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Title: Ohta Shigetoshi: Innovator in Alumina Silica Sintered Ceramics
Introduction
Ohta Shigetoshi is a notable inventor based in Aichi, Japan, recognized for his contributions to the field of materials science, particularly in the production of alumina silica sintered ceramics. His innovative approach has paved the way for advancements in ceramic materials with enhanced strength characteristics.
Latest Patents
Ohta holds a patent for a revolutionary process for producing alumina silica sintered ceramics. This inventive method is designed to create ceramics that achieve a bending strength of at least 300 MPa at room temperature and reach a remarkable 400 MPa at elevated temperatures, such as 1,300°C. The patented process involves several critical steps: starting with a chiefly amorphous powder composed of 62-73 wt % Al₂O₃ and 38-27 wt % SiO₂, the powder undergoes calcination to form a crystalline product that contains minimal alkali and alkaline earth metal oxides. Subsequently, the calcined product is ground, compacted, and sintered at high temperatures (1,500°C - 1,750°C) under atmospheric pressure, resulting in ceramics with exceptional mechanical properties.
Career Highlights
Throughout his career, Ohta Shigetoshi has worked with reputable organizations such as the Agency of Industrial Science and Technology and Mino Yogyo Co., Ltd. His experience in these institutions has significantly contributed to his expertise and success in the field of material innovation.
Collaborations
Ohta collaborated with esteemed colleagues such as Shuzo Kanzaki and Hideyo Tabata. These partnerships have enabled him to engage in fruitful research and development endeavors, furthering the understanding and application of ceramic materials in various industries.
Conclusion
Ohta Shigetoshi's innovative work in the development of alumina silica sintered ceramics marks him as a key figure in advancing materials science. His patented processes not only enhance the mechanical properties of ceramics but also open new possibilities for their application in high-temperature environments. As the field of ceramics continues to evolve, the contributions made by inventors like Ohta are invaluable for future innovations.