CMAS Infiltration and Mitigation Strategies for Minimizing Premature Degradation Failure of High Temperature Ceramic Coatings in Turbine Engines

Stein, Zachary; Kinzel, Michael P.; Tetard, Laurene; Raghavan, Seetha

doi:10.2514/6.2023-0179

Cited by 4 publications

(1 citation statement)

References 22 publications

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“…Another vital component is to disseminate and share the research the IRES students perform to the scientific community. This is achieved through publishing journal publications [15]- [19], attending and presenting at both domestic and international conferences [20]- [22], participating in an AIAA joint special international session to industry leaders and researchers [23]- [25], through news articles and podcasts discussing their experience with the IRES program and their research, patents and invention disclosures [26], and through organizing and hosting an IRES Symposium Teaming Aerospace Researchers (STARs) symposium filled with collaborators of the IRES program.…”

Section: Broader Impactsmentioning

confidence: 99%

A Case Study Assessing Program Outcomes of an International Research Collaboration between the US and Germany: Developing Students as Global Engineers

Stein,

Swan,

Raghavan

2023 ASEE Annual Conference &Amp; Exposition Proceedings

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Section: Broader Impactsmentioning

confidence: 99%

A Case Study Assessing Program Outcomes of an International Research Collaboration between the US and Germany: Developing Students as Global Engineers

Stein,

Swan,

Raghavan

2023 ASEE Annual Conference &Amp; Exposition Proceedings

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Multilayered Coatings by Thermal Spray for High-Temperature Applications

Henao,

Rivera-Gil,

Poblano-Salas

et al. 2023

Engineering Materials

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Failure behavior study of EB-PVD TBCs under CMAS corrosion and thermal shock cycles

Luo,

Zhang,

Dong

et al. 2024

Mater. Res. Express

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Thermal barrier coatings serve as a key heat-insulating technology for the hot components of aircraft engines, enhancing the engine’s operating temperature, thrust, and efficiency.However, the high-temperature operating environment poses significant challenges to the TBCs, particularly from the corrosion caused by environmental deposits, primarily composed of CaO, MgO, Al2O3, and SiO2, referred to as CMAS, which can lead to premature failure of the TBCs. CMAS corrosion has become a major obstacle, limiting the operating temperature and service life of TBCs. Constructing simulation environments that replicate TBCs’ working conditions and exploring online, non-destructive detection techniques are reliable approaches to studying coatings’ failure, representing both a global research hotspot and a challenge in this field. The paper presents an initial endeavor to establish a simulation experiment for TBCs in aviation-engine within a CMAS environment. Experimental results show that electron beam-physical vapor deposition (EB-PVD) Y2O3-stabilized ZrO2 (YSZ), one of the mainstream TBCs technologies, produced 20% surface spallation after 50 thermal-shock cycles under simulated CMAS corrosion conditions. Testing and analysis of the macroscopic and microscopic structures of the failed samples, combined with SEM, EDS, and XRD findings, revealed significant physical and chemical interactions between the ceramic layer and CMAS deposits, as well as phase transformation within the coatings, leading to substantial alterations in mechanical properties and ultimately causing the failure of EB-PVD YSZ.

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CMAS Infiltration and Mitigation Strategies for Minimizing Premature Degradation Failure of High Temperature Ceramic Coatings in Turbine Engines

Cited by 4 publications

References 22 publications

A Case Study Assessing Program Outcomes of an International Research Collaboration between the US and Germany: Developing Students as Global Engineers

A Case Study Assessing Program Outcomes of an International Research Collaboration between the US and Germany: Developing Students as Global Engineers

Multilayered Coatings by Thermal Spray for High-Temperature Applications

Failure behavior study of EB-PVD TBCs under CMAS corrosion and thermal shock cycles

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