25.220.99 - Other treatments and coatings

This document describes the electrical contact resistance testing method applicable to conductive and non-conductive coatings applied on test specimens made of conductive materials (unless otherwise specified) for aerospace applications. An objective of this practice is to define and control many of the known variables in such a way that valid comparisons of the contact properties of materials can be made.This test may be locally destructive depending on the process tested.

This document describes the electrical contact resistance testing method applicable to conductive and non-conductive coatings applied on test specimens made of conductive materials (unless otherwise specified) for aerospace applications. An objective of this practice is to define and control many of the known variables in such a way that valid comparisons of the contact properties of materials can be made.
This test may be locally destructive depending on the process tested.

This document specifies a quantitative method for the measurement of adhesive strength of metallic and other inorganic coatings applied to metallic, polymer and glass substrates.
Typical coatings for which this document applies are metallic coatings such as aluminium, copper, nickel, nickel plus chromium, silver, tin, tin-nickel alloys, zinc, gold as well as other inorganic coatings such as oxides or nitrides, e.g. of aluminium, indium and indium-tin, silicon, niobium, titanium, tungsten, zirco...view more

ISO 21809-1:2011 specifies requirements of plant-applied external three-layer polyethylene- and polypropylene-based coatings for corrosion protection of welded and seamless steel pipes for pipeline transportation systems in the petroleum and natural gas industries in accordance with ISO 13623.
Pipes coated in accordance with ISO 21809-1:2011 are considered suitable for further protection by means of cathodic protection.

This European Standard specifies the agreements to be made between the client, the galvanizer / sherardizer, the chemical suppliers and the applicators of the pre-treatment and the powder organic coating systems (if they are not one and the same). It also specifies the quality of the galvanized or sherardized articles to which the powder organic coatings are to be applied and for the pre-treatment and powder organic coatings intended for application to the galvanized or sherardized articles.
Th...view more

This European Standard specifies trivalent chromium based chemical conversion coatings for aluminium
and aluminium alloys. It covers the application by bath but also by touch-up. It doesn’t give complete
in-house process instructions; these shall be given in the manufacturers detailed process instructions.

This document specifies the requirements for qualification, application, testing and handling of
materials required for the application of reinforced concrete coating externally to either bare pipe or
pre-coated pipe for use in pipeline transportation systems for the petroleum and natural gas industries
as defined in ISO 13623.
The external application of concrete is primarily used for the negative buoyancy of pipes used in buried
or submerged pipeline systems and/or for the mechanical prot...view more

This European Standard specifies trivalent chromium based chemical conversion coatings for aluminium and aluminium alloys. It covers the application by bath but also by touch-up. It doesn’t give complete in house process instructions; these shall be given in the manufacturers detailed process instructions.

ISO 20523:2017 specifies classification, designations and short names for carbon based films. These are films in which carbon is the predominant constituent part and which are deposited by physical vapour deposition (PVD) or chemical vapour deposition (CVD) process. This includes amorphous carbon-based films, also called diamond-like carbon films (DLC), as well as CVD diamond films, graphite and polymer-like films. ISO 20523:2017 is applicable to those films which are produced on an industrial s...view more

ISO 20267:2017 specifies a method for measuring the interfacial toughness of thermal spray ceramic coatings at room temperature based on an indentation method. The interfacial toughness is calculated from the mean length of cracks emanating from the corners of the impression induced by a Vickers hardness tester, and it is intended for use with ceramic coatings with a single layer or multilayers. The test procedures proposed in this document are intended for use in an ambient environment. ISO 202...view more

This part of ISO 21809 specifies requirements for field joint coating of seamless or welded steel pipes for pipeline transportation systems in the petroleum and natural gas industries as defined in ISO 13623. This part of ISO 21809 specifies the qualification, application and testing of the corrosion protection coatings applied to steel surfaces left bare after the pipes and fittings (components) are joined by welding.
This part of ISO 21809 does not address additional mechanical protection, th...view more

This International Standard specifies a method for the determination of the film thickness of a fine ceramic film and ceramic coatings by a contact-probe profilometer. The method is suitable for film thicknesses in the range of 10 nm to 10 000 nm.

This International Standard specifies a method for the determination of the thickness of ceramic coatings by a crater-grinding method, which includes the grinding of a spherical cavity and subsequent microscopic examination of the crater.
Because of the uncertainty introduced into the measurement of crater dimensions, the test is not suitable for use where the surface roughness of the coating and/or substrate exceeds 20 % of the coating thickness.

This International Standard specifies a method for measuring the abrasive wear rate of ceramic coatings by means of a micro-scale abrasion wear test based on the well-known crater-grinding technique used for coating thickness determination in ISO 26423[11].
The method can provide data on both coating and substrate wear rates, either by performing two separate tests or by careful analysis of the data from a single test series.
The method can be applied to samples with planar or non-planar surfa...view more

This International Standard describes a method of measuring the fracture strain of ceramic coatings by means of uniaxial tension or compression tests coupled with acoustic emission to monitor the onset of cracking of the coating. Tensile or compressive strains can also be applied by flexure using four-point bending. Measurements can be made in favourable cases at elevated temperatures as well as at room temperature.

This International Standard specifies a method for the qualitative evaluation of the adhesion of ceramic coatings up to 20 µm thick by indentation with a Rockwell diamond indenter. The formation of cracks after indentation may also reveal cohesive failure. The indentations are made with a Rockwell hardness test instrument.
The method described in this International Standard may also be suitable for evaluating the adhesion of metallic coatings.
The test is not suitable for elastic coatings on h...view more

This International Standard describes a method of testing ceramic coatings by scratching with a diamond stylus. During a test, either a constant or increasing force normal to the surface under test is applied to the stylus so as to promote adhesive and/or cohesive failure of the coating-substrate system. The test method is suitable for evaluating ceramic coatings up to a thickness of 20 μm and might also be suitable for evaluating other coating types and thicknesses.
The International Standard ...view more

This International Standard specifies the minimum requirements for surface preparation, materials,
application, inspection and testing of internal coating lining systems that are intended to be applied on
internal surfaces of steel storage tanks of crude oil, hydrocarbons and water for corrosion protection.
It covers both new construction and maintenance works of tank internal coating and lining as well as
the repair of defective and deteriorated systems.
This International Standard also pr...view more

Subsea pipelines (or flow lines) and subsea structures usually need to be thermally
insulated to avoid, for instance, hydrate formation.
Such coatings are commercially available and fall into the following general families:
- Polypropylene
- Polyurethane
- Epoxy and phenolic
- Rubber
At the moment, no national or international standard addresses these types of coatings.
Only company specifications are dealing with that issue. These coatings are more and
more being used for the offshore ...view more