Effects of Various Air Plasma Spraying Processes on the Spraying Power and Bond Strength of Yb2Si2O7/Si-HfO2 Environmental Barrier Coatings

Li, Kaibin; Wang, Weize; Yang, Shilong; Liu, Yangguang; Li, Hongchen; Zhang, Wenkang; Wang, Changliang; Du, Xiuxin

doi:10.31399/asm.cp.itsc2025p0015

Effects of Various Air Plasma Spraying Processes on the Spraying Power and Bond Strength of Yb₂Si₂O₇/Si-HfO₂ Environmental Barrier Coatings

Kaibin Li;

Kaibin Li

Ministry of Education, East China University of Science and Technology

Shanghai, China

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Weize Wang;

Weize Wang

Ministry of Education, East China University of Science and Technology

Shanghai, China

Shanghai Institute of Aircraft Mechanics and Control

Shanghai 200092, China

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Shilong Yang;

Shilong Yang

Ministry of Education, East China University of Science and Technology

Shanghai, China

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Yangguang Liu;

Yangguang Liu

Ministry of Education, East China University of Science and Technology

Shanghai, China

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Hongchen Li;

Hongchen Li

Ministry of Education, East China University of Science and Technology

Shanghai, China

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Wenkang Zhang;

Wenkang Zhang

Ministry of Education, East China University of Science and Technology

Shanghai, China

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Changliang Wang;

Changliang Wang

AECC Beijing Institution of Aeronautical Materials

Beijing, China

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Xiuxin Du

AECC Beijing Institution of Aeronautical Materials

Beijing, China

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Paper No: itsc2025p0015, pp. 15-22; 8 pages

https://doi.org/10.31399/asm.cp.itsc2025p0015

Published Online: May 05 2025

Abstract

In this study, nine coating systems of Yb₂Si₂O₇/Si-HfO₂ EBCs with varying spraying process parameters were deposited on silicon carbide (SiC) substrates using the air plasma spraying (APS) process and an orthogonal experimental method. The effects of variations in spraying distance, current, and hydrogen flow rate on spraying power and coating bond strength were investigated.

air plasma spraying, bond strength, environmental barrier coatings, hydrogen, flow rate, ytterbium disilicate, silicon carbide, tensile stress

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Effects of Various Air Plasma Spraying Processes on the Spraying Power and Bond Strength of Yb₂Si₂O₇/Si-HfO₂ Environmental Barrier Coatings

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