METHOD FOR PREPARING FERRITE/REDUCING METAL COMPOSITE PARTICLES AND METHOD FOR PREPARING HIGH TEMPERATURE RESISTANT STEALTH COATING BASED ON 3D LASER PRINTING
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United States of America Patent
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Feb 25, 2021
app pub date -
Jul 28, 2020
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Aug 21, 2019
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Abstract
The present invention relates to a method for preparing ferrite/reducing metal composite particles and a method for preparing a high temperature resistant stealth coating based on 3D laser printing, belonging to the technical field of preparation of absorbing coatings. The present invention aims to solve the problems that an existing high-temperature absorbing coating has insufficient coating/matrix bonding force, the microstructure of the coating is difficult to control, and electromagnetic properties cannot be ensured. In the present invention, nano ferrite powder and nano reducing metal powder are prepared into composite particles by a mixing granulation process. In a sealed preparation chamber of a 3D printing device, composite particles are subjected to laser-induced in-situ reaction on the surface of a substrate to prepare a high temperature resistant stealth coating. The present invention is applied to high temperature resistance and stealth of components and prevention and control of electromagnetic pollution.
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