The high temperature wetting and corrosion mechanism analysis of Nb by TiAl alloy melt

Xianjun Lei; Xiaopeng Wang; Fantao Kong; Yuyong Chen

doi:10.1016/j.corsci.2021.109316

The high temperature wetting and corrosion mechanism analysis of Nb by TiAl alloy melt

Xianjun Lei
, Xiaopeng Wang
, Fantao Kong^*
, Yuyong Chen

^*Corresponding author for this work

School of Materials Science and Engineering

Harbin Institute of Technology
Harbin Institute of Technology

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

17 Scopus citations

Abstract

High temperature corrosion behavior of Nb containing a TiAl melt is studied connecting with grain boundary wetting (GBW). Three intermetallic compounds (IMC) layers are formed and corroded step by step via the TiAl melt. The interfacial morphology and wetting angle evolution are investigated theoretically and experimentally. The morphology of the grooves controlled by interfacial tension, while nonzero wetting angles θ_d controlled by surface diffusion are established at the roots. By quantitative assessment, when θ_d is more than 140°, the grooves terminating on a thin sheet, which is responsible for the effective inhibition of further wetting and corrosion.

Original language	English
Article number	109316
Journal	Corrosion Science
Volume	186
DOIs	https://doi.org/10.1016/j.corsci.2021.109316
State	Published - 1 Jul 2021

Keywords

Grain boundary wetting
High temperature corrosion
Intermetallic
Thermal grooving
TiAl alloy

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10.1016/j.corsci.2021.109316

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title = "The high temperature wetting and corrosion mechanism analysis of Nb by TiAl alloy melt",

abstract = "High temperature corrosion behavior of Nb containing a TiAl melt is studied connecting with grain boundary wetting (GBW). Three intermetallic compounds (IMC) layers are formed and corroded step by step via the TiAl melt. The interfacial morphology and wetting angle evolution are investigated theoretically and experimentally. The morphology of the grooves controlled by interfacial tension, while nonzero wetting angles θd controlled by surface diffusion are established at the roots. By quantitative assessment, when θd is more than 140°, the grooves terminating on a thin sheet, which is responsible for the effective inhibition of further wetting and corrosion.",

keywords = "Grain boundary wetting, High temperature corrosion, Intermetallic, Thermal grooving, TiAl alloy",

author = "Xianjun Lei and Xiaopeng Wang and Fantao Kong and Yuyong Chen",

note = "Publisher Copyright: {\textcopyright} 2021 Elsevier Ltd",

year = "2021",

month = jul,

day = "1",

doi = "10.1016/j.corsci.2021.109316",

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journal = "Corrosion Science",

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T1 - The high temperature wetting and corrosion mechanism analysis of Nb by TiAl alloy melt

AU - Lei, Xianjun

AU - Wang, Xiaopeng

AU - Kong, Fantao

AU - Chen, Yuyong

PY - 2021/7/1

Y1 - 2021/7/1

N2 - High temperature corrosion behavior of Nb containing a TiAl melt is studied connecting with grain boundary wetting (GBW). Three intermetallic compounds (IMC) layers are formed and corroded step by step via the TiAl melt. The interfacial morphology and wetting angle evolution are investigated theoretically and experimentally. The morphology of the grooves controlled by interfacial tension, while nonzero wetting angles θd controlled by surface diffusion are established at the roots. By quantitative assessment, when θd is more than 140°, the grooves terminating on a thin sheet, which is responsible for the effective inhibition of further wetting and corrosion.

AB - High temperature corrosion behavior of Nb containing a TiAl melt is studied connecting with grain boundary wetting (GBW). Three intermetallic compounds (IMC) layers are formed and corroded step by step via the TiAl melt. The interfacial morphology and wetting angle evolution are investigated theoretically and experimentally. The morphology of the grooves controlled by interfacial tension, while nonzero wetting angles θd controlled by surface diffusion are established at the roots. By quantitative assessment, when θd is more than 140°, the grooves terminating on a thin sheet, which is responsible for the effective inhibition of further wetting and corrosion.

KW - Grain boundary wetting

KW - High temperature corrosion

KW - Intermetallic

KW - Thermal grooving

KW - TiAl alloy

UR - https://www.scopus.com/pages/publications/85105911609

U2 - 10.1016/j.corsci.2021.109316

DO - 10.1016/j.corsci.2021.109316

M3 - 文章

AN - SCOPUS:85105911609

SN - 0010-938X

VL - 186

JO - Corrosion Science

JF - Corrosion Science

M1 - 109316

ER -

The high temperature wetting and corrosion mechanism analysis of Nb by TiAl alloy melt

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Keywords

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