ISO 2361:2025

Electrodeposited nickel coatings on magnetic and non-magnetic substrates - Measurement of coating thickness - Magnetic method

This document specifies the method for non-destructive thickness measurement via the magnetic type of electrodeposited nickel coatings, also called ?e-nickel?, on magnetic or non-magnetic substrates.

It is possible that the method is not applicable to autocatalytic (electroless) nickel coatings, since these coatings are often non-magnetic due to their chemical composition.

For the purposes of this document, two types of substrates are distinguished:

a)       nickel coatings on magnetic substrates (type A coatings);

b)       nickel coatings on non-magnetic substrates (type B coatings).

Not all instruments are applicable to both types of coating.

The effective measuring ranges of instruments using the principle of magnetic attraction are up to 50 µm for type A coatings and up to 25 µm for type B coatings.

For instruments using the principle of reluctance, the effective ranges are much greater, up to 1 mm or even more. This method is applicable to both types of coatings.

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