GB/T 42259-2022Metallic and other inorganic coatings - Test methods for measuring thermal cycle resistance and thermal shock resistance for thermal barrier coatings (English PDF)
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Issued by
State Administration for Market Regulation, China National Standardization Administration
Level / Type
National · Recommended
Issue date
December 30, 2022
Implementation date
April 1, 2023
Scope
GB/T 42259-2022 (Metallic and other inorganic coatings - Test methods for measuring thermal cycle resistance and thermal shock resistance for thermal barrier coatings) is available as an English-translated PDF.
GB/T 42259-2022 is the Chinese standard "Metallic and other inorganic coatings - Test methods for measuring thermal cycle resistance and thermal shock resistance for thermal barrier coatings".
Its scope clause reads: This document describes two test methods for thermal barrier coatings, using a steady-state cyclic heating and cooling method to test the thermal cycle resistance, and using a heated Thermal shock resistance is tested by heat and chill methods.
This document is used to evaluate the durability of thermal barrier coatings under thermal strain. This document is suitable for screening thermal barrier coating systems including materials and processing techniques, and is not suitable for controlling thermal spraying processes. Its clauses include terms and definitions.
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Document preview — GB/T 42259-2022
National Standard of the People's Republic of China
- ICS
- 25.220.20
- Classification
- A 29
Issued by: State Administration for Market Regulation, China National Standardization Administration
Contents
- Preface
- 1 Scope
- 2 Normative references
- 3 Terms and Definitions
- 4 Principle
- 5 Test method
- 5.1 General
- 5.2 Test method for heat cycle performance
- 5.3 Test method for thermal shock resistance
- 6 Test report
- 6.1 General
- 6.2 Heat cycle performance test report
- 6.3 Thermal Shock Resistance Test Report
1 Scope
This document describes two test methods for thermal barrier coatings, using a steady-state cyclic heating and cooling method to test the thermal cycle resistance, and using a heated
Thermal shock resistance is tested by heat and chill methods.
This document is used to evaluate the durability of thermal barrier coatings under thermal strain.
This document is suitable for screening thermal barrier coating systems including materials and processing techniques, and is not suitable for controlling thermal spraying processes.
2 Normative references
The contents of the following documents constitute the essential provisions of this document through normative references in the text. Among them, dated references
For documents, only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to this document.
ISO 14232 Thermal spraying powder composition and supply technical conditions (Thermalspraying-Powders-Composition
Note. GB/T 19356-2003 Thermal spraying powder composition and technical supply conditions (ISO 14232.2000, MOD) strength)
Note. GB/T 8642-2002 Determination of thermal spray tensile bond strength (ISO 14916.1999, MOD)
3 Terms and Definitions
The following terms and definitions apply to this document.
3.1
A two-layer structural coating consisting of a metal bond layer and an oxide ceramic topcoat designed to reduce heat transfer from the ceramic topcoat to the substrate.
NOTE. Thermally grown oxide (TGO) will develop on top of the bond coat when the thermal barrier coating is in service at high temperatures. Typical substrate materials are nickel-based superalloys material. As shown in Figure 1, the preparation method adopts physical vapor deposition, chemical vapor deposition or thermal spraying process, such as plasma spraying and high-velocity flame coating.
Flame spraying (HVOF), the spraying powder material complies with the provisions of the corresponding part of ISO 14232. […]
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 30 pages — is available in the English PDF.
Referenced standards
Normative references
- GB/T 19356-2003Thermal spraying -- Powders -- Composition and technical supply conditions
- GB/T 8642-2002Thermal spraying - Determinaton of tensile adhesive strength
ISO 14232 · ISO 14232.2000 · ISO 14916.1999
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