Shock-Induced Structural Change and its Application to a Material Development and Processing

• Published in: The Review of High Pressure Science and Technology Vol. 31; no. 3; pp. 149 - 156
• Main Author: KISHIMURA, Hiroaki
• Format: Journal Article
• Language: Japanese
• Published: Tokyo The Japan Society of High Pressure Science and Technology 2021; Japan Science and Technology Agency
• Subjects: Chemical reactions; Crystal defects; Densification; Gallium oxides; high-pressure phase transition; material processing; Physical properties; Recovery; shock compression; shock wave; shock-recovery experiment
• ISSN: 0917-639X; 1348-1940
• DOI: 10.4131/jshpreview.31.149

Shock-recovery experiment can be elucidated shock-induced changes in a material at the micro level, although transient behavior of a material under dynamic compression is not studied in a direct way and pressure in the material studied is completely released. The shock-recovery experiments have been applied to a way of a material processing including structural transitions, introducing strain and defects, promoting chemical reactions, and densification. Structural transition of a material is one of an important subject for the material processing because physical properties of the material are strongly affected by its crystalline structure. Here, some examples of the shock-recovery experiments to evaluated are presented; (1) silicon and (2) gallium oxide.