Yoshio Sakka Receives Order of the Sacred Treasure
2026 Spring Conferment of Decorations2026.04.30
Yoshio Sakka
The Order of the Sacred Treasure, Gold Rays with Rosette
By advancing fine particle process technologies - including synthesis, forming, and sintering using external fields - Dr. Sakka developed various multifunctional ceramics and contributed to the progress of materials science.
Textured Ceramics by High Magnetic Field Processing
Dr. Sakka was the first in the world to demonstrate that the crystallographic orientation of alumina, previously considered non-magnetic, can be controlled by applying a strong magnetic field. Dr. Sakka established a new method for fabricating highly textured ceramics in various non-cubic systems, which has been highly valued for improving thermal conductivity, ionic conductivity, and mechanical properties.
Superplasticity in Fine-Grained Ceramics
Dr. Sakka first demonstrated that dense, fine-grained alumina ceramics can exhibit high-temperature superplasticity exceeding 200% deformation, and clarified the requirements for superplasticity. In zirconia ceramics, Dr. Sakka achieved high-speed superplastic deformation comparable to those of metals used in actual manufacturing process.
Synthesis and Properties of Metallic Nanoparticles
Dr. Sakka developed reliable technology to produce high-quality nanoparticles of metals, ceramics and their composites by DC plasma. Dr. Sakka also clarified their surface state, sintering behavior, unique morphologies, and gas adsorption/desorption properties, as well as effective methods for safe handling and storage.
