Itsurou Tajima

Title: Innovations of Itsurou Tajima

Introduction

Itsurou Tajima is a notable inventor based in Naka, Japan. He has made significant contributions to the field of materials science, particularly in the production of advanced diamond and boron nitride compacts. With a total of 5 patents to his name, Tajima's work has implications for various cutting and machining applications.

Latest Patents

One of Tajima's latest patents is a production method of fine grain polycrystalline diamond compact. This invention addresses the need for a production method that is suitable for finishing cutting tool materials and ultra-precision machining tool materials. The method eliminates the need for a freeze-drying process to prevent secondary particle formation and does not require the mixing of an aid in advance. The process involves layering diamond powder with carbonate and a C—H based organic compound in a Ta capsule, which is then sintered under high pressure and temperature conditions.

Another significant patent is the method for producing a sintered cubic boron nitride compact. This method allows for the creation of a highly uniform and dense sintered compact with high hardness by sintering at milder conditions without a binder. The process includes deflocculating secondary particles in starting powders and sintering the green compact in the presence of a supercritical fluid source, achieving high density and uniformity.

Career Highlights

Tajima is currently associated with Mitsubishi Materials Corporation, where he continues to innovate in the field of advanced materials. His work has been instrumental in enhancing the performance and efficiency of cutting tools and machining processes.

Collaborations

Throughout his career, Tajima has collaborated with notable colleagues, including Akhmadi Eko Wardoyo and Minoru Akaishi. These collaborations have contributed to the advancement of his research and the successful development of his patented technologies.

Conclusion

Itsurou Tajima's contributions to the field of materials science through his innovative patents have paved the way for advancements in cutting and machining technologies. His work continues to influence the industry and showcases the importance of innovation in material production.