Preparation of nanoporous Ni and Ni–Cu by dealloying of rolled Ni–Mn and Ni–Cu–Mn alloys

Nanoporous Ni, Ni–Cu and Cu with ligament sizes of 10–20 nm were fabricated by dealloying rolled Ni–Mn, Cu–Ni–Mn and Cu–Mn alloys, respectively. Unlike conventional Raney nickel composed of brittle Ni–Al intermetallic compounds, the initial alloys had good workability. Ni and Cu atoms formed a homog...

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Bibliographic Details
Published in:	Journal of alloys and compounds Vol. 485; no. 1; pp. 583 - 587
Main Authors:	Hakamada, Masataka, Mabuchi, Mamoru
Format:	Journal Article
Language:	English
Published:	Kidlington Elsevier B.V 19-10-2009 Elsevier
Subjects:	Corrosion Cross-disciplinary physics: materials science; rheology Exact sciences and technology Materials science Metals and alloys Nanoscale materials and structures: fabrication and characterization Nanostructured materials Other topics in nanoscale materials and structures Physics Corrosion Nanostructured materials Metals and alloys Workability Nickel alloys Intermetallic compounds Rolling Surface diffusion Nanostructures Dealloying Solid solutions Copper alloys Manganese alloys Nanoporosity
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Summary:	Nanoporous Ni, Ni–Cu and Cu with ligament sizes of 10–20 nm were fabricated by dealloying rolled Ni–Mn, Cu–Ni–Mn and Cu–Mn alloys, respectively. Unlike conventional Raney nickel composed of brittle Ni–Al intermetallic compounds, the initial alloys had good workability. Ni and Cu atoms formed a homogeneous solid solution in the nanoporous architecture. The ligament sizes of nanoporous Ni and Ni–Cu were smaller than that of nanoporous Cu, reflecting the difference between the surface diffusivities of Ni and Cu.
Bibliography:	ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23
ISSN:	0925-8388 1873-4669
DOI:	10.1016/j.jallcom.2009.06.031