NPFC - MIL-DTL-32495
POWDERS FOR COLD SPRAY DEPOSITION
|Publication Date:||12 April 2019|
This specification covers requirements intended for use in the procurement of powders used to produce deposits utilizing a cold spray materials deposition process for the purpose of parts repair, coatings, or fabrication of near-net shaped parts. Cold spray is a process whereby metal powder particles are utilized to form a deposit by means of ballistic impingement upon a substrate in order to produce thin coatings, thick deposits, or near-net shaped parts. This cold spray process is explained in the manufacturing process standard MIL-STD-3021, "Materials Deposition, Cold Spray". The base document of MIL-DTL-32495 contained requirements for Aluminum powders only. This new Revision (A) expands the list of powders to include additional materials beyond aluminum.
The powders specified herein are intended to be used with the cold spray process as specified in MIL-STD-3021, entitled: "Materials Deposition, Cold Spray". This standard (MIL-STD-3021)... View More
The powders specified herein are intended to be used with the cold spray process as specified in MIL-STD-3021, entitled: "Materials Deposition, Cold Spray". This standard (MIL-STD-3021) establishes the manufacturing controls for powders that are utilized for the cold spray process for repairing, coating, and the fabrication of near net shape components, such as, Additive Manufacturing purposes. Cold spray is a low-temperature, solid state consolidation process, whereby metal or combinations of metallic and non-metallic particles are injected into a highvelocity gas stream and are directed upon a suitable substrate where they impact and consolidate to form a coating or near-net shape components, without melting. This specification (MIL-DTL-32495A) outlines the requirements for chemical composition, sprayability (see 126.96.36.199), overall quality, and conformance requirements for particle size distribution for powders that are utilized by the cold spray process to; (1) produce coatings on metallic and/or nonmetallic substrates including but not limited to steel, aluminum, ceramics and polymers, (2) produce deposits for dimensional restoration on metallic and/or nonmetallic substrates, or (3) produce near net shaped parts.View Less