Atomic force microscopy

Nanotechnology

Electrode

Coating

Composite number

Engineering

Physical chemistry

Composite material

Chemistry

Metallurgy

Materials science

Corrosion

Scanning electron microscope

Scanning electrochemical microscopy

Dielectric spectroscopy

Chemical engineering

Electrochemistry

Kelvin probe force microscope

Corrosion Reviews

This paper aims to review the impact of different factors influencing the corrosion resistance of electroless Ni-P based coatings. Emphasis has been given onto the impact of phosphorus content, incorporation of alloying elements, addition of particles and heat treatment which have been discussed in detail and critically reviewed. The effect of corrosive media and coating process parameters on corrosion resistance are studied concisely. Furthermore, the role of the incorporation of various elements and particles’ contents on the corrosion resistance of electroless Ni-P coating are studied systematically. This paper also presents an overview of the latest electrochemical corrosion measuring techniques. The following approaches deserve special attention in the analysis: localized electrochemical impedance spectroscopy (LEIS), scanning vibrating electrode technique (SVET), scanning ion-selective electrode technique (SIET), scanning droplet cell (SDC), scanning electrochemical microscopy (SECM), scanning Kelvin probe (SKP) and novel contactless technique (NCT).

A review on the corrosion resistance of electroless Ni-P based composite coatings and electrochemical corrosion testing methods