Company Filing History:
Years Active: 2019-2021
Title: The Innovations of Takayuki Shimizu
Introduction
Takayuki Shimizu is a prominent inventor based in Yachiyo, Japan. He has made significant contributions to the field of magnet material alloys, particularly focusing on R-T-B-based compositions. With a total of 2 patents to his name, Shimizu's work has garnered attention for its innovative approaches to enhancing the performance of sintered magnets.
Latest Patents
Shimizu's latest patent involves an R-T-B-based magnet material alloy and the method for producing it. This invention includes an RTB phase as the principal phase, along with R-rich phases that are enriched with the rare earth element R. The principal phase features primary dendrite arms and secondary dendrite arms diverging from them. The regions where the secondary dendrite arms are formed constitute a volume fraction of 2 to 60% of the alloy. This design ensures excellent coercive force in R-T-B-based sintered magnets, even with a reduced amount of heavy rare earth elements. The inter-R-rich phase spacing is ideally at most 3.0 μm, while the volume fraction of chill crystals should not exceed 1%. Additionally, the secondary dendrite arm spacing is recommended to be between 0.5 to 2.0 μm, and the ellipsoid aspect ratio of the R-rich phase is preferably at most 0.5.
Career Highlights
Takayuki Shimizu is currently associated with Santoku Corporation, where he continues to innovate in the field of magnet materials. His work has not only advanced the understanding of R-T-B-based alloys but has also contributed to the development of more efficient and effective magnet technologies.
Collaborations
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Conclusion
Takayuki Shimizu's contributions to the field of magnet material alloys exemplify the spirit of innovation and dedication to advancing technology. His patents reflect a deep understanding of material science and a commitment to improving the performance of magnetic materials.