Sadao Ohta

Title: The Innovations of Sadao Ohta

Introduction

Sadao Ohta is a notable inventor based in Hyogo, Japan. He has made significant contributions to the field of materials science, particularly in the development of superalloys. With a total of two patents to his name, Ohta's work has had a profound impact on high-temperature structural materials.

Latest Patents

Ohta's latest patent focuses on a nickel-chromium-tungsten base superalloy. This improved superalloy possesses all the characteristics required for high-temperature structural materials used in high-temperature gas-cooled reactors. The alloy consists essentially of 16-28% chromium, 15-24% tungsten, and various other elements, including zirconium, yttrium, boron, carbon, silicon, manganese, titanium, aluminum, and niobium, with the balance being nickel and inevitable impurities. This composition ensures high-temperature strength, corrosion resistance, good producibility, and resistance to embrittlement due to thermal aging.

Career Highlights

Throughout his career, Sadao Ohta has worked with prominent institutions such as the Japan Atomic Energy Research Institute. His expertise in materials science has allowed him to contribute to advancements in high-temperature materials, which are crucial for the energy sector.

Collaborations

Ohta has collaborated with notable colleagues, including Tatsuo Kondo and Hajime Nakajima. These collaborations have further enriched his research and development efforts in the field of superalloys.

Conclusion

Sadao Ohta's innovations in the development of nickel-chromium-tungsten base superalloys highlight his significant contributions to materials science. His work continues to influence the design and application of high-temperature structural materials in various industries.