A device and method for detecting the heat insulation capability of a thermal barrier coating

By combining infrared thermometers and approximation methods, the problem of large detection errors in the thermal barrier coating thermal insulation performance of existing technologies has been solved, achieving high-precision and low-cost detection results.

CN115711911BActive Publication Date: 2026-07-21KUNMING UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
KUNMING UNIV OF SCI & TECH
Filing Date
2022-11-04
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

Existing technologies make it difficult to accurately measure the temperature at the interface between the thermal barrier coating and the alloy substrate, resulting in large errors in the testing of the thermal insulation performance of the thermal barrier coating and high costs.

Method used

An infrared thermometer combined with an approximation method is used to calculate the thermal insulation performance of a thermal barrier coating by measuring the temperature difference between the two sides of the substrate of a thermal barrier coating structure and gradually approximating the temperature difference between the two sides of the substrate of the thermal barrier coating structure.

Benefits of technology

This technology enables high-precision testing of the thermal insulation performance of thermal barrier coatings, reducing testing costs, minimizing errors, and improving the accuracy of test results.

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Abstract

The present application relates to the technical field of detection of high-temperature structural member thermal barrier coating, and specifically discloses a kind of thermal barrier coating heat insulation capacity detection method, comprising S1, the structural member with thermal barrier coating is tested under service condition;S2, under the same service condition, the temperature of the heat source side of the structural member without thermal barrier coating is measured, the temperature of cooling side, the temperature difference of the heat source side of the structural member without thermal barrier coating is gradually approached to the temperature difference of the two sides of the substrate in the structural member with thermal barrier coating using approximation method;S3, the temperature difference of the heat source side temperature T a1 and the temperature of cooling side T a5 of the structural member with thermal barrier coating, subtract the temperature difference of the two sides of the substrate in the structural member with thermal barrier coating obtained using approximation method to obtain the heat insulation performance of thermal barrier coating.The present application can truly study the heat insulation performance of thermal barrier coating of high-temperature structural member under super-high-temperature environment, the heat insulation performance measurement is accurate, error is small, detection has no limitation, and experimental cost is low.
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