Development of Test Stand for an Erosion Test of Abradable Ceramic Coating for Turbine Shroud

Cheulwoo Baek; Siwoo Lee; Seunghee Kim

doi:10.6108/KSPE.2025.29.1.001

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2025 Vol.29, Issue 1 Next Page

RESEARCH PAPERS

Development of Test Stand for an Erosion Test of Abradable Ceramic Coating for Turbine Shroud 터빈 슈라우드 마모성 세라믹코팅 상온 내침식 시험장치 개발

28 February 2025. pp. 1-8

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Abstract

In high performance and highly efficient aviation gas turbine engines, abradable ceramic coating applied to control the gap sealing between the turbine shroud and the blade tip has certain porosity for making an optimal gap intentionally. However, lowered coating surface hardness due to the porosity is weak to erosive particles that may occur inside or outside the engine during operation and this unintentional wear can lead performance degradation and localized flow instability. This paper describes the design and manufacturing results of a test stand for ASTM G76 including powder injection system, test stand, and data acquisition system that can evaluate the erosion resistance of the abradable coating surface.

Keywords

Gas Turbine Engine

Turbine Inlet Temperature

Gap Sealing Control

Abradable Ceramic Coating

Erosion Test

항공용 가스터빈 엔진의 고성능, 고효율화와 관련하여 터빈 슈라우드와 블레이드 팁 사이 간극제어를 위해 적용된 마모성 세라믹코팅은 의도적인 마모를 위해서 일정한 기공율을 가지게 되는데, 기공에 의해 낮아진 코팅 경도로 인해 운용 간 엔진 내ㆍ외부에서 발생 가능한 침식 입자에 의해 추가적인 마모가 발생해 엔진성능이 저하되고, 국부적인 유동 불안정성을 유발할 수 있다. 본 논문은 이러한 마모성 세라믹코팅의 코팅면의 내침식 특성을 평가할 수 있는 시험장치(ASTM G76)의 분말 분사시스템, 테스트 스탠드 및 제어/DAS 시스템에 관한 설계 및 제작 결과에 대해 기재하였다.

키워드

가스터빈엔진

TIT, 터빈 입구 온도

간극제어

마모성 세라믹코팅

내침식 시험

References

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Information

Publisher :The Korean Society of Propulsion Engineers
Publisher(Ko) :한국추진공학회
Journal Title :Journal of the Korean Society of Propulsion Engineers
Journal Title(Ko) :한국추진공학회지
Volume : 29
No :1
Pages :1-8
Received Date : 2024-07-22
Revised Date : 2025-01-01
Accepted Date : 2025-01-02
DOI :https://doi.org/10.6108/KSPE.2025.29.1.001

Journal of the Korean Society of Propulsion Engineers ISSN:1226-6027(Print) 2288-4548(Online) 한국추진공학회지

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