Evolution of oxidation scale for a Ni-22Cr-20Co-18W alloy at 1100°C

Jian Ma; Rui Hu; Hui Chang; Guanghai Bai; Jun Liu; Lian Zhou

Evolution of oxidation scale for a Ni-22Cr-20Co-18W alloy at 1100°C

Jian Ma, Rui Hu, Hui Chang, Guanghai Bai, Jun Liu, Lian Zhou

Northwestern Polytechnical University Xian

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

2 Scopus citations

Abstract

Evolution of oxidation scale for a Ni-22Cr-20Co-18W alloy at 1100°C was investigated by means of XRD and SEM (EDS). The results show that at the initial stage of the oxidation, a oxide scale of the mixture of Cr ₂O ₃, NiO and (Ni, Co, Mn, Cr) ₃O ₄, which is of M ₃O ₄ type, is formed on the surface. The single-layer oxide film changes into double layer one after long time oxidation, the sequential Cr ₂O ₃ scale forms at the inner layer, and the outer NiO scale could effectively retard the volatilization of the inner Cr ₂O ₃ scale; the voids are formed at the scale/alloy interface and inner oxidation of Al element is observed at the same time.

Original language	English
Pages (from-to)	486-489
Number of pages	4
Journal	Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering
Volume	41
Issue number	3
State	Published - Mar 2012
Externally published	Yes

Keywords

Constant temperature oxidation
Ni-22Cr-20Co-18W superalloy
Oxide scale
Void

Cite this

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title = "Evolution of oxidation scale for a Ni-22Cr-20Co-18W alloy at 1100°C",

abstract = "Evolution of oxidation scale for a Ni-22Cr-20Co-18W alloy at 1100°C was investigated by means of XRD and SEM (EDS). The results show that at the initial stage of the oxidation, a oxide scale of the mixture of Cr 2O 3, NiO and (Ni, Co, Mn, Cr) 3O 4, which is of M 3O 4 type, is formed on the surface. The single-layer oxide film changes into double layer one after long time oxidation, the sequential Cr 2O 3 scale forms at the inner layer, and the outer NiO scale could effectively retard the volatilization of the inner Cr 2O 3 scale; the voids are formed at the scale/alloy interface and inner oxidation of Al element is observed at the same time.",

keywords = "Constant temperature oxidation, Ni-22Cr-20Co-18W superalloy, Oxide scale, Void",

author = "Jian Ma and Rui Hu and Hui Chang and Guanghai Bai and Jun Liu and Lian Zhou",

year = "2012",

month = mar,

language = "英语",

volume = "41",

pages = "486--489",

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

issn = "1002-185X",

publisher = "Science China Press",

number = "3",

}

TY - JOUR

T1 - Evolution of oxidation scale for a Ni-22Cr-20Co-18W alloy at 1100°C

AU - Ma, Jian

AU - Hu, Rui

AU - Chang, Hui

AU - Bai, Guanghai

AU - Liu, Jun

AU - Zhou, Lian

PY - 2012/3

Y1 - 2012/3

N2 - Evolution of oxidation scale for a Ni-22Cr-20Co-18W alloy at 1100°C was investigated by means of XRD and SEM (EDS). The results show that at the initial stage of the oxidation, a oxide scale of the mixture of Cr 2O 3, NiO and (Ni, Co, Mn, Cr) 3O 4, which is of M 3O 4 type, is formed on the surface. The single-layer oxide film changes into double layer one after long time oxidation, the sequential Cr 2O 3 scale forms at the inner layer, and the outer NiO scale could effectively retard the volatilization of the inner Cr 2O 3 scale; the voids are formed at the scale/alloy interface and inner oxidation of Al element is observed at the same time.

AB - Evolution of oxidation scale for a Ni-22Cr-20Co-18W alloy at 1100°C was investigated by means of XRD and SEM (EDS). The results show that at the initial stage of the oxidation, a oxide scale of the mixture of Cr 2O 3, NiO and (Ni, Co, Mn, Cr) 3O 4, which is of M 3O 4 type, is formed on the surface. The single-layer oxide film changes into double layer one after long time oxidation, the sequential Cr 2O 3 scale forms at the inner layer, and the outer NiO scale could effectively retard the volatilization of the inner Cr 2O 3 scale; the voids are formed at the scale/alloy interface and inner oxidation of Al element is observed at the same time.

KW - Constant temperature oxidation

KW - Ni-22Cr-20Co-18W superalloy

KW - Oxide scale

KW - Void

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M3 - 文章

AN - SCOPUS:84860339281

SN - 1002-185X

VL - 41

SP - 486

EP - 489

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

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

IS - 3

ER -

Evolution of oxidation scale for a Ni-22Cr-20Co-18W alloy at 1100°C

Abstract

Keywords

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