How NiAl Alloy Powder Enhances High-Temperature Wear-Resistant Components

Published by HUAXIAO TECH manufacturer

NiAl (nickel aluminide) alloy powder is a lightweight intermetallic material known for its outstanding oxidation resistance, high melting point, and hardness. These properties make it ideal for applications in aerospace, automotive, and energy industries where thermal and mechanical demands are critical.

High-Temperature Performance and Lightweight Strength

NiAl alloy features a simple B2 crystal structure with strong Ni–Al bonding, resulting in:

• High strength-to-weight ratio

• Excellent thermal conductivity

• Outstanding structural stability up to 1100°C

It offers a unique balance of strength and reduced density, outperforming many conventional high-temperature alloys.

Excellent Oxidation and Corrosion Resistance

The presence of aluminum promotes the formation of a dense Al₂O₃ protective layer, which:

• Prevents rapid oxidation in air and combustion gases

• Enhances service life in harsh environments

• Reduces the need for external coatings

This makes NiAl a preferred choice for hot-section components and thermal barrier bond coats.

Ideal for Additive Manufacturing and Thermal Spraying

HUAXIAO TECH supplies NiAl alloy powder with spherical morphology and low impurity content, optimized for:

• Laser powder bed fusion (LPBF) and electron beam melting (EBM)

• High-velocity oxygen fuel (HVOF) and plasma spraying

• Metal injection molding (MIM) and powder metallurgy sintering

Common Applications

• Bond coats in thermal barrier coating (TBC) systems

• Wear-resistant parts for turbines and engines

• High-temperature structural supports

• Aerospace combustion liners and exhaust components

Key Advantages

• Oxidation resistance at elevated temperatures

• Good thermal shock and corrosion resistance

• Compatibility with multiple powder-based processes

• Lightweight alternative to dense refractory alloys

Frequently Asked Questions (FAQ)

Q1: What is the melting point of NiAl alloy?
A1: The melting point of NiAl is approximately 1638°C, allowing usage in high-heat environments.

Q2: Can NiAl be used in 3D printing?
A2: Yes, it is compatible with LPBF, EBM, and DED additive manufacturing techniques.

Q3: What is the standard particle size range?
A3: HUAXIAO TECH offers particle sizes ranging from 15–53 μm for AM and finer grades for spraying and MIM.

Conclusion

NiAl alloy powder delivers a combination of lightweight performance, oxidation resistance, and high-temperature durability. It is the ideal material for next-generation components requiring thermal efficiency and structural reliability.

Contact HUAXIAO TECH to learn more about custom grades and technical support for NiAl alloy powder.