Xiaojun Yu

Title: Innovations of Xiaojun Yu in Rare Earth Permanent Magnet Materials

Introduction

Xiaojun Yu is a prominent inventor based in Beijing, China. He has made significant contributions to the field of rare earth permanent magnet materials. With a total of 2 patents, his work focuses on improving the efficiency and effectiveness of magnetic materials.

Latest Patents

Xiaojun Yu's latest patents include a novel rare earth permanent magnet material and a preparation method thereof. This invention discloses a method that involves a sintering treatment step, where a composite powder is laid on the surface of a neodymium iron boron magnetic powder layer. The process includes spark plasma sintering treatment, resulting in a neodymium iron boron magnet with a solidified diffusion layer on its surface. This method is noted for its high efficiency, good diffusion effects, and reduced quantities of heavy rare earth elements.

Another significant patent is a method for preparing rare-earth permanent magnetic material with grain boundary diffusion using a composite target by vapor deposition. This method involves evaporating a composite target and attaching it to the surface of the NdFeB magnet. The process employs medium-high temperature treatment and low temperature aging treatment, which significantly improves the coercive force of the magnet while maintaining its remanence and magnetic energy product. This innovative approach also eliminates defects caused by prolonged high-temperature treatment and greatly reduces the usage of heavy rare-earth materials, thereby lowering production costs.

Career Highlights

Xiaojun Yu is associated with Advanced Technology & Materials Co., Ltd., where he continues to develop cutting-edge technologies in the field of magnet materials. His work has garnered attention for its practical applications and contributions to the industry.

Collaborations

Xiaojun Yu collaborates with notable colleagues such as Lei Zhou and Tao Liu. Their combined expertise enhances the research and development efforts within their organization.

Conclusion

Xiaojun Yu's innovative work in rare earth permanent magnet materials showcases his commitment to advancing technology in this field. His patents reflect a deep understanding of material science and a drive to improve efficiency and reduce costs in magnet production.