Characterizationofsolid-particleproductsindetonation experimentaddedcoinsilver
-
摘要: 使用X射线衍射、扫描电子显微镜、X射线能谱、比表面和孔隙度等分析方法,对加载货币银爆轰 实验生成样品的成分含量、粒子形貌、形成物相、金属银的晶粒度、比表面及孔隙度进行了分析。结果表明,银 和铜在爆后的粒子中仍然为共熔体,相对金属银,晶格参数减小,生成银粒子的晶粒度为15.9~22.2nm;由 于高温高压和实验环境的影响,银粒子爆后和其他杂质粒子粘结在一起形成较大的颗粒,含有许多其他成分, 氧化亚铁来源于爆炸罐的罐体,大量无定形碳粉来源于缺氧环境下炸药的不完全燃烧,铝和硅来源于实验装 置。对生成样品的形貌分析证明了XRD对银晶粒度的分析结果。因为样品中含有较多量的碳粉,为了弄清 对气体的吸附作用,对样品进行了比表面、孔隙度以及孔径分析。Abstract: Themorphology,composition,structure,grainsize,surfacearea,porevolumeandpore sizeofthedetonationproductswerecharacterizedbyusingdifferenttechniquesincludingtheX-ray diffraction(XRD),thescanningelectron microscopy(SEM),theX-rayphotoelectronspectroscopy (EDS)andthespecificsurfaceareaandporosityanalysis.Theresultsshowthatthelatticeconstantof theeutecticmeltparticlesystemcomposedbysilverandasmallaccountofcopperissmallerthanthat ofthepuresilver.TheXRDanalysesindicatethatthegrainsizeofthesilverparticlesintheeutectic meltsystemis15.9~22.2nm.TheSEManalysesrevealthatthebiggerellipsoiddetonationproduct particlesconsistofsomesmallsmoothsphericalsilverparticlesanddifferentcomponents,theFeOin whichcomesfromthedetonationvessel,theamorphouscarbonfromtheorganicexplosivecombustioninthesealvessel, andtheAlandSifromthedetonationfacility.Themorphologyinvestigations agreewiththeXRDanalyses.Tomakeitclearthatthedetonationproductscontainingsomecarbon powderactastheroleofadsorption,thesurfacearea,porevolumeandporesizewerealsodiscussed.
-
Key words:
- mechanicsofexplosion /
- solid-particleproducts /
- detonationexperiment /
- silver /
- characterization
点击查看大图
计量
- 文章访问数: 2540
- HTML全文浏览量: 70
- PDF下载量: 218
- 被引次数: 0