【摘要】 为了得到超硬相的C₃N₄,利用石墨相C₃N₄（g-C₃N₄）为实验的初始原料,利用六面项压机高温高压实验技术,对g-C₃N₄进行了高温高压研究.实验结果表明,在5.2 GPa、600℃和5.2 GPa、800℃两个压力和温度点,制备的样品经过X射线衍射（XRD）分析,样品仍然为g-C₃N₄,当温度升到1000℃时,发现样品发生了变化,经XRD和X光电子能谱（XPS）分析,g-C₃N₄完全分解为石墨.更多还原

【Abstract】 Graphitic carbon nitride （g-C₃N₄） was used as raw materials for synthesizing superhard C₃N₄. High-temperature and high-pressure （HTHP） technique has been used to investigate the g-C₃N₄ by a cubic anvil high-pressure apparatus. The results show that samples were still g-C₃N₄ at 600 ℃ and 800 ℃ under 5. 2 GPa by X-ray diffraction analysis. But, the samples were changed at 5. 2 GPa and 1000 ℃. X-ray diffraction and X-ray photoelectron spectroscopy analysis indicated that g-C₃N₄ decompose entirely into graphite.更多还原