What Makes TiZeTaNbHf Alloy Powder the Future of Ultra-Refractory Materials

As aerospace, defense, and energy sectors move toward extreme operating conditions, traditional alloys reach their performance limits. TiZeTaNbHf alloy powder—a high-entropy alloy (HEA) with ultra-refractory characteristics—offers an innovative solution for structural applications beyond 1200°C.

High-Entropy Design, High-Temperature Stability

TiZeTaNbHf is a five-element refractory high-entropy alloy composed of titanium, zirconium, tantalum, niobium, and hafnium in near-equimolar ratios. Its structure delivers:

• Excellent phase stability at elevated temperatures

• High melting points above 3000°C

• Outstanding mechanical strength and creep resistance

This composition enables long-term operation in thermally and mechanically demanding systems.

Exceptional Resistance to Thermal and Chemical Degradation

Thanks to its body-centered cubic (BCC) solid solution phase, TiZeTaNbHf powder demonstrates:

• Low thermal conductivity, enabling thermal barrier properties

• High resistance to oxidation and corrosion at ultra-high temperatures

• Microstructural stability under thermal cycling and radiation

These features make it highly reliable for high-stress environments such as rocket engines and gas turbines.

Tailored for Additive Manufacturing

TiZeTaNbHf alloy powder is atomized to produce highly spherical particles with tight PSD control, ensuring:

• Excellent flowability in laser and electron beam additive systems

• Dense, crack-free parts after melting and solidification

• Compatibility with selective laser melting (SLM) and EBM

This makes it an ideal candidate for near-net-shape manufacturing of complex refractory components.

Application Fields

• Rocket nozzles and thruster components

• Hypersonic vehicle heat shields

• High-temperature tooling and dies

• Nuclear and space reactor internals

Benefits Overview

• Thermally stable above 1200°C for continuous operation

• Resistant to oxidation, ablation, and mechanical fatigue

• Ideal for additive manufacturing and advanced processing

• Long service life in harsh, corrosive environments

Frequently Asked Questions (FAQ)

Q1: Why choose TiZeTaNbHf over traditional refractory metals?
A1: It combines the high-temperature properties of multiple elements with enhanced mechanical uniformity, oxidation resistance, and processability.

Q2: Is it weldable or printable with current AM systems?
A2: Yes. It works well with LPBF, EBM, and direct energy deposition (DED) systems using appropriate preheating and scan strategies.

Q3: What particle size ranges are offered?
A3: Standard size is 15–45 μm for AM, with customized ranges available for coating and pressing applications.

Conclusion

TiZeTaNbHf alloy powder represents a new generation of high-entropy refractory materials. Its unmatched thermal, mechanical, and chemical performance opens new possibilities for future aerospace and energy systems.

For technical consultation or customized powder solutions, contact HUAXIAO TECH.