

T1 - Microstructure characteristics and oxidation behavior of a dense Si-Cr-Fe-Ti coating with a multi-layer structure on Nb-Si based alloy by slurry sintering

AU - Zhang, Weiping

AU - Qiao, Yanqiang

AU - Guo, Xiping

AU - Li, Longfei

AU - Nan, Xi

PY - 2025/4/15

Y1 - 2025/4/15

N2 - A dense and multilayered Si-Cr-Fe-Ti coating was prepared on Nb-Si based alloy by slurry sintering. The oxidation behavior of the coating at 1250, 1350 and 1450 ℃ were systematically investigated. The coating exhibits good oxidation resistance at high temperatures, forming dense and multi-layer scales after oxidation at 1250 ℃∼1350 ℃, while forming a dense glassy silica scale at 1450 ℃. The addition of a certain amount of Ti and Fe is beneficial for the formation and stability of the Cr2TiO5 middle layer, thus effectively inhibiting the further oxidation of Cr2O3 to volatile CrO3.

AB - A dense and multilayered Si-Cr-Fe-Ti coating was prepared on Nb-Si based alloy by slurry sintering. The oxidation behavior of the coating at 1250, 1350 and 1450 ℃ were systematically investigated. The coating exhibits good oxidation resistance at high temperatures, forming dense and multi-layer scales after oxidation at 1250 ℃∼1350 ℃, while forming a dense glassy silica scale at 1450 ℃. The addition of a certain amount of Ti and Fe is beneficial for the formation and stability of the Cr2TiO5 middle layer, thus effectively inhibiting the further oxidation of Cr2O3 to volatile CrO3.

KW - Nb-Si based alloy

KW - Oxidation

KW - Silicide coating

KW - Slurry sintering

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U2 - 10.1016/j.corsci.2025.112743

DO - 10.1016/j.corsci.2025.112743

M3 - 文章

AN - SCOPUS:85216512185

SN - 0010-938X

VL - 246

JO - Corrosion Science

JF - Corrosion Science

M1 - 112743

ER -

Microstructure characteristics and oxidation behavior of a dense Si-Cr-Fe-Ti coating with a multi-layer structure on Nb-Si based alloy by slurry sintering

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Keywords

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