What is ISO 22680 about?
ISO 22680 specifies a method for measuring the reproducible linear thermal expansion coefficient of ceramic topcoats (TCs) for thermal barrier coatings (TBCs) up to 1 300 °C. It specifies technicalities such as terms, definitions, the principle, apparatus for measuring the linear thermal expansion coefficient, preparing the specimen, measuring procedure, and test reports for measuring the linear thermal expansion coefficient of thermal barrier coatings.
Although the linear thermal expansion coefficient is an important property of thermal barrier coatings, the existing International Standard describes only a method for measuring this parameter for monolithic ceramics.
ISO 22680 also specifies a method for measuring the linear thermal expansion coefficient of the ceramic topcoat for thermal barrier coating.
Who is ISO 22680 for?
ISO 22680 on thermal barrier coatings is applicable to:
- Power-generation gas turbines thermal power plants
- Aero-engines
- Aerospace
- Automotive manufacturers
- Nickel or cobalt-based super alloys
- Combustors, blades, and vanes of power-generation gas turbines in thermal power plants
Why should you use ISO 22680?
To survive deformation in high-temperature operations, the reproducible linear thermal expansion coefficient of thermal barrier coatings must be determined.
ISO 22680 specifies a method for determining the linear thermal expansion coefficient of thermal barrier coatings to access their performance. It helps you to safeguard metallic components for extended periods of time at high elevated temperatures by using thermal barrier coatings that can withstand a significant temperature differential between load-bearing alloys and coating surfaces.
ISO 22680 recommends testing the performance of thermal barrier coatings that allow high-temperature operation by protecting these components and therefore prolonging their lifespan.