ISO 13123-2011 PDF

Full title and description

St ISO 13123-2011 — Metallic and other inorganic coatings — Test method of cyclic heating for thermal-barrier coatings under temperature gradient. This International Standard specifies a laboratory test method to evaluate the thermal-barrier performance and resistance to cyclic heating of thermal barrier coatings (TBCs) applied to high-temperature components.

Abstract

ISO 13123:2011 defines a cyclic heating test performed under a controlled temperature gradient to assess the behaviour and durability of metallic and other inorganic thermal-barrier coating systems when exposed to repeated thermal loading. The method is intended to reproduce service-like thermal cycles (heating and cooling) and to identify failure modes such as spallation, delamination, cracking and loss of insulation performance.

General information

• Status: Published — confirmed (ISO international standard).
• Publication date: 8 December 2011 (Edition 1, 2011).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 25.220.20 (Surface treatment; metallic and other inorganic coatings).
• Edition / version: Edition 1 (2011).
• Number of pages: 14 (ISO edition).

Scope

The standard applies to laboratory testing of thermal-barrier coatings on components exposed to high temperature service environments. It covers the preparation of specimens, the cyclic heating procedure under a controlled temperature gradient, cycle parameters (temperatures, dwell times, heating/cooling rates), observation and measurement of coating degradation, and the reporting of results. Typical applications include gas-turbine blades and vanes, combustion-chamber liners and other hot-section parts for power-generation turbines, aircraft engines and rocket engines.

Key topics and requirements

• Definition of specimen geometry and preparation requirements for representative coated substrates.
• Specification of test apparatus capable of producing a controlled temperature gradient through the coating/substrate system.
• Parameters for cyclic heating: maximum temperatures, dwell times, heating and cooling rates, and number of cycles (as relevant to application).
• Guidance on instrumentation and temperature measurement (thermocouple placement, calibration).
• Acceptance and rejection criteria: identification and classification of failure modes (spallation, delamination, cracking) and methods to quantify coating damage.
• Requirements for test reporting: test conditions, observations, photographs, measured data and interpretation.
• Notes on reproducibility, safety and comparability of results between laboratories.

Typical use and users

Used by coating and thermal-spray manufacturers, turbine and engine OEMs, materials and failure-analysis laboratories, research organisations developing thermal-barrier systems, qualification and certification bodies, and quality departments performing R&D or routine durability testing for high-temperature components.

Related standards

Standards commonly used alongside ISO 13123 include ISO 14188 (test methods for thermal cycle and thermal shock resistance of TBCs), ISO 18555 (determination of thermal conductivity of thermal-barrier coatings), subsequent or complementary methods addressing CMAS and environmental corrosion (newer test methods) and regional/adopted versions such as EN ISO 13123 / DIN EN ISO 13123.

Keywords

thermal-barrier coating, TBC, cyclic heating test, temperature gradient, spallation, delamination, thermal cycling, thermal spray, turbine blade testing, ISO 13123:2011, coatings testing.

FAQ

Q: What is this standard?

A: ISO 13123:2011 is an international test-method standard that specifies a cyclic heating procedure under a temperature gradient to evaluate the durability and failure behaviour of thermal-barrier coatings on high-temperature components.

Q: What does it cover?

A: It covers specimen preparation, test apparatus and setup, cyclic heating parameters (temperatures, dwell times, heating/cooling rates), measurement and classification of coating failures, and required test reporting to enable reproducible evaluation of coating cyclic-heat resistance.

Q: Who typically uses it?

A: Coating manufacturers, gas-turbine and aero-engine OEMs, materials testing and research laboratories, and certification/quality organisations involved in assessment and qualification of thermal-barrier coating systems.

Q: Is it current or superseded?

A: ISO 13123 was published in December 2011 (Edition 1) and remains an ISO international standard. Users should check with the national or international standards body for any later revisions, related new methods, or confirmed/withdrawn status before applying the method in formal qualification programs.

Q: Is it part of a series?

A: It is part of the family of ISO documents covering metallic and other inorganic coatings managed by ISO/TC 107; related documents address other TBC test methods (for example thermal-cycle and thermal-shock tests), thermal property determination and environmental-corrosion test methods.

Q: What are the key keywords?

A: Thermal-barrier coating, cyclic heating, temperature gradient, spallation, delamination, thermal cycling, TBC test method, coatings durability.