Development of nanocrystalline nickel by pulse reverse microelectroforming

Author

Ligeng Shao ; Liqun Du ; Liding Wang

Author_Institution

Key Lab. for Precision & Non-Traditional Machining Technol. of Minist. of Educ., Dalian Univ. of Technol., Dalian, China

Volume

5

Issue

3

fYear

2010

fDate

6/1/2010 12:00:00 AM

Firstpage

165

Lastpage

170

Abstract

Pulse reverse microelectroforming is proposed in order to improve mechanical properties of nanocrystalline metal deposits. Under different positive and negative current conditions, nanocrystalline nickel deposits were synthesised by pulse reverse microelectroforming. The reason why the grain sizes of deposits were decreased in pulse reverse microelectroforming was analysed. While positive current density exceeds 10 A/dm², the average grain size of the pulse reverse deposit is smaller than that of the pulse deposit at the same positive pulse current, and the microhardness of the pulse reverse deposit is improved compared with that of the pulse deposit. Pulse reverse current microelectroforming may be applied to synthesise refined nanocrystalline metal microstructures.

Keywords

crystal microstructure; current density; electroforming; grain size; microhardness; nanofabrication; nanostructured materials; nickel; Ni; average grain size; microhardness; nanocrystalline metal deposits; nanocrystalline metal microstructures; nanocrystalline nickel deposits; positive current density; positive pulse current; pulse reverse microelectroforming;

fLanguage

English

Journal_Title

Micro & Nano Letters, IET

Publisher

iet

ISSN

1750-0443

Type

jour

DOI

10.1049/mnl.2010.0037

Filename

5504872