Ph.D. ChuanMin Meng [from Institute of Fluid Physics]

Title: Double elastic shock response of the diamond-SiCcomposite under pressure up to 110GPa

Time: 10:00 - 11:00, November 7

Place: Conference Room 201, Building 6, HPSTAR(Shanghai)

Host: Bin Chen

Abstract:

Shock compression property of the diamond-SiC composite was measured by means of the interferometer technique. Time-resolved free-surface velocity profiles indicate an elastic-plastic-elastic shock response of this composite which is observed for the first time. The elastic-plastic transitionat 12.75GPa is due to the yielding of SiC matrix. In a shock pressure range of 20~110GPa, the bulk composite shows another elastic compression property. The peak pressure is much higher than the HEL of single crystal diamond.

Biography of the Speaker:

ChuanMin Meng, Ph.D., Associate Professor, mainly engaged instudy of physical and chemical properties of materials under extreme conditions. He published papers more than 20 papers in Nanoscale, MaterialLetter, JAP, APL, J nanosci & nanotech and other journals, and authorizing three national invention patents.

Wenjun Zhu (Co-speaker), Ph. D, Professor, mainly engaged inradiation damage, the dynamic response of materials under high pressure and extreme conditions of energetic materials chemistry, new materials synthesis research. He published more than 70 in Physical Review B/E,  Int. J.Plasticity, Applied Physics Letters, Nanoscale, Fuel, and other SCI journals, obtained five Ministerial-level scientific and technological progress awards, authorized four national invention patents, peer reviews for "Physical Review Letters /B", "Metallurgy and Materials Transaction A", "Materialia", "Materials Science & Engineering A", "Chinese Physics Letters" and other journals in Chinese. Has been invited to have presentation many times in the international and domestic conference.