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New Ablation-Resistant Material Candidate for Hypersonic Applications: Synthesis, Composition, and Oxidation
Victor V Lozanov1, Natalya I Baklanova1, Natalia V Bulina1
1Institute of Solid State Chemistry and Mechanochemistry SB RAS , Kutateladze Street 18 , Novosibirsk 630128 , Russian Federation.
ACS Applied Materials & Interfaces
|March 29, 2018
Summary
Hafnium carbide (HfC) and iridium (Ir) interact at high temperatures, forming a HfIr3 solid solution. This HfIr3 material shows excellent ablation resistance, making it suitable for extreme applications.
Area of Science:
- Materials Science
- Solid-State Chemistry
- High-Temperature Materials
Background:
- Understanding solid-state interactions is crucial for developing advanced materials.
- The HfC-Ir system is of interest for high-temperature applications due to the properties of its constituent elements.
Purpose of the Study:
- To investigate the solid-state interactions in the HfC-Ir system.
- To characterize the resulting phases and their properties.
- To evaluate the potential of HfIr3 for extreme applications.
Main Methods:
- Studied solid-state interactions in the HfC-Ir system across a temperature range of 1000-1600 °C.
- Employed modern analytical techniques for material characterization.
- Evaluated the durability and ablation resistance of the HfIr3-based material.
Main Results:
- Interaction begins at 1000-1100 °C, forming a HfIr3-based substitutional solid solution.
- The homogeneity range of HfIr3±x was determined to be HfIr2.43-HfIr3.36.
- HfIr3 exhibits excellent ablation resistance due to oxygen impermeability and a superalloy-like microstructure.
Conclusions:
- The HfC-Ir system forms a stable HfIr3 solid solution with a defined homogeneity range.
- HfIr3 demonstrates superior durability and ablation resistance under extreme conditions.
- HfIr3 is a highly promising material for demanding, extreme-environment applications.
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