EN ISO 14571:2022 PDF
Metallic coatings on non-metallic basis materials - Measurement of coating thickness - Micro-resistivity method (ISO 14571:2020)
Metallic coatings on non-metallic basis materials - Measurement of coating thickness - Micro-resistivity method (ISO 14571:2020)
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 16
- Дата публикации:
- 9 ноября 2022 г.
- Издание:
- CEN EN 14571 edition 2 version 1
- ICS:
- 17.040.20
This document specifies a method for non-destructive measurements of the thickness of conductive coatings on non-conductive base materials. This method is based on the principle of the sheet resistivity measurement and is applicable to any conductive coatings and layers of metal and semiconductor materials. In general, the probe has to be adjusted to the conductivity and the thickness of the respective application. However, this document focuses on metallic coatings on non-conductive base materials (e.g. copper on plastic substrates, printed circuit boards). This method is also applicable to thickness measurements of conductive coatings on conductive base materials, if the resistivity of the coating and the base material is significantly different. However, this case is not considered in this document.
Abstract
Overview
EN ISO 14571:2022 (ISO 14571:2020) specifies a non‑destructive method for measuring the thickness of conductive metallic coatings on non‑metallic basis materials using the micro‑resistivity (sheet resistivity) method. The standard describes the use of a four‑point probe to determine coating thickness on substrates such as copper on plastic and printed circuit boards (PCBs). While applicable to metal and semiconductor coatings in general, the document focuses on conductive coatings over non‑conductive bases and has been adopted by CEN as EN ISO 14571:2022.
Key Topics
- Measurement principle: Uses a four‑point probe (outer current contacts and inner voltage contacts) to measure sheet resistivity; thickness is inferred from the measured voltage drop for a known current and coating resistivity.
- Practical formulae and limits: Provides the standard approximation for equal probe spacings and thin coatings (ratio t/S
Технические детали
- Технический комитет
- CEN/TC 262 - Metallic and other inorganic coatings
- SKU
- EN ISO 14571:2022
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