Preparation and Characterization of d.c.-Plated Nanocrystalline Nickel Deposits

• Authors: B. Szeptycka , D. Derewnicka
• Languages of publication: EN

Abstracts

EN

The microstructure, microhardness, corrosion, and wear resistance of d.c.-plated Ni electrodeposits prepared from different types of electrolyzing Watts-type baths, without or with organic compounds, ceramic powder - SiC and polymer - polytetrafluoroethylene (PTFE), on Cu substrate, which was subsequently removed from the deposits, were investigated. With the change of the type of bath, the deposit grain size was found to decrease markedly, e.g. deposits with an average grain size of about 50 nm could be produced from a bath containing 45 g/dm^3 Ni^2+ ions, 5 g/dm^3 SiC, and 20 g/dm^3 PTFE. The surface morphology on the bath side of the electrodeposited Ni or Ni-SiC-PTFE foils was characteristic of the type of bath, and its roughness correlated well with the observed grain size. Microhardness and wear resistance increased with decreasing grain size, as expected. On discussing the factors controlling deposit grain size, it is concluded that the Ni^{2+} ion content in the bath and the presence of organic compounds may have a decisive role.

Keywords

EN

81.07.-b; 68.37.Lp; 68.60.-p

Discipline

• 68.37.Lp: Transmission electron microscopy (TEM)
• 81.07.-b: Nanoscale materials and structures: fabrication and characterization(for structure of nanoscale materials, see 61.46.-w; for nanostructured materials in electrochemistry, see 82.45.Yz; see also 62.23.-c Structural classes of nanoscale systems in mechanical properties of condensed matter)
• 68.60.-p: Physical properties of thin films, nonelectronic

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2002
• Volume: 102
• Issue: 2
• Pages: 199-205

Dates

published

2002-08

received

2001-09-23

Contributors

author

B. Szeptycka

• Institute of Precision Mechanics, Duchnicka 3, 01-796 Warsaw, Poland

author

D. Derewnicka

• Institute of Precision Mechanics, Duchnicka 3, 01-796 Warsaw, Poland

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Identifiers

DOI

10.12693/APhysPolA.102.199