中国物理B ›› 2024, Vol. 33 ›› Issue (9): 98104-098104.doi: 10.1088/1674-1056/ad58c6
Saisai Wang(王赛赛)1,†, Xinyu Zhao(赵鑫宇)1,†, Kuo Hu(胡阔)1,‡, Bingtao Feng(丰丙涛)1, Xuyuan Hou(侯旭远)1, Yiming Zhang(张羿鸣)1, Shucheng Liu(刘书成)1, Yuchen Shang(尚宇琛)1,§, Zhaodong Liu(刘兆东)1,2,¶, Mingguang Yao(姚明光)1, and Bingbing Liu(刘冰冰)1
Saisai Wang(王赛赛)1,†, Xinyu Zhao(赵鑫宇)1,†, Kuo Hu(胡阔)1,‡, Bingtao Feng(丰丙涛)1, Xuyuan Hou(侯旭远)1, Yiming Zhang(张羿鸣)1, Shucheng Liu(刘书成)1, Yuchen Shang(尚宇琛)1,§, Zhaodong Liu(刘兆东)1,2,¶, Mingguang Yao(姚明光)1, and Bingbing Liu(刘冰冰)1
摘要: Deformation can change the transition pathway of materials under high pressure, thus significantly affects physical and chemical properties of matters. However, accurate pressure calibration under deformation is challenging and thereby causes relatively large pressure uncertainties in deformation experiments, resulting in the synthesis of complex multiphase materials. Here, pressure generations of three types of deformation assemblies were well calibrated in a Walker-type large-volume press (LVP) by electrical resistance measurements combined with finite element simulations (FESs). Hard Al$_{2}$O$_{3}$ or diamond pistons in shear and uniaxial deformation assemblies significantly increase the efficiency of pressure generation compared with the conventional quasi-hydrostatic assembly. The uniaxial deformation assembly using flat diamond pistons possesses the highest efficiency in these deformation assemblies. This finding is further confirmed by stress distribution analysis based on FESs. With this deformation assembly, we found shear can effectively promote the transformation of C$_{60}$ into diamond under high pressure and realized the synthesis of phase-pure diamond at relatively moderate pressure and temperature conditions. The present developed techniques will help improve pressure efficiencies in LVP and explore the new physical and chemical properties of materials under deformation in both science and technology.
中图分类号: (Deformation, plasticity, and creep)