Solution

Multifunctional Ceramics for Aerospace Applications

Comprehensive characterization of MgO-Al2O3, MgO-CaZrO3, and YSZ ceramic composites for thermal protection systems, thermal barrier coatings, and plasma actuators.

aerospaceceramicsthermal-protectionplasma-actuatorsmultifunctional 1 min read

The Challenge

Next-generation aerospace applications demand ceramics that perform multiple functions simultaneously, thermal protection during atmospheric re-entry, thermal barrier coatings for engine components, and dielectric properties for plasma actuator flow control. Developing these multifunctional materials requires understanding how microstructure correlates with mechanical, thermal, and electrical performance across different ceramic compositions.

The Solution

This PhD research used GrindoSonic to characterize three ceramic composite systems, MgO-Al2O3, MgO-CaZrO3, and YSZ, through a systematic four-stage manufacturing process encompassing material preparation, processing, sintering, and finishing. The non-destructive elastic modulus measurements on rectangular plates, bars, and disc specimens enabled tracking property evolution through each stage while establishing correlations between mechanical performance and microstructural features.

Key takeaway: Tracking elastic modulus at each manufacturing stage established predictive correlations between processing parameters and the mechanical, thermal, and electrical performance required for multifunctional aerospace ceramics.

Results

The comprehensive characterization revealed how processing parameters influence multifunctional performance in aerospace ceramics. By correlating elastic modulus with microstructural, thermal, and electrical properties, the research established predictive relationships for optimizing ceramic compositions. The findings demonstrate that GrindoSonic enables efficient screening of advanced ceramics destined for thermal protection systems, thermal barrier coatings, and plasma actuator applications.

Source

Multifunctional Advanced Ceramics for Aeronautical and Aerospace Applications: Study of MgO Al2O3, MgO CaZrO3, and YSZ Ceramic Composites

KO Shvydyuk

2022, ProQuest Dissertations (PhD Thesis)

The premise that materials permeate all aspects of our day-a-day lives is well established. The relentless pursuit for increased performance in aeronautical and aerospace industries over the last decades has provided a solid driving force for the study, research, and investigation of advanced ceramics for numerous future investments. The advanced ceramics field is believed to be an enabling technology with the potential to deliver high-value contributions for meeting both future needs and challenges. Moreover, the advanced ceramics industry is quite distinctive due to its high diversity and interdisciplinary nature that encompasses an engaging number of different processing methodologies and a variety of applications. In this sense, this dissertation project focused to perform an extensive and comprehensive literature review research, in addition to further selection, fabrication, testing, and analysis of MgO Al2O3, MgO CaZrO3, and YSZ ceramic materials which are intended to satisfy the condition of advanced multifunctional ceramic in the aeronautical and aerospace fields. Within this framework of thought, thermal protection systems, thermal barrier coatings, and dielectric barrier discharge plasma actuator applications were perceived and adopted as a jumping-off point. A step–by–step approach was adopted for the experimental procedure. More precisely, initially, ceramic composite MgO Al2O3, MgO CaZrO3, and YSZ samples were manufactured through a four stages process, i.e., material preparation, processing, sintering, and finishing. After the rectangular plates, bars, and disc specimens were obtained for the three referred compositions, the in-depth study under the microstructural, physical, mechanical, thermal, and electrical characterization followed. Ultimately, many fine ceramics are multifunctional and therefore predestined to solve the forthcoming technological and engineering challenges. It is believed that ceramics offer an enormous potential to be exploited with the knowledge of material science, i.e., through correlations between microstructural, physical, mechanical, thermal, and electrical features.

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Frequently Asked Questions

Which ceramic compositions were studied for aerospace multifunctional applications?

Three ceramic composite systems were investigated: MgO-Al2O3, MgO-CaZrO3, and yttria-stabilized zirconia (YSZ). Each was manufactured through a four-stage process, material preparation, processing, sintering, and finishing, and characterized across microstructural, physical, mechanical, thermal, and electrical properties.

What aerospace applications do these advanced ceramics target?

The ceramics target three distinct aerospace applications: thermal protection systems for atmospheric re-entry vehicles, thermal barrier coatings for engine components, and dielectric barrier discharge (DBD) plasma actuators for aerodynamic flow control. The multifunctional nature of these ceramics means a single material system can potentially serve multiple roles.

How does GrindoSonic support aerospace ceramic development?

GrindoSonic provides non-destructive elastic modulus measurements on rectangular plates, bars, and disc specimens at each manufacturing stage. This enables tracking of property evolution through preparation, processing, sintering, and finishing while establishing correlations between mechanical performance and microstructural, thermal, and electrical features.

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