Tohoku University Technology: Method and apparatus for producing aluminum nitride wire: T18-356
Suitable for thermally conductive filler and high-strength filler of sealing resin
Aluminum nitride (AlN) is known to be used as a filler in the sealing resin of electronic components and semiconductors to efficiently dissipate the heat due to its high insulation and thermal conductivity. AlN particles are manufactured at high temperatures, but the conventional method can not include a large amount of AlN particles in the resin. In recent years, the improvement of sealing resin strength is required since the demands for miniaturization of electronic components and semiconductors are increasing. This invention can simply provide a new form of AlN that can be suitably used as a thermally conductive filler and a high strength filler. This invention is characterized by the process of mixing the carbon and alumina particles in a crucible then to achieve a mixture ratio more important than the stoichiometric mixture ratio required to produce AlN, and irradiating the alumina particles with microwaves under a nitrogen atmosphere to reduce and nitride the alumina particles with carbon particles. This invention describes also the process of sublimating the AlN and attaching it to a sample in a non-heated state to produce an AlN wire.
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The revenue generated from technology transfer is reinvested as new research funding for universities and researchers, and is utilized to create further research outcomes. To ensure the smooth operation of this cycle, known as the "Intellectual Creation Cycle," we will vigorously promote technology transfer. The types of seeds we handle include patents, know-how, databases, and programs. We have established a collaborative framework by signing basic technology transfer agreements with the following universities (as of June 1, 2025): Tohoku University, Hirosaki University, Iwate University, Akita University, Fukushima University, Yamagata University, Tohoku Gakuin University, Iwate Medical University, Fukushima Medical University, Aizu University, Miyagi University, Hokkaido University, Muroran Institute of Technology, and Showa Medical University.
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