prefazione
ISO (Organizzazione internazionale per la standardizzazione) è la federazione globale degli organismi nazionali di normalizzazione (Organismi membri dell'ISO). Lo sviluppo di standard internazionali viene solitamente effettuato attraverso i comitati tecnici ISO. Ciascun gruppo aderente interessato ad un argomento sul quale è stato costituito un comitato tecnico ha il diritto di essere rappresentato nel comitato. Internazionale, In questo lavoro sono coinvolte anche organizzazioni governative e non governative in collegamento con l'ISO. L'ISO lavora a stretto contatto con la Commissione Elettrotecnica Internazionale (CEI) su tutte le questioni di standardizzazione elettrica.

Parte 1 of the ISO/IEC Directive describes the procedures used to develop this document and for further maintenance. In particolare, notare i diversi standard di approvazione richiesti per i diversi tipi di documenti ISO. This document has been drafted in accordance with the editorial rules in Part 2 della Direttiva ISO/IEC (vedere iso.org/directives).

Si prega di notare che alcuni elementi di questo documento potrebbero essere oggetto di diritti di brevetto. L'ISO non è responsabile dell'identificazione di alcuni o tutti questi brevetti. Details of any patent rights identified during the documentation development process will be included in the introduction and/or list of ISO patent claims received (vedere iso.org/patents).

Tutti i nomi commerciali utilizzati nel presente documento sono informazioni fornite per comodità dell'utente e non costituiscono un'approvazione.

Explanations of the relevant standards of voluntary, ISO specific terms related to conformity assessment and the expression of meaning, and the ISO in the technical barriers to trade (TBT) aderire al principio dell’organizzazione mondiale del commercio (OMC) informazione, please refer to the iso.org/iso/foreword.html.

This document has been prepared by ISO/TC 206 Technical Committee on Fine Ceramics.

Any feedback or questions on this document should be referred to the user’s national standards body. A complete list of these institutions can be found at iso.org/members.html.

ISO 23737-2021 “Ceramica pregiata (Ceramica avanzata, ceramica tecnica avanzata) – Metodi per valutare le caratteristiche di usura e attrito dei film ceramici fini in condizioni asciutte e umide”

introdurre
Fine ceramic films are used in a variety of applications, such as sensors, actuators or other micromechanical components; Display element; Memory element; Recording media; Optical element; Packaging film; And films and glass for buildings and vehicles. In the industrial application of fine ceramic films, wear resistance is an important index for evaluation. The wear resistance of fine ceramic films is greatly affected by the ambient humidity and the humidity history of the films. Fine ceramic films are also used in different humidity environments where criteria are required to evaluate wear resistance and friction coefficient over a wide humidity range. The standards published to date for wear resistance testing only assume a temperature environment of 23 °C e un'umidità relativa di 50 %. The thickness of the film to be measured is also relatively large, with a few to 10μm. These test procedures are not suitable for evaluating the wear resistance of fine ceramic films with thickness up to approximately 1 µm for use in electronic and optical devices because the wear resistance of small indentation loads is affected by the relative humidity of the test environment, cioè. the mechanism used in the wear testing of fine ceramic films with small indentation loads is strongly affected by the relative humidity of the test environment. Perciò, the wear test of fine ceramic film should be carried out under the specified relative humidity conditions. This document provides measurements that help accurately assess the wear resistance of fine ceramic films, up to a thickness of approximately 1 µm, deposited on thin substrates or organic polymer films, in dry and high humidity environments. The present document has been developed to facilitate industrial development through the rapid dissemination of these measurements.

1 Ambito di applicazione
This document specifies a method for testing the wear resistance and friction coefficient of fine ceramic films in dry and high humidity environments, where such films may be up to approximately 1 µm thick and deposited on a substrate or base, including thin or very thin organic polymer film substrates.

2 File di riferimento normativo
Quando si fa riferimento ai seguenti documenti nel contesto, parte o tutti costituiscono i requisiti del presente documento. Per riferimenti datati, si applicano versioni solo per citazioni. Per citazioni senza data, la versione più recente del documento a cui si fa riferimento (compresi eventuali emendamenti) si applica.

ISO 3274, Geometric Product Specification (GPS) – Surface texture: section method – Nominal characteristics of contact (stylus) strumenti

ISO 13565-1, Geometric Product Specification (GPS) – Surface Texture: Section method Surfaces with layered functional properties – Parte 1: filtration and general measurement conditions

ISO 13565-2, Geometric Product Specification (GPS) – Surface Texture: Section method Surfaces with layered functional properties – Parte 2: Characterization of heights using linear material ratio curves

ISO 20507, Ceramica pregiata (Ceramica avanzata, ceramica tecnica avanzata) — Vocabolario

3 Termini e definizioni
Ai fini del presente documento, i termini e le definizioni fornite nella norma ISO 20507 e di seguito si applicano.

3.2 Friction force

The resistance exerted on a relative body when objects in contact move or tend to slide against each other

3.3 Friction coefficient

The dimensionless ratio of friction to the applied normal force

3.4 Wear test

Tests for the evaluation of friction and wear characteristics caused by sliding contact motion

Nota 1: In a narrow sense, il termine “wear test” refers to the process by which wear occurs on the specimen as a result of sliding motion; In broad terms, it means processes such as sample preparation, wear formation, friction coefficient measurement, and evaluation of wear trajectoryand wear parts formed on the inverse material.

3.5 Drying Chamber

A sealed container for removing moisture from the surface of the sample while the sample is kept in a vacuum

3.6 Umidità relativa

Ratio of partial vapor pressure to saturated vapor pressure at a given temperature

3.7 Dry air

Air with a dew point of −60 °C or lower at an absolute pressure of 101.3 kPa

3.8 Dry Nitrogen

At an absolute pressure of 101.3 kPa, the dew point is −60 °C or lower nitrogen

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