Details

Autor(en) / Beteiligte

• Collins, M. N.
• Reid, M.
• Dalton, E.
• Shannon, K.
• Garfias-Mesias, L. F.

Titel

Corrosion under mixed flowing gas conditions of various connector coatings

Ist Teil von

• Materials and corrosion, 2013-01, Vol.64 (1), p.7-13

Ort / Verlag

Weinheim: WILEY-VCH Verlag

Erscheinungsjahr

2013

Quelle

Wiley Online Library

Beschreibungen/Notizen

• This paper presents an investigation on the corrosion performance of Ni/Au, NiP/Au, Ni/NiP/Au and Ni/NiPd/Au electrical connector coating systems. The coating systems were exposed to 10 days Class III mixed flowing gas and were subsequently examined by X‐ray diffraction, focused ion beam microscopy, scanning electron microscopy and energy dispersive spectroscopy to evaluate the performance of each coating system. The Ni/Au coating system showed the worst performance followed by NiP/Au and Ni/NiP/Au. The Ni/NiPd/Au coated connector materials exhibited the least surface corrosion and this was attributed to a number of factors including a thicker coating system, more compact gold layer with fewer defects and a reduction in the electrochemical potential difference between layers reducing the local cell effect.