Hivatkozási szám

MSZ EN ISO 21968:2020

Dokumentumazonosító

174581

Cím

Nemmágneses fémbevonatok fémes és nemfémes alapanyagokon. A rétegvastagság mérése. Fázisérzékeny örvényáramos módszer (ISO 21968:2019)

Angol cím

Non-magnetic metallic coatings on metallic and non-metallic basis materials. Measurement of coating thickness. Phase-sensitive eddy-current method (ISO 21968:2019)

Alkalmazási terület

This document specifies a method for using phase-sensitive eddy-current instruments for non-destructive measurements of the thickness of non-magnetic metallic coatings on metallic and non-metallic basis materials such as: a) zinc, cadmium, copper, tin or chromium on steel; b) copper or silver on composite materials. The phase-sensitive method can be applied without thickness errors to smaller surface areas and to stronger surface curvatures than the amplitude-sensitive eddy-current method specified in ISO 2360, and is less affected by the magnetic properties of the basis material. However, the phase-sensitive method is more affected by the electrical properties of the coating materials. In this document, the term “coating” is used for materials such as, for example, paints and varnishes, electroplated coatings, enamel coatings, plastic coatings, claddings and powder coatings. This method is particularly applicable to measurements of the thickness of metallic coatings. These coatings can be non-magnetic metallic coatings on non-conductive, conductive or magnetic base materials, but also magnetic coatings on non-conductive or conductive base materials. The measurement of metallic coatings on metallic basis material works only when the product of conductivity and permeability (szigma, mű) of one of the materials is at least a factor of two times the product of conductivity and permeability for the other material. Non-ferromagnetic materials have a relative permeability of one.

ICS

25.220.40 Fémbevonatok

Műszaki Bizottság

A szabvány nyelve

angol

Az érvényesség kezdete

2020-04-01

Forrás

idt EN ISO 21968:2019; idt ISO 21968:2019

Előd

MSZ EN ISO 21968:2005

Utód

Módosítás

SZK-közlemények

Kapcsolódó európai jogszabály

A szabvány

kapható formátuma

Papír ,
PDF (letöltés) (a fájl mérete: 1648170) ,

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46 oldal; T kategória

ára

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