Great Question: A Manufacturing Podcast Put On a Coat, It’s Getting Hotter (American Machinist)
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Dec 11, 2025 Explore the innovative dual-layer metallic coating designed for jet engines, boosting performance under extreme conditions. Discover the journey from product design to metallurgy, emphasizing investment casting's role in creating complex, high-performance parts. Learn about high-entropy alloys, which promise greater fuel efficiency and lower maintenance costs. Hear about groundbreaking tests proving the effectiveness of boron-silicon coatings and their potential impact on aerospace and energy sectors.
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Investment Casting Enables High-Performance Blades
- Investment casting yields single-crystal turbine blades that provide exceptional creep resistance for jet engines.
- Robert Brooks links casting precision directly to high-temperature aerospace performance and durability.
Nickel Alloys Hit A Temperature Ceiling
- Nickel-based superalloys like Inconel soften around 1,100°C, limiting further efficiency gains.
- Pushing beyond this temperature requires alternative alloys or protective strategies to reduce fuel burn.
High-Entropy Alloys Offer New Thermal Capabilities
- High-entropy alloys combine multiple elements to gain unique properties like higher melting points and strength.
- The Ti–Ta–Nb–Mo–Zr alloy (TITANBMOZR) offers lightness, corrosion resistance, ductility, and higher temperature tolerance.