Experimental and theoretical study for hot corrosion behavior of network structured TiBw/TA15 composite with NaCl film at 800 ℃

Qingxin Kang; Guofeng Wang; Yongkang Liu; Yuqing Chen; Shuyi Luo

doi:10.1016/j.corsci.2022.110540

Experimental and theoretical study for hot corrosion behavior of network structured TiB_w/TA15 composite with NaCl film at 800 ℃

Qingxin Kang
, Guofeng Wang^*
, Yongkang Liu
, Yuqing Chen
, Shuyi Luo

^*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

14 Scopus citations

Abstract

The hot corrosion behavior of network structured TiB_w/TA15 composite with NaCl film at 800 ℃ was investigated. After the 100 h test, the mass change was 50.13 mg cm⁻² and 400 µm scale with obvious pores and cracks formed on the substrate, which mainly composed by TiO₂ and Al₂O₃ with a few Na₂TiO₃, NaAlO₂ and Ti/Al chlorides. The adsorption of Cl atom on α-Ti (0001) and α-Ti (0001)-Al surfaces was studied by density functional theory. Chlorination-oxidation circulation was the main reason of the severe hot corrosion. Cracks and holes were mainly caused by the escape of high vapor pressure Ti/Al chlorides and thermal stress resulting from the rapid growth of the hot corrosion scale. In addition, approaches for improving the hot corrosion resistance were discussed.

Original language	English
Article number	110540
Journal	Corrosion Science
Volume	206
DOIs	https://doi.org/10.1016/j.corsci.2022.110540
State	Published - Sep 2022

Keywords

A. metal matrix composites
A. titanium
B. modeling studies
C. hot corrosion

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10.1016/j.corsci.2022.110540

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title = "Experimental and theoretical study for hot corrosion behavior of network structured TiBw/TA15 composite with NaCl film at 800 ℃",

abstract = "The hot corrosion behavior of network structured TiBw/TA15 composite with NaCl film at 800 ℃ was investigated. After the 100 h test, the mass change was 50.13 mg cm−2 and 400 µm scale with obvious pores and cracks formed on the substrate, which mainly composed by TiO2 and Al2O3 with a few Na2TiO3, NaAlO2 and Ti/Al chlorides. The adsorption of Cl atom on α-Ti (0001) and α-Ti (0001)-Al surfaces was studied by density functional theory. Chlorination-oxidation circulation was the main reason of the severe hot corrosion. Cracks and holes were mainly caused by the escape of high vapor pressure Ti/Al chlorides and thermal stress resulting from the rapid growth of the hot corrosion scale. In addition, approaches for improving the hot corrosion resistance were discussed.",

keywords = "A. metal matrix composites, A. titanium, B. modeling studies, C. hot corrosion",

author = "Qingxin Kang and Guofeng Wang and Yongkang Liu and Yuqing Chen and Shuyi Luo",

note = "Publisher Copyright: {\textcopyright} 2022 Elsevier Ltd",

year = "2022",

month = sep,

doi = "10.1016/j.corsci.2022.110540",

language = "英语",

volume = "206",

journal = "Corrosion Science",

issn = "0010-938X",

publisher = "Elsevier Ltd",

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TY - JOUR

T1 - Experimental and theoretical study for hot corrosion behavior of network structured TiBw/TA15 composite with NaCl film at 800 ℃

AU - Kang, Qingxin

AU - Wang, Guofeng

AU - Liu, Yongkang

AU - Chen, Yuqing

AU - Luo, Shuyi

PY - 2022/9

Y1 - 2022/9

N2 - The hot corrosion behavior of network structured TiBw/TA15 composite with NaCl film at 800 ℃ was investigated. After the 100 h test, the mass change was 50.13 mg cm−2 and 400 µm scale with obvious pores and cracks formed on the substrate, which mainly composed by TiO2 and Al2O3 with a few Na2TiO3, NaAlO2 and Ti/Al chlorides. The adsorption of Cl atom on α-Ti (0001) and α-Ti (0001)-Al surfaces was studied by density functional theory. Chlorination-oxidation circulation was the main reason of the severe hot corrosion. Cracks and holes were mainly caused by the escape of high vapor pressure Ti/Al chlorides and thermal stress resulting from the rapid growth of the hot corrosion scale. In addition, approaches for improving the hot corrosion resistance were discussed.

AB - The hot corrosion behavior of network structured TiBw/TA15 composite with NaCl film at 800 ℃ was investigated. After the 100 h test, the mass change was 50.13 mg cm−2 and 400 µm scale with obvious pores and cracks formed on the substrate, which mainly composed by TiO2 and Al2O3 with a few Na2TiO3, NaAlO2 and Ti/Al chlorides. The adsorption of Cl atom on α-Ti (0001) and α-Ti (0001)-Al surfaces was studied by density functional theory. Chlorination-oxidation circulation was the main reason of the severe hot corrosion. Cracks and holes were mainly caused by the escape of high vapor pressure Ti/Al chlorides and thermal stress resulting from the rapid growth of the hot corrosion scale. In addition, approaches for improving the hot corrosion resistance were discussed.

KW - A. metal matrix composites

KW - A. titanium

KW - B. modeling studies

KW - C. hot corrosion

UR - https://www.scopus.com/pages/publications/85134830267

U2 - 10.1016/j.corsci.2022.110540

DO - 10.1016/j.corsci.2022.110540

M3 - 文章

AN - SCOPUS:85134830267

SN - 0010-938X

VL - 206

JO - Corrosion Science

JF - Corrosion Science

M1 - 110540

ER -

Experimental and theoretical study for hot corrosion behavior of network structured TiB_w/TA15 composite with NaCl film at 800 ℃

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Keywords

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