A method for analyzing electrode ablation of a gas switch based on plasma-electrode interaction
By establishing a multiphase flow electrode ablation model that considers plasma-electrode interaction, the problem of inaccurate electrode ablation models in existing technologies is solved, enabling quantitative sorting and rapid screening of electrode materials and providing an efficient assessment of ablation resistance constants.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- HEFEI UNIV OF TECH
- Filing Date
- 2026-04-24
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies fail to fully consider the complexity of plasma-electrode interactions and the multiphase flow characteristics of electrode ablation, resulting in large discrepancies between the simulation results of electrode ablation models and actual conditions. There is a lack of unified ablation resistance evaluation indicators, making it difficult to quickly screen high-performance electrode materials.
A multiphase flow electrode ablation model based on plasma-electrode interaction was established. Through numerical simulation and theoretical derivation, the effects of particle flows such as electron thermal field emission, ion bombardment, atomic evaporation and electron backflow on the electrode surface were considered. An ablation resistance constant was proposed to quantitatively evaluate the ablation resistance of the electrode material.
It provides a quantitative relationship between electrode ablation degree and ion number density and electron temperature, shortens the electrode material evaluation cycle, reduces testing costs, enables rapid screening of high-performance electrode materials, and provides quantitative evaluation indicators with clear physical meaning.
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Figure CN122410286A_ABST