高压物理学报2017，Vol.31Issue(6)：735-741,7.DOI:10.11858/gywlxb.2017.06.008
用于高压原位中子衍射的PCBN压腔
In-Situ High-Pressure Neutron Diffraction with Supported PCBN Anvils
摘要
Abstract
We used the polycrystalline cubic boron nitride (PCBN)as the anvil material based on its high hardness and strong absorption of neutrons,and designed a new type of concave-flat anvil and a hybrid gasket made of TiZr alloy,carbon fiber and teflon.The PCBN cell pressure was calibrated using the transformation points of ZnTe and ZrW2 O8 respectively.The results show that the cell pressure reaches 9 GPa with the sample cell volume of 9 mm3 when the load pressure is 260 kN.The in-situ high pressure neutron diffraction experiments indicate that the PCBN anvil miscellaneous signal was not observed in the high pressure neutron diffraction patterns of iron.By further optimizing the PCBN cell,we expect to obtain a high-quality neutron diffraction patterns under higher pressure than 10 GPa.关键词
高压/原位中子衍射/外凹式/PCBN压砧Key words
high pressure/in-situ neutron diffraction/concave-flat/PCBN anvils分类
数理科学引用本文复制引用
张雅洁,贺端威,房雷鸣,李欣,刘方明,胡启威,陈吉,丁未,王永华..用于高压原位中子衍射的PCBN压腔[J].高压物理学报,2017,31(6):735-741,7.基金项目
国家自然科学基金(11427810) （11427810）
