摘要
以三元碳化物陶瓷Ti_3AlC_2为原料,在500°C^1000°C温度范围内氯化制备具有纳米孔结构的碳化物衍生碳(Ti_3AlC_2-CDC)。高温氯化制备得到的Ti_3AlC_2-CDC由无定形碳和石墨组成。氯化温度越高,石墨化程度越明显,石墨有序度越高。Ti_3AlC_2-CDC的结构与前驱体Ti_3AlC_2的层状结构保持一致。但随着温度升高,Ti_3AlC_2-CDC会逐渐裂解为单片层或多片层。采用N2吸附技术研究了700°C、800°C和1000°C下制备的Ti_3AlC_2-CDC的孔隙结构特征,通过分析试样的吸附等温线特征和孔径分布探讨了温度对CDC孔结构的影响。
In this paper, carbide-derived carbon （CDC） was successfully synthesized from Ti3AlC2 precursor by chlorination with freshly prepared Cl2 at temperatures between 500℃ and 1000℃ in a tube furnace. Ti3AlC2-CDC prepared via chlorination at high temperatures consists of amorphous carbon and graphite. There was a obvious trend of graphitization in Ti3AlC2-CDC synthesized at higher temperature and the degree of order of graphitic structures increased with increasing temperature. The results shows that Ti3AlC2-CDC particles retained layer structure of raw Ti3AlC2 precursors and particles broke into single layers and/or multilayers. The pore structure characteristics of CDC chlorinated at 700℃, 800℃ and 1000℃ were examined by using N2 adsorption technique. Meanwhile, the influence of the air tightness of the chlorinating setup on the synthesis of CDC was also studied.
出处
《现代技术陶瓷》
CAS
2016年第1期34-40,共7页
Advanced Ceramics
基金
国家自然科学基金(51472075)
河南省科技创新人才计划(134100510008)
河南省高校青年骨干教师资助计划(2012GGJS-054)
河南理工大学创新型科研团队项目(T2013-4)
