Significant improvement of the oxidation resistance of MoSiBTiC-based multiphase alloys by Ti enrichment

Tomotaka Hatakeyama; Shuntaro Ida; Nobuaki Sekido; Kyosuke Yoshimi

doi:10.1016/j.corsci.2020.108937

Significant improvement of the oxidation resistance of MoSiBTiC-based multiphase alloys by Ti enrichment

Tomotaka Hatakeyama, Shuntaro Ida, Nobuaki Sekido, Kyosuke Yoshimi

ENG - Materials Science

Tohoku University

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

19 Citations (Scopus)

Abstract

The effects of the Ti content on the microstructure and oxidation behaviour of Mo–yTi–14Si–6C–6B (atom %) alloys were investigated. Enrichment with Ti of up to 54% did not change the four-phase constitution of the Mo_ss, Mo₅SiB₂, Ti₅Si₃, or TiC phase, and improved the oxidation resistance of the alloy. The Mo–50Ti–14Si–6C–6B alloy exhibited the best oxidation resistance at 800–1200 °C through formation of a dense layer of TiO₂. This improvement can be described in terms of a modified Pilling–Bedworth ratio, which indicated that the densest TiO₂ layer formed on Mo_ss grains.

Original language	English
Article number	108937
Journal	Corrosion Science
Volume	176
DOIs	https://doi.org/10.1016/j.corsci.2020.108937
Publication status	Published - 2020 Nov

Keywords

Alloy
High temperature corrosion
Intermetallics
Oxidation
Titanium

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10.1016/j.corsci.2020.108937

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title = "Significant improvement of the oxidation resistance of MoSiBTiC-based multiphase alloys by Ti enrichment",

abstract = "The effects of the Ti content on the microstructure and oxidation behaviour of Mo–yTi–14Si–6C–6B (atom %) alloys were investigated. Enrichment with Ti of up to 54% did not change the four-phase constitution of the Moss, Mo5SiB2, Ti5Si3, or TiC phase, and improved the oxidation resistance of the alloy. The Mo–50Ti–14Si–6C–6B alloy exhibited the best oxidation resistance at 800–1200 °C through formation of a dense layer of TiO2. This improvement can be described in terms of a modified Pilling–Bedworth ratio, which indicated that the densest TiO2 layer formed on Moss grains.",

keywords = "Alloy, High temperature corrosion, Intermetallics, Oxidation, Titanium",

author = "Tomotaka Hatakeyama and Shuntaro Ida and Nobuaki Sekido and Kyosuke Yoshimi",

note = "Funding Information: This work was supported by the Advanced Low Carbon Technology Research and Development Program (ALCA) of the Japan Science and Technology Agency (JST) (No. JPMJAL1303 ). Publisher Copyright: {\textcopyright} 2020 Elsevier Ltd",

year = "2020",

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doi = "10.1016/j.corsci.2020.108937",

language = "English",

volume = "176",

journal = "Corrosion Science",

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T1 - Significant improvement of the oxidation resistance of MoSiBTiC-based multiphase alloys by Ti enrichment

AU - Hatakeyama, Tomotaka

AU - Ida, Shuntaro

AU - Sekido, Nobuaki

AU - Yoshimi, Kyosuke

N1 - Funding Information: This work was supported by the Advanced Low Carbon Technology Research and Development Program (ALCA) of the Japan Science and Technology Agency (JST) (No. JPMJAL1303 ). Publisher Copyright: © 2020 Elsevier Ltd

PY - 2020/11

Y1 - 2020/11

N2 - The effects of the Ti content on the microstructure and oxidation behaviour of Mo–yTi–14Si–6C–6B (atom %) alloys were investigated. Enrichment with Ti of up to 54% did not change the four-phase constitution of the Moss, Mo5SiB2, Ti5Si3, or TiC phase, and improved the oxidation resistance of the alloy. The Mo–50Ti–14Si–6C–6B alloy exhibited the best oxidation resistance at 800–1200 °C through formation of a dense layer of TiO2. This improvement can be described in terms of a modified Pilling–Bedworth ratio, which indicated that the densest TiO2 layer formed on Moss grains.

AB - The effects of the Ti content on the microstructure and oxidation behaviour of Mo–yTi–14Si–6C–6B (atom %) alloys were investigated. Enrichment with Ti of up to 54% did not change the four-phase constitution of the Moss, Mo5SiB2, Ti5Si3, or TiC phase, and improved the oxidation resistance of the alloy. The Mo–50Ti–14Si–6C–6B alloy exhibited the best oxidation resistance at 800–1200 °C through formation of a dense layer of TiO2. This improvement can be described in terms of a modified Pilling–Bedworth ratio, which indicated that the densest TiO2 layer formed on Moss grains.

KW - Alloy

KW - High temperature corrosion

KW - Intermetallics

KW - Oxidation

KW - Titanium

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JO - Corrosion Science

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Significant improvement of the oxidation resistance of MoSiBTiC-based multiphase alloys by Ti enrichment

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Keywords

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