Microstructure evolution and hot corrosion behavior of Zr-Y modified silicide coating prepared by two-step process

Jiahua He; Xiping Guo; Yanqiang Qiao

doi:10.1016/j.corsci.2019.05.010

Microstructure evolution and hot corrosion behavior of Zr-Y modified silicide coating prepared by two-step process

Jiahua He
, Xiping Guo
, Yanqiang Qiao

School of Materials Sience and Engineering

Northwestern Polytechnical University Xian

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

22 Scopus citations

Abstract

Zr-Y modified silicide coating on the Nb-Si based ultrahigh temperature alloy is prepared by firstly magnetron sputtering Ti-5Al-10Nb-2Zr (at.%) alloy film and then Si-Y co-deposition. The coating is mainly composed of a TiSi₂ outer layer, a relatively thick (Nb,X) Si₂ inner layer and a thin transitional layer. The mass gain of the bare alloy, simple Si-Y coating and two-step coating is 97, 7.3 and 4.1 mg/cm² respectively after hot corrosion at 900 °C for 100 h in Na₂SO₄+NaCl molten salts. The hot corrosion mechanism of the coating has been revealed.

Original language	English
Pages (from-to)	44-57
Number of pages	14
Journal	Corrosion Science
Volume	156
DOIs	https://doi.org/10.1016/j.corsci.2019.05.010
State	Published - 1 Aug 2019

Keywords

A. Metal coatings
A. Molten salts
B. EPMA
C. Hot corrosion

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10.1016/j.corsci.2019.05.010

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title = "Microstructure evolution and hot corrosion behavior of Zr-Y modified silicide coating prepared by two-step process",

abstract = "Zr-Y modified silicide coating on the Nb-Si based ultrahigh temperature alloy is prepared by firstly magnetron sputtering Ti-5Al-10Nb-2Zr (at.\%) alloy film and then Si-Y co-deposition. The coating is mainly composed of a TiSi2 outer layer, a relatively thick (Nb,X) Si2 inner layer and a thin transitional layer. The mass gain of the bare alloy, simple Si-Y coating and two-step coating is 97, 7.3 and 4.1 mg/cm2 respectively after hot corrosion at 900 °C for 100 h in Na2SO4+NaCl molten salts. The hot corrosion mechanism of the coating has been revealed.",

keywords = "A. Metal coatings, A. Molten salts, B. EPMA, C. Hot corrosion",

author = "Jiahua He and Xiping Guo and Yanqiang Qiao",

note = "Publisher Copyright: {\textcopyright} 2019 Elsevier Ltd",

year = "2019",

month = aug,

day = "1",

doi = "10.1016/j.corsci.2019.05.010",

language = "英语",

volume = "156",

pages = "44--57",

journal = "Corrosion Science",

issn = "0010-938X",

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TY - JOUR

T1 - Microstructure evolution and hot corrosion behavior of Zr-Y modified silicide coating prepared by two-step process

AU - He, Jiahua

AU - Guo, Xiping

AU - Qiao, Yanqiang

PY - 2019/8/1

Y1 - 2019/8/1

N2 - Zr-Y modified silicide coating on the Nb-Si based ultrahigh temperature alloy is prepared by firstly magnetron sputtering Ti-5Al-10Nb-2Zr (at.%) alloy film and then Si-Y co-deposition. The coating is mainly composed of a TiSi2 outer layer, a relatively thick (Nb,X) Si2 inner layer and a thin transitional layer. The mass gain of the bare alloy, simple Si-Y coating and two-step coating is 97, 7.3 and 4.1 mg/cm2 respectively after hot corrosion at 900 °C for 100 h in Na2SO4+NaCl molten salts. The hot corrosion mechanism of the coating has been revealed.

AB - Zr-Y modified silicide coating on the Nb-Si based ultrahigh temperature alloy is prepared by firstly magnetron sputtering Ti-5Al-10Nb-2Zr (at.%) alloy film and then Si-Y co-deposition. The coating is mainly composed of a TiSi2 outer layer, a relatively thick (Nb,X) Si2 inner layer and a thin transitional layer. The mass gain of the bare alloy, simple Si-Y coating and two-step coating is 97, 7.3 and 4.1 mg/cm2 respectively after hot corrosion at 900 °C for 100 h in Na2SO4+NaCl molten salts. The hot corrosion mechanism of the coating has been revealed.

KW - A. Metal coatings

KW - A. Molten salts

KW - B. EPMA

KW - C. Hot corrosion

UR - https://www.scopus.com/pages/publications/85065892525

U2 - 10.1016/j.corsci.2019.05.010

DO - 10.1016/j.corsci.2019.05.010

M3 - 文章

AN - SCOPUS:85065892525

SN - 0010-938X

VL - 156

SP - 44

EP - 57

JO - Corrosion Science

JF - Corrosion Science

ER -

Microstructure evolution and hot corrosion behavior of Zr-Y modified silicide coating prepared by two-step process

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Keywords

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