introduction
ISO (International Organization for Standardization) is a global alliance of national standards bodies (ISO member bodies). The development of international standards is usually carried out through ISO technical committees. Each member institution interested in a subject on which a technical committee has been established has the right to be represented on that committee. International governmental and non-governmental organizations liaising with ISO are also involved in this work. ISO works closely with the International Electrotechnical Commission (IEC) on all matters of electrical standardization.

International standards are drafted in accordance with the rules given in Part 2 of the ISO/IEC Directive.

The main task of the technical committee is to develop international standards. The draft international standard adopted by the Technical Committee will be circulated to the member bodies for voting. Publication as an international standard requires approval by at least 75% of member institutions.

ISO 26423-2009 “Fine ceramics (advanced ceramics, advanced technical ceramics) by pit grinding method determination of coating thickness”

Please note that certain elements of this document may be subject to patent rights. ISO is not responsible for identifying any or all such patents.

ISO 26423 was developed by the Technical committee ISO/TC 206 for Fine Ceramics.

1 Range
This standard specifies a method for determining the thickness of ceramic coatings by the shrinkage grinding method, which includes the grinding of a spherical cavity and subsequent microscopic examination of the shrinkage.

Due to the uncertainty introduced in the measurement of pit mouth dimensions, this test is not suitable for use when the surface roughness of the coating and/or substrate exceeds 20% of the coating thickness.

Note that ISO 18452 gives an alternative method of measuring thickness using a contact probe profiler.

ISO 26423-2009 “Fine ceramics (advanced ceramics, advanced technical ceramics) by pit grinding method determination of coating thickness”

2 Normative references
The following reference files are difficult or lacking for the use of this document. For dated references, only the cited version applies. For undated references, a new version of the reference (including any revisions) applies.

ISO 3290-1, Rolling bearings – Balls – Part 1: Steel balls

ISO/IEC 17025:2005, General requirements for testing and calibration laboratory competence

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