Study on oxidation property of TiAl/NiCoCrAl microlaminated sheet prepared by EB-PVD

Guiqing Chen; Rubing Zhang; Deming Zhang; Hao Zou

Study on oxidation property of TiAl/NiCoCrAl microlaminated sheet prepared by EB-PVD

Guiqing Chen^*
, Rubing Zhang
, Deming Zhang
, Hao Zou

^*Corresponding author for this work

School of Astronautics

Harbin Institute of Technology
Beijing General Research Institute of Mining and Metallurgy

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

2 Scopus citations

Abstract

TiAl/NiCoCrAl microlaminated sheet prepared by EB-PVD have been oxygenized in air at 850°C, and its oxidation property has been studied. The phase composition and microstructure have been analyzed by XRD and SEM. The results show TiAl/NiCoCrAl microlaminated sheet has good oxidation resistance and the oxidation kinetics curves follow the parabolic law. The oxidation mechanisms of TiAl/NiCoCrAl microlaminated sheet at high temperature is that Al on the surface will generate the Al ₂O ₃ monolayer oxide film with porous structure firstly, subsequently some Ti element in the inner TiAl layers will cross over the NiCoCrAl layers and reach the surface to generate the (TiO ₂ + Al ₂O ₃) oxide layer, and finally Ni and Cr in the NiCoCrAl layers can generate compact outer oxide film composed of Cr ₂O ₃ and NiCr ₂O ₄ phase, which is the essential reason why the oxidation resistance of the sheet increases obviously.

Original language	English
Pages (from-to)	120-123
Number of pages	4
Journal	Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering
Volume	41
Issue number	1
State	Published - Jan 2012

Keywords

EB-PVD
Microlaminated sheet
Oxidation property
TiAl/NiCoCrAl

Cite this

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title = "Study on oxidation property of TiAl/NiCoCrAl microlaminated sheet prepared by EB-PVD",

abstract = "TiAl/NiCoCrAl microlaminated sheet prepared by EB-PVD have been oxygenized in air at 850°C, and its oxidation property has been studied. The phase composition and microstructure have been analyzed by XRD and SEM. The results show TiAl/NiCoCrAl microlaminated sheet has good oxidation resistance and the oxidation kinetics curves follow the parabolic law. The oxidation mechanisms of TiAl/NiCoCrAl microlaminated sheet at high temperature is that Al on the surface will generate the Al 2O 3 monolayer oxide film with porous structure firstly, subsequently some Ti element in the inner TiAl layers will cross over the NiCoCrAl layers and reach the surface to generate the (TiO 2 + Al 2O 3) oxide layer, and finally Ni and Cr in the NiCoCrAl layers can generate compact outer oxide film composed of Cr 2O 3 and NiCr 2O 4 phase, which is the essential reason why the oxidation resistance of the sheet increases obviously.",

keywords = "EB-PVD, Microlaminated sheet, Oxidation property, TiAl/NiCoCrAl",

author = "Guiqing Chen and Rubing Zhang and Deming Zhang and Hao Zou",

year = "2012",

month = jan,

language = "英语",

volume = "41",

pages = "120--123",

journal = "Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering",

issn = "1002-185X",

publisher = "Science Press ",

number = "1",

}

TY - JOUR

T1 - Study on oxidation property of TiAl/NiCoCrAl microlaminated sheet prepared by EB-PVD

AU - Chen, Guiqing

AU - Zhang, Rubing

AU - Zhang, Deming

AU - Zou, Hao

PY - 2012/1

Y1 - 2012/1

N2 - TiAl/NiCoCrAl microlaminated sheet prepared by EB-PVD have been oxygenized in air at 850°C, and its oxidation property has been studied. The phase composition and microstructure have been analyzed by XRD and SEM. The results show TiAl/NiCoCrAl microlaminated sheet has good oxidation resistance and the oxidation kinetics curves follow the parabolic law. The oxidation mechanisms of TiAl/NiCoCrAl microlaminated sheet at high temperature is that Al on the surface will generate the Al 2O 3 monolayer oxide film with porous structure firstly, subsequently some Ti element in the inner TiAl layers will cross over the NiCoCrAl layers and reach the surface to generate the (TiO 2 + Al 2O 3) oxide layer, and finally Ni and Cr in the NiCoCrAl layers can generate compact outer oxide film composed of Cr 2O 3 and NiCr 2O 4 phase, which is the essential reason why the oxidation resistance of the sheet increases obviously.

AB - TiAl/NiCoCrAl microlaminated sheet prepared by EB-PVD have been oxygenized in air at 850°C, and its oxidation property has been studied. The phase composition and microstructure have been analyzed by XRD and SEM. The results show TiAl/NiCoCrAl microlaminated sheet has good oxidation resistance and the oxidation kinetics curves follow the parabolic law. The oxidation mechanisms of TiAl/NiCoCrAl microlaminated sheet at high temperature is that Al on the surface will generate the Al 2O 3 monolayer oxide film with porous structure firstly, subsequently some Ti element in the inner TiAl layers will cross over the NiCoCrAl layers and reach the surface to generate the (TiO 2 + Al 2O 3) oxide layer, and finally Ni and Cr in the NiCoCrAl layers can generate compact outer oxide film composed of Cr 2O 3 and NiCr 2O 4 phase, which is the essential reason why the oxidation resistance of the sheet increases obviously.

KW - EB-PVD

KW - Microlaminated sheet

KW - Oxidation property

KW - TiAl/NiCoCrAl

UR - https://www.scopus.com/pages/publications/84863138181

M3 - 文章

AN - SCOPUS:84863138181

SN - 1002-185X

VL - 41

SP - 120

EP - 123

JO - Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering

JF - Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering

IS - 1

ER -

Study on oxidation property of TiAl/NiCoCrAl microlaminated sheet prepared by EB-PVD

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