Oxidation behavior of γ/Mo2Ni3Si ternary metal silicide alloy

Y. W. Xu; H. M. Wang

doi:10.1016/j.jallcom.2007.03.047

Oxidation behavior of γ/Mo₂Ni₃Si ternary metal silicide alloy

Y. W. Xu
, H. M. Wang

Beihang University

科研成果: 期刊稿件 › 文章 › 同行评审

21 引用（Scopus）

摘要

The oxidation behavior of Mo₂Ni₃Si based ternary metal silicide alloy toughened by small amount of nickel-base solid solution (γ) was investigated at 1173 K. The oxide scale was observed to have a duplex structure consisting of a top columnar NiO layer and an internal NiO-SiO₂ mixed layer with continuous SiO₂ formed at its base. The continuous SiO₂ layer made a significant contribution to the low oxidation rate through preventing the diffusion of oxygen and Ni²⁺. While, the cracks existing in the oxide scale due to growth stress, thermal stress and volatilization of MoO₃ provided rapid diffusion paths for oxygen and Ni²⁺ and deteriorated the alloy's oxidation resistance.

源语言	英语
页（从-至）	239-243
页数	5
期刊	Journal of Alloys and Compounds
卷	457
期	1-2
DOI	https://doi.org/10.1016/j.jallcom.2007.03.047
出版状态	已出版 - 12 6月 2008
已对外发布	是

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title = "Oxidation behavior of γ/Mo2Ni3Si ternary metal silicide alloy",

abstract = "The oxidation behavior of Mo2Ni3Si based ternary metal silicide alloy toughened by small amount of nickel-base solid solution (γ) was investigated at 1173 K. The oxide scale was observed to have a duplex structure consisting of a top columnar NiO layer and an internal NiO-SiO2 mixed layer with continuous SiO2 formed at its base. The continuous SiO2 layer made a significant contribution to the low oxidation rate through preventing the diffusion of oxygen and Ni2+. While, the cracks existing in the oxide scale due to growth stress, thermal stress and volatilization of MoO3 provided rapid diffusion paths for oxygen and Ni2+ and deteriorated the alloy's oxidation resistance.",

keywords = "High temperature alloys, Intermetallics, Laser processing, X-ray diffraction",

author = "Xu, \{Y. W.\} and Wang, \{H. M.\}",

year = "2008",

month = jun,

day = "12",

doi = "10.1016/j.jallcom.2007.03.047",

language = "英语",

volume = "457",

pages = "239--243",

journal = "Journal of Alloys and Compounds",

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T1 - Oxidation behavior of γ/Mo2Ni3Si ternary metal silicide alloy

AU - Xu, Y. W.

AU - Wang, H. M.

PY - 2008/6/12

Y1 - 2008/6/12

N2 - The oxidation behavior of Mo2Ni3Si based ternary metal silicide alloy toughened by small amount of nickel-base solid solution (γ) was investigated at 1173 K. The oxide scale was observed to have a duplex structure consisting of a top columnar NiO layer and an internal NiO-SiO2 mixed layer with continuous SiO2 formed at its base. The continuous SiO2 layer made a significant contribution to the low oxidation rate through preventing the diffusion of oxygen and Ni2+. While, the cracks existing in the oxide scale due to growth stress, thermal stress and volatilization of MoO3 provided rapid diffusion paths for oxygen and Ni2+ and deteriorated the alloy's oxidation resistance.

AB - The oxidation behavior of Mo2Ni3Si based ternary metal silicide alloy toughened by small amount of nickel-base solid solution (γ) was investigated at 1173 K. The oxide scale was observed to have a duplex structure consisting of a top columnar NiO layer and an internal NiO-SiO2 mixed layer with continuous SiO2 formed at its base. The continuous SiO2 layer made a significant contribution to the low oxidation rate through preventing the diffusion of oxygen and Ni2+. While, the cracks existing in the oxide scale due to growth stress, thermal stress and volatilization of MoO3 provided rapid diffusion paths for oxygen and Ni2+ and deteriorated the alloy's oxidation resistance.

KW - High temperature alloys

KW - Intermetallics

KW - Laser processing

KW - X-ray diffraction

UR - https://www.scopus.com/pages/publications/42649088119

U2 - 10.1016/j.jallcom.2007.03.047

DO - 10.1016/j.jallcom.2007.03.047

M3 - 文章

AN - SCOPUS:42649088119

SN - 0925-8388

VL - 457

SP - 239

EP - 243

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

IS - 1-2

ER -

Oxidation behavior of γ/Mo2Ni3Si ternary metal silicide alloy

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Oxidation behavior of γ/Mo₂Ni₃Si ternary metal silicide alloy