Low cost high specific surface architectured nanoporous metal with corrosion resistance produced by liquid metal dealloying from commercial nickel superalloy

Morgane Mokhtari; Takeshi Wada; Christophe Le Bourlot; Nicolas Mary; Jannick Duchet-Rumeau; Hidemi Kato; Eric Maire

doi:10.1016/j.scriptamat.2018.12.023

Low cost high specific surface architectured nanoporous metal with corrosion resistance produced by liquid metal dealloying from commercial nickel superalloy

Morgane Mokhtari, Takeshi Wada, Christophe Le Bourlot, Nicolas Mary, Jannick Duchet-Rumeau, Hidemi Kato, Eric Maire

IMR - Materials Development Division

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

13 Citations (Scopus)

Abstract

Liquids metal dealloying is a new technology to create porous materials. In this study, a commercial Incoloy 825 nickel superalloy is dealloyed for 1 h at 3 different temperatures to elaborate a fully porous FeCr-based metal with 3 different porous microstructures. The resulting porous metals showed unimodal pore distribution, hierarchical structure or, contain large ligaments inclusions. The passivation ability of the porous material was conformed irrespective of the microstructure. This letter proves the possibility of fabricating low cost high specific surface materials for electrochemical applications.

Original language	English
Pages (from-to)	5-8
Number of pages	4
Journal	Scripta Materialia
Volume	163
DOIs	https://doi.org/10.1016/j.scriptamat.2018.12.023
Publication status	Published - 2019 Apr 1

Keywords

Corrosion
Dealloying
Iron alloys
Nickel superalloy
Porous material

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10.1016/j.scriptamat.2018.12.023

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title = "Low cost high specific surface architectured nanoporous metal with corrosion resistance produced by liquid metal dealloying from commercial nickel superalloy",

abstract = "Liquids metal dealloying is a new technology to create porous materials. In this study, a commercial Incoloy 825 nickel superalloy is dealloyed for 1 h at 3 different temperatures to elaborate a fully porous FeCr-based metal with 3 different porous microstructures. The resulting porous metals showed unimodal pore distribution, hierarchical structure or, contain large ligaments inclusions. The passivation ability of the porous material was conformed irrespective of the microstructure. This letter proves the possibility of fabricating low cost high specific surface materials for electrochemical applications.",

keywords = "Corrosion, Dealloying, Iron alloys, Nickel superalloy, Porous material",

author = "Morgane Mokhtari and Takeshi Wada and {Le Bourlot}, Christophe and Nicolas Mary and Jannick Duchet-Rumeau and Hidemi Kato and Eric Maire",

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T1 - Low cost high specific surface architectured nanoporous metal with corrosion resistance produced by liquid metal dealloying from commercial nickel superalloy

AU - Mokhtari, Morgane

AU - Wada, Takeshi

AU - Le Bourlot, Christophe

AU - Mary, Nicolas

AU - Duchet-Rumeau, Jannick

AU - Kato, Hidemi

AU - Maire, Eric

PY - 2019/4/1

Y1 - 2019/4/1

N2 - Liquids metal dealloying is a new technology to create porous materials. In this study, a commercial Incoloy 825 nickel superalloy is dealloyed for 1 h at 3 different temperatures to elaborate a fully porous FeCr-based metal with 3 different porous microstructures. The resulting porous metals showed unimodal pore distribution, hierarchical structure or, contain large ligaments inclusions. The passivation ability of the porous material was conformed irrespective of the microstructure. This letter proves the possibility of fabricating low cost high specific surface materials for electrochemical applications.

AB - Liquids metal dealloying is a new technology to create porous materials. In this study, a commercial Incoloy 825 nickel superalloy is dealloyed for 1 h at 3 different temperatures to elaborate a fully porous FeCr-based metal with 3 different porous microstructures. The resulting porous metals showed unimodal pore distribution, hierarchical structure or, contain large ligaments inclusions. The passivation ability of the porous material was conformed irrespective of the microstructure. This letter proves the possibility of fabricating low cost high specific surface materials for electrochemical applications.

KW - Corrosion

KW - Dealloying

KW - Iron alloys

KW - Nickel superalloy

KW - Porous material

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Low cost high specific surface architectured nanoporous metal with corrosion resistance produced by liquid metal dealloying from commercial nickel superalloy

Abstract

Keywords

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