Oxidation behaviour of a MoSiBTiC alloy coated by a (Si+B) co-deposition pack cementation method

Xi Nan; Shuntaro Ida; Nobuaki Sekido; Kyosuke Yoshimi; John H. Perepezko

doi:10.1016/j.corsci.2023.110990

Oxidation behaviour of a MoSiBTiC alloy coated by a (Si+B) co-deposition pack cementation method

Xi Nan, Shuntaro Ida, Nobuaki Sekido, Kyosuke Yoshimi, John H. Perepezko

ENG - Materials Science

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

Abstract

A MoSiB based coating was applied to the 1st-generation MoSiBTiC alloy using pack cementation process. After conditioning at 1300 °C for 10 h in air, the coating developed into four layers: an oxide layer, a MoSi₂ layer with Mo₅Si₃ and MoB precipitates, a Mo₅Si₃ layer, and a MoB+Mo₅SiB₂ (T₂) layer. However, visible holes often formed in the coating due to defects, and the oxidation proceeded to the substrate during subsequent cyclic oxidation. In a controlled test on a MoSiBTiC alloy with lower TiC volume fraction, an intact coating formed after the conditioning at 1300 °C and provided an effective oxidation resistance.

Original language	English
Article number	110990
Journal	Corrosion Science
Volume	214
DOIs	https://doi.org/10.1016/j.corsci.2023.110990
Publication status	Published - 2023 Apr 15

Keywords

A. Intermetallics
A. Metal coatings
B. EPMA
C. Oxidation

ASJC Scopus subject areas

Chemistry(all)
Chemical Engineering(all)
Materials Science(all)

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10.1016/j.corsci.2023.110990

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title = "Oxidation behaviour of a MoSiBTiC alloy coated by a (Si+B) co-deposition pack cementation method",

abstract = "A MoSiB based coating was applied to the 1st-generation MoSiBTiC alloy using pack cementation process. After conditioning at 1300 °C for 10 h in air, the coating developed into four layers: an oxide layer, a MoSi2 layer with Mo5Si3 and MoB precipitates, a Mo5Si3 layer, and a MoB+Mo5SiB2 (T2) layer. However, visible holes often formed in the coating due to defects, and the oxidation proceeded to the substrate during subsequent cyclic oxidation. In a controlled test on a MoSiBTiC alloy with lower TiC volume fraction, an intact coating formed after the conditioning at 1300 °C and provided an effective oxidation resistance.",

keywords = "A. Intermetallics, A. Metal coatings, B. EPMA, C. Oxidation",

author = "Xi Nan and Shuntaro Ida and Nobuaki Sekido and Kyosuke Yoshimi and Perepezko, {John H.}",

note = "Funding Information: This work was partly supported by MIRAI Program ( JPMJMI17E7 ) from the Japan Science and Technology (JST) and a Grant-in-Aid for scientific research (A) (Grant No. 21H04606 ) from the Japan Society for the Promotion of Science (JSPS). Publisher Copyright: {\textcopyright} 2023 Elsevier Ltd",

year = "2023",

month = apr,

day = "15",

doi = "10.1016/j.corsci.2023.110990",

language = "English",

volume = "214",

journal = "Corrosion Science",

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T1 - Oxidation behaviour of a MoSiBTiC alloy coated by a (Si+B) co-deposition pack cementation method

AU - Nan, Xi

AU - Ida, Shuntaro

AU - Sekido, Nobuaki

AU - Yoshimi, Kyosuke

AU - Perepezko, John H.

N1 - Funding Information: This work was partly supported by MIRAI Program ( JPMJMI17E7 ) from the Japan Science and Technology (JST) and a Grant-in-Aid for scientific research (A) (Grant No. 21H04606 ) from the Japan Society for the Promotion of Science (JSPS). Publisher Copyright: © 2023 Elsevier Ltd

PY - 2023/4/15

Y1 - 2023/4/15

N2 - A MoSiB based coating was applied to the 1st-generation MoSiBTiC alloy using pack cementation process. After conditioning at 1300 °C for 10 h in air, the coating developed into four layers: an oxide layer, a MoSi2 layer with Mo5Si3 and MoB precipitates, a Mo5Si3 layer, and a MoB+Mo5SiB2 (T2) layer. However, visible holes often formed in the coating due to defects, and the oxidation proceeded to the substrate during subsequent cyclic oxidation. In a controlled test on a MoSiBTiC alloy with lower TiC volume fraction, an intact coating formed after the conditioning at 1300 °C and provided an effective oxidation resistance.

AB - A MoSiB based coating was applied to the 1st-generation MoSiBTiC alloy using pack cementation process. After conditioning at 1300 °C for 10 h in air, the coating developed into four layers: an oxide layer, a MoSi2 layer with Mo5Si3 and MoB precipitates, a Mo5Si3 layer, and a MoB+Mo5SiB2 (T2) layer. However, visible holes often formed in the coating due to defects, and the oxidation proceeded to the substrate during subsequent cyclic oxidation. In a controlled test on a MoSiBTiC alloy with lower TiC volume fraction, an intact coating formed after the conditioning at 1300 °C and provided an effective oxidation resistance.

KW - A. Intermetallics

KW - A. Metal coatings

KW - B. EPMA

KW - C. Oxidation

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DO - 10.1016/j.corsci.2023.110990

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AN - SCOPUS:85147411945

SN - 0010-938X

VL - 214

JO - Corrosion Science

JF - Corrosion Science

M1 - 110990

ER -

Oxidation behaviour of a MoSiBTiC alloy coated by a (Si+B) co-deposition pack cementation method

Abstract

Keywords

ASJC Scopus subject areas

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