A stress corrosion crack initiation simulation device and method based on an oxide scale-primer-coating debonding interface controllable structure
By constructing a simulation device with a controllable structure of the debonding interface between the oxide scale, primer, and coating, the problems of the coating effect and uncontrollable interface in the existing technology were solved, and controllable simulation and repeatable experiments of stress corrosion crack initiation were realized.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- INST OF METAL RESEARCH - CHINESE ACAD OF SCI
- Filing Date
- 2026-06-10
- Publication Date
- 2026-07-17
AI Technical Summary
Existing stress corrosion testing methods fail to consider the influence of external coatings on corrosion of metallic materials, making it difficult to construct localized interfacial corrosion environments, resulting in uncontrollable interfacial structures and poor test repeatability.
A simulation device based on a controllable structure of the debonding interface of oxide scale-primer-coating is designed, including a loading module, a micro-corrosion environment control module, and an interface structure simulation module. By constructing a preset debonding cavity and adjustable oxide scale and primer layers, combined with micro-corrosion environment control, the initiation of stress corrosion cracks can be simulated in a controllable manner.
It enables controllable simulation of stress corrosion crack initiation, improves the repeatability and comparability of experiments, reflects the actual service environment, and is applicable to specimens of different materials and sizes.
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Figure CN122409347A_ABST