OXIDATION OF TBC COATED NICKEL BASED SUPERALLOYS AND GAMMA TITANIUM ALUMINIDES FOR LAND-BASED ENGINES

OXIDATION OF TBC COATED NICKEL BASED SUPERALLOYS AND GAMMA TITANIUM ALUMINIDES FOR LAND-BASED ENGINES

Abstract:
The continuous demand for enhanced performance and efficiency in land-based engines has led to the development of advanced materials capable of withstanding high temperatures and harsh environments. Nickel-based superalloys and gamma titanium aluminides have emerged as promising candidates due to their excellent mechanical properties and high-temperature oxidation resistance. This abstract aims to provide an overview of the oxidation behavior of these materials when coated with thermal barrier coatings (TBCs) for land-based engine applications.

Nickel-based superalloys exhibit exceptional strength, creep resistance, and thermal stability, making them ideal for gas turbine applications. However, their oxidation resistance can be further improved through the application of TBCs. TBCs are multilayered coatings typically consisting of a metallic bond coat, usually composed of nickel or cobalt-based alloys, and a ceramic topcoat, commonly yttria-stabilized zirconia (YSZ). The TBC system acts as a thermal insulator, reducing the substrate’s exposure to high temperatures and protecting it from oxidation. This abstract will discuss the oxidation mechanisms and performance of TBC-coated nickel-based superalloys under land-based engine operating conditions.

Gamma titanium aluminides (γ-TiAl) have also garnered significant attention due to their lightweight, high-temperature strength, and excellent corrosion resistance, making them viable candidates for land-based engine applications. However, γ-TiAl alloys are susceptible to oxidation at elevated temperatures. The application of TBCs on γ-TiAl substrates can provide a protective barrier against oxidation, thereby improving their overall durability and service life. This abstract will highlight the oxidation behavior and the role of TBCs in enhancing the high-temperature oxidation resistance of γ-TiAl alloys for land-based engine applications.

In conclusion, the oxidation of TBC-coated nickel-based superalloys and γ-TiAl alloys for land-based engines is a critical aspect to consider for ensuring the long-term reliability and performance of these materials. By understanding the oxidation mechanisms, researchers and engineers can develop strategies to enhance the oxidation resistance of these materials, optimize TBC designs, and improve the efficiency and durability of land-based engines.

OXIDATION OF TBC COATED NICKEL BASED SUPERALLOYS AND GAMMA TITANIUM ALUMINIDES FOR LAND-BASED ENGINES, GET MORE MATERIALS SCIENCE AND ENGINEERING

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