高压物理学报2025，Vol.39Issue(5)：14-24,11.DOI:10.11858/gywlxb.20251006
C3N4热化学状态方程的研究及应用初探
Study and Preliminary Application of the Thermochemical Equation of State of C3N4
摘要
Abstract
C3N4 has a wide range of applications in the synthesis of superhard materials and photocatalysis materials,but its phase transitions and physical behaviors under high pressure and high temperature conditions are not fully understood.Therefore,it is necessary to study its thermochemical equation of state.In this paper,we propose a novel,high-precision and low-cost method for quantitatively determining the equation of state of C3N4,based on decomposition phase boundary and compression line at room temperature.We constructs the equation of state for two phases of C3N4,and the corresponding physical quantities match well with first-principles calculations and experimental values,proving the reliability of the equation of state.Based on the equation of state of C3N4,we make a preliminary judgment on the phase state of the controversial points.Furthermore,this study attempts to incorporate the equation of state of C3N4 into the research on the detonation mechanism of novel nitrogen-rich explosives.It significantly reduces the long-standing errors between the calculated values and experimental values of the detonation parameters of the explosives,and provides a new reference direction for the research on the detonation parameter calculations of new explosives.关键词
C3N4/热化学状态方程/相边界/富氮炸药Key words
C3N4/thermochemical equation of state/phase boundary/nitrogen-rich explosive引用本文复制引用
陈玉兰,裴红波,郭文灿,刘福生,甘云丹,李星翰..C3N4热化学状态方程的研究及应用初探[J].高压物理学报,2025,39(5):14-24,11.基金项目
国家自然科学基金(11902276) （11902276）
冲击波物理与爆轰物理全国重点实验室基金(2024CXPTGFJJ06408) （2024CXPTGFJJ06408）
四川省自然科学基金(2022NSFSC1802) （2022NSFSC1802）
