Nickel-Aluminum Powder [-200+400]

Role of Nickel-Aluminum as a Bond Coat

A bond coat serves as the critical interface between the substrate and the top coat. Nickel-Aluminum powders are chosen for their self-bonding capability, which reduces the need for extensive substrate roughening in some applications. When sprayed, the nickel and aluminum react to form nickel aluminides, releasing heat and creating a micro-welded bond. This layer provides a rough, oxidized surface that mechanical top coats can anchor to effectively.

Particle Size and Process Compatibility

The -200+400 mesh designation indicates a powder that passes through a 200-mesh screen (74 microns) and is retained on a 400-mesh screen (37 microns). This medium-fine cut is compatible with multiple thermal spray processes. Combustion flame spray and plasma spray systems typically handle this range well. For HVOF spraying, the particle size must be verified against specific gun model requirements, as some high-velocity systems demand tighter distributions. We recommend discussing your exact equipment with our team to confirm grade suitability.

Selecting the Right Grade

Not all Nickel-Aluminum powders perform identically. The final coating quality depends on the manufacturing process of the powder itself—whether it is a composite, clad, or blended powder—and the precise chemistry ratio. A standard ratio is often 95% Nickel / 5% Aluminum by weight, but variations exist to tailor exothermic reactivity and final hardness. SPA2Z sources grades that aim for consistent lot-to-lot feeding and bond strength. We can provide a certificate of analysis upon request to help you verify the chemistry and particle size distribution before purchase.

About SPA2Z — Nickel-Aluminum Powder Supply

SPA2Z supports industrial buyers and contractors in sourcing Nickel-Aluminum Powder [-200+400] for thermal spray operations. We understand that coating performance starts with raw material consistency. Whether you are qualifying a new bond coat for a production line or replenishing stock for a maintenance project, we facilitate the enquiry process to match you with a suitable powder grade.

Our focus is on practical supply: we offer standard pack options including 5 kg tins, 10 kg tins, and 25 kg pails, and we can discuss bulk packaging on request. We invite you to send us your target chemistry, desired pack size, and spray process details for a tailored quotation.