EFFECT OF THERMAL GRADIENT ON THE THROUGH-THICKNESS THERMAL CONDUCTIVITY OF PLASMA-SPRAYED TBCS

机译：热梯度对等离子喷涂TBCS通孔厚度热导率的影响

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The harsh thermal environment in gas turbines, including elevated temperatures and high heat fluxes, induces significant thermal gradients in ceramic thermal barrier coatings (TBCs), which are used to protect metallic components. However, the thermal conductivity of plasma-sprayed TBC increases with exposure at high temperatures mainly due to sintering phenomena and possible phase transformation, resulting in potential thermal runaway issues. An analytical thermal model, as well as coating thermal conductivity data which are experimentally obtained, are used to determine the coating through-thickness temperature profile and effective thermal conductivity under gradient conditions at high temperatures. High heat flux rig tests are then performed on TBCs to evaluate coating thermal behavior under temperature gradient closed to service conditions. This combined approach provides a new sintering model and allows for assessment of temperature gradient effects on the thermal performance of plasma-sprayed TBCs.

机译：燃气轮机的恶劣热环境，包括高温和高热通量，会在用于保护金属组件的陶瓷热障涂层（TBC）中引起明显的热梯度。但是，等离子喷涂的TBC的热导率随高温暴露而增加，这主要归因于烧结现象和可能的相变，从而导致潜在的热失控问题。通过分析获得的热分析模型以及通过实验获得的涂层导热系数数据，可确定高温条件下梯度条件下的涂层贯穿厚度温度曲线和有效导热系数。然后在TBC上进行高热通量试验，以评估在接近使用条件的温度梯度下涂层的热性能。这种组合方法提供了一种新的烧结模型，并允许评估温度梯度对等离子喷涂TBC的热性能的影响。

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《Advanced ceramic coatings and interfaces V》|2010年|p.75-86|共12页
会议地点 Daytona Beach FL(US);Daytona Beach FL(US)
作者
Yang Tan; Jon Longtin; Sanjay Sampath; Dongming Zhu;
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作者单位

Center for Thermal Spray Research, Stony Brook University Stony Brook, New York, USA;

rnCenter for Thermal Spray Research, Stony Brook University Stony Brook, New York, USA;

rnCenter for Thermal Spray Research, Stony Brook University Stony Brook, New York, USA;

rnNASA Glenn Research Center Cleveland, Ohio, USA;

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正文语种 eng
中图分类陶瓷工业;
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专利

1. EFFECT OF THERMAL GRADIENT ON THE THROUGH-THICKNESS THERMAL CONDUCTIVITY OF PLASMA-SPRAYED TBCS [J] . Yang Tan, Jon Longtin, Sanjay Sampath, Ceramic Engineering and Science Proceedings . 2010,第3期

机译：热梯度对等离子喷涂TBCS通孔厚度导热率的影响
2. Through-thickness dependence of in-plane cracking behavior in plasma-sprayed thermal barrier coatings [J] . Zhehua Zhang, J. Kameda, S. Sakurai, Metallurgical and Materials Transactions A . 2005,第7期

机译：等离子喷涂热障涂层中面内裂纹行为的全厚度依赖性
3. Through-Thickness Dependence of In-Plane Cracking Behavior in Plasma-Sprayed Thermal Earner Coatings [J] . ZHEHUA ZHANG, J. KAMEDA, S. SAKURAI Metallurgical and Materials Transactions, A. Physical Metallurgy and Materials Science . 2005,第7期

机译：等离子喷涂热载体涂层的平面内裂纹行为的全厚度依赖性
4. EFFECT OF THERMAL GRADIENT ON THE THROUGH-THICKNESS THERMAL CONDUCTIVITY OF PLASMA-SPRAYED TBCS [C] . Yang Tan, Jon Longtin, Sanjay Sampath, International conference on advanced ceramics and composites . 2010

机译：热梯度对等离子体喷涂TBC的贯穿厚度导热率的影响
5. Methods to characterize and enhance the through-thickness thermal conductivity of three dimensional polymer composites. [D] . Yu, Hang. 2015

机译：表征和增强三维聚合物复合材料的全厚度导热性的方法。
6. Microstructure Dependence of Effective Thermal Conductivity of EB-PVD TBCs [O] . Shi-Yi Qiu, Chen-Wu Wu, Chen-Guang Huang, 2021

机译：EB-PVD TBCs有效热导率的微观结构依赖性
7. 3D characterization of porosity in an air plasma-sprayed thermal barrier coating and its effect on thermal conductivity [O] . Xun Zhang, Justyna Kulczyk-Malecka, James Carr, 2018

机译：空气等离子体喷射热阻挡涂层孔隙率的三维表征及其对导热率的影响

EFFECT OF THERMAL GRADIENT ON THE THROUGH-THICKNESS THERMAL CONDUCTIVITY OF PLASMA-SPRAYED TBCS

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