ISO TR 26946
Standard method for porosity measurement of thermally sprayed coatings
|Publication Date:||15 November 2011|
|ICS Code (Surface treatment):||25.220.20|
This Technical Report describes a method for characterizing the porosity of thermally sprayed coatings by metallographical examination.
This method is particularly applicable to oxide coatings, such as Al2O3, ZrO2 and TiO2, produced by plasma spray. It also considers the purposes to test the size, shape and density of pores for thermally sprayed coatings.
The main purpose of porosity measurement is to determine the quality of a thermally sprayed coating and its freedom from porosity, particularly on those areas of the significant surface that demand a functional requirement.
This Technical Report provides a standard process that is suitable for determining the porosity of thermally sprayed coatings, as part of the total quality assurance programme.
This Technical Report is also intended to provide a standard way to present the porosity of thermally sprayed coatings.