Iowa Patent of the Month – January 2021
Cold spray is a technique that’s used for coating processes. It can be used in coating substrates, medical implants, and in thermal barrier coating. It’s used in a variety of industries, such as automotive, medical, electronics, aerospace, among others. Cold spray uses gas to blow the raw, unprocessed feedstock material (usually in the form of solid powders) at the substrate at high speeds. The intense impact causes the powder to bond with the substrate. Delavan, Inc, has developed an improved cold spray technique.
Cold spray feedstock comprise multiple globule bodies. These bodies are made of particles that are bonded to one another. Devalan’s innovative cold-spray process uses heat to strengthen the globules, helping them to maintain their integrity and shape when used in cold spray. The company has also shaped the globules so they’re spherical by placing them in a mold or by using a free-gravity technique. Similar to adding heat, shaping the globules strengthens them and also provides increased coverage to the substrate for improved substrate bonding.
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