火炸药学报2017，Vol.40Issue(3)：68-71,84,5.DOI:10.14077/j.issn.1007-7812.2017.03.012
纳米压痕技术对比研究DNAN和TNT晶体的微观力学性能
Comparative Study on Micromechanical Properties of DNAN and TNT Crystals by Nanoindentation
摘要
Abstract
The DNAN and TNT crystals were prepared by solvent evaporation method.The micromechanical properties (hardness and elastic modulus)of DNAN and TNT crystals were studied by nanoindentation.The difference of variation of indentation with time was investigated by in situ scanning probe microscopy(SPM).The results show that the average hardness and elastic modulus are 7.82GPa and 0.22GPa for DNAN and 12.19GPa and 0.48GPa for TNT, respectively, indicating that the ability of resistance to deformation of TNT is stronger than that of DNAN.With increasing the indentation depth from 118nm to 856nm, the hardness of DNAN reduces from 0.61GPa to 0.22GPa;With increasing the indentation depth from 27nm to 481nm, the hardness of TNT reduces from 2.9GPa to 0.48GPa, revealing that DNAN and TNT have size-effect.With increasing the time from 0 to 50min, the indentation depth reduces from-270.99nm to-44.28nm for DNAN and from-415.12nm to-369.21nm for TNT, showing that the elastic resilience of DNAN crystal has more obvious slow elastic resilience than that of TNT crystal, which means DNAN has stronger ability to absorb impact energy.关键词
纳米压痕/微观力学性能/含能单晶/DNAN/TNT/溶剂挥发法Key words
nanoindentation/micromechanical property/energetic crystal/DNAN/TNT/solvent evaporation method分类
军事科技引用本文复制引用
朱一举,涂健,常海,苏鹏飞,陈智群,徐敏..纳米压痕技术对比研究DNAN和TNT晶体的微观力学性能[J].火炸药学报,2017,40(3):68-71,84,5.基金项目
国防科工局技术基础计量项目(JSJL2014208A005) （JSJL2014208A005）
