孔隙结构对大气等离子喷涂热障涂层抗侵蚀性能影响的数值研究

邸娟; 陈高飞; 颜晓江; 刘峰

doi:10.7652/xjtuxb202201013

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孔隙结构对大气等离子喷涂热障涂层抗侵蚀性能影响的数值研究

更新时间：2025-05-08

- 孔隙结构对大气等离子喷涂热障涂层抗侵蚀性能影响的数值研究
- Numerical Study on Effect of Pore Structure on Erosion Resistance of Atmospheric Plasma Thermal Barrier Coating
- 西安交通大学学报 2022年56卷第1期页码：113-119
- 作者机构：
  
  太原科技大学机械工程学院,太原,030024
- 作者简介：
- 基金信息：
  
  : 2021-06-02。作者简介: 邸娟(1988—),女,讲师,硕士生导师。基金项目: 国家自然科学基金青年基金资助项目(52002265);山西省高等学校科技创新资助项目(2020L0346);山西省优秀博士毕业生来晋工作奖励资助基金资助项目(20202020)
- DOI：10.7652/xjtuxb202201013
  中图分类号： TK47
- 网络首发：2022-01-10，
  
  纸质出版：2022
- 稿件说明：
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邸娟, 陈高飞, 颜晓江, 等. 孔隙结构对大气等离子喷涂热障涂层抗侵蚀性能影响的数值研究[J]. 西安交通大学学报, 2022,56(1):113-119.

Numerical Study on Effect of Pore Structure on Erosion Resistance of Atmospheric Plasma Thermal Barrier Coating[J]. 2022, 56(1): 113-119.
邸娟, 陈高飞, 颜晓江, 等. 孔隙结构对大气等离子喷涂热障涂层抗侵蚀性能影响的数值研究[J]. 西安交通大学学报, 2022,56(1):113-119. DOI： 10.7652/xjtuxb202201013.

Numerical Study on Effect of Pore Structure on Erosion Resistance of Atmospheric Plasma Thermal Barrier Coating[J]. 2022, 56(1): 113-119. DOI： 10.7652/xjtuxb202201013.

摘要

为探索涂层内部缺陷结构对大气等离子喷涂热障涂层(APS-TBCs)抗冲蚀的影响

建立了含有大量随机分布圆形孔隙的大气等离子热障涂层模型。基于显式动力学算法并结合脆性断裂准则

模拟了粒子冲击作用下陶瓷层内裂纹扩展、冲蚀破碎等失效现象

获取了陶瓷层内孔隙半径(0.1～5 μm)、孔隙率(0～20%)等关键参数与冲蚀质量之间的内在关系。仿真结果表明

圆形孔隙结构会使热障涂层冲蚀性能发生改变; 对于某特定孔隙率存在最优孔隙半径

使其抗冲蚀性优于无孔隙结构的热障涂层; 对于某特定孔隙半径

随着孔隙率的增加涂层冲蚀质量逐渐趋于稳定。此项研究可为预测涂层服役寿命、改进等离子喷涂制备工艺、提高其抗冲蚀能力提供一定的参考。

Abstract

In order to explore the influence of internal defect structure on erosion resistance of atmospheric plasma thermal barrier coatings(APS-TBCs)

a coating model containing a large number of randomly distributed circular pores was established. Based on the explicit dynamic algorithm and the brittle cracking criterion

the failure phenomena of crack propagation and erosion cracking in the ceramic layer under particle impact were simulated. The relationship between the key parameters

such as pore radius(0.1-5 μm)and porosity(0-20%)

and erosive mass loss in the ceramic layer was obtained. Simulation results show that the circular pore structure will change the erosion performance of thermal barrier coatings. For a specific porosity

there is an optimal pore radius

which makes erosion resistance better than that of thermal barrier coatings without pore structure. For a specific pore radius

the erosion mass of the coating gradually tends to be stable with the increase of porosity. This study may provide a reference for predicting service life of the coating

improving the plasma spraying preparation process and enhancing its erosion resistance.

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Keywords

references

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