3D Printing of Carbide and Nitride Ceramics for Powered Electronics Packaging

A. Steinmark, I. Ivanov
Materic Inc., Maryland, United States

Poster stand number: W101

Keywords: ceramics, aluminum nitride, powered electronics, non-oxide ceramics

Printed aluminum nitride ceramics can vastly increase the electrical efficiency in power devices by managing the energy lost as heat. This is particularly important for electric vehicle manufacturers as the industry moves towards “Zero Emissions” transportation. Conventional manufacturing methods for non-oxide ceramics are very limiting in terms of the geometry that is able to be produced. Using our technology, heat sinks and other cooling architectures can be modeled with more complex geometry. Our manufacturing process uses less material allowing for faster production of prototypes, and can be used to reduce packaging volume and weight. The Selective Laser Reaction Sintering (SLRS) process is similar to the standard Direct Metal Laser Sintering (DMLS) processed used for metal additive parts, though instead of using an inert gas to expunge any oxygen and allow for increased bonding between particles, the chamber is filled with a reactive gas which the sintering laser breaks down and causes a reaction which forms a non-oxide ceramic. We use a proprietary mix of precursor powders to achieve near “net-shape” geometry during the SLRS process. This technique has also been proven for other materials such as SiC, TiC, TaC, and TaN.