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BS EN ISO 2361 ISO 2361 Electrodeposited nickel coatings on magnetic and non-magnetic substrates. Measurement of coating thickness. Magnetic method

Source:
ISO
Committee:
ISENFE/8 - Corrosion of metals and alloys
Categories:
Metallic coatings
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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 can be that the method is not applicable to autocatalytic (electroless) nickel coatings depending on their chemical composition since this coating is often non-magnetic.

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 for both types of coatings.

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