Neutron powder diffraction and high-pressure synchrotron x-ray diffraction study of tantalum nitrides Project supported by the Research Foundation of Key Laboratory of Neutron Physics (Grant No. 2015BB03), the National Natural Science Foundation of China (Grant Nos. 11774247), the Science Foundation for Excellent Youth Scholars of Sichuan University (Grant No. 2015SCU04A04), and the Joint Usage/Research Center PRIUS (Ehime University, Japan) and Chinese Academy of Sciences (Grant No. 2017-BEPC-PT-000568). |
(color online) (a) XRD pattern of starting material and WC-type TaN compacts synthesized under high pressure and temperature, (b) a typical FE-SEM image of Vickers indentation produced by a diamond pyramidal indenter under a load of 1 kg, inset: an optical photograph of TaN compact. |