Company Filing History:
Years Active: 2010-2020
Title: Yiman Wang: Innovator in Scandate Dispenser Cathodes
Introduction
Yiman Wang is a prominent inventor based in Beijing, China. She has made significant contributions to the field of materials science, particularly in the development of advanced cathode technologies. With a total of two patents to her name, her work focuses on improving the performance and manufacturing processes of dispenser cathodes.
Latest Patents
Yiman Wang's latest patents include a "Method for preparing pressed scandia-doped dispenser cathodes using microwave sintering." This innovative method involves dissolving nitrates and ammonium metatungstate in deionized water to create a homogeneous solution. The process includes spray drying to obtain precursor powder, which is then decomposed and subjected to a two-step reduction to form doped tungsten powder with uniform element distribution. The resulting cathode is prepared through one-time microwave sintering, significantly reducing sintering shrinkage and time while ensuring excellent emission performance at 950°C.
Another notable patent is the "Method of manufacturing a pressed scandate dispenser cathode." This method begins with the dissolution of scandium nitrate, barium nitrate, calcium nitrate, aluminum nitrate, and ammonium metatungstate in deionized water. The mixture is then combined with a cross-linking agent, resulting in a gel after water bathing. The gel is calcined to obtain powders, which are subsequently reduced by hydrogen. Finally, the powders are pressed into shapes and sintered in a hydrogen atmosphere or through Spark Plasma Sintering in a vacuum.
Career Highlights
Yiman Wang is affiliated with the Beijing University of Technology, where she conducts her research and development activities. Her work has garnered attention for its innovative approaches to enhancing cathode materials, which are crucial for various electronic applications.
Collaborations
Yiman collaborates with esteemed colleagues, including Jinshu Wang and Wei Liu, who contribute to her research endeavors. Their combined expertise fosters a productive environment for innovation and development in the field of materials science.
Conclusion
Yiman Wang's contributions to the field of dispenser cathodes exemplify her commitment to advancing technology through innovative methods. Her patents reflect a deep understanding of materials science and a dedication to improving manufacturing processes.