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链状[NH3CH2CH2NH3]AgAsS4的溶剂热合成及表征 总被引:2,自引:0,他引:2
利用溶剂热方法合成了链状[NH3CH2CH2NH3]AgAsS4,通过单晶X射线衍射技术对其进行了晶体结构分析,该化合物晶体属单斜晶系,空间群C2/c,晶胞参数a=1.35805(8)nm,b=0.65331(3)nm,c=2.27711(9)nm,β=106.42(3)°,Z=8.化合物具有有趣的梯子状双链结构,该阴离子链由AsS4与AgS3共用顶点交替连接而成,有机阳离子在阴离子链之间存在较强的N—H…S氢键.DSC和Tg分析结果表明化合物在200℃以下是稳定的. 相似文献
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(EnH2)2Ge2S6的合成与结构表征 总被引:2,自引:0,他引:2
用溶剂热方法制备了(EnH2)2Ge2S6单晶.单晶X射线衍射分析结果表明,(EnH2)2Ge2S6属单斜晶系,P2(1)/n空间群,晶胞参数a=0.67125(5)nm,b=1.12290(4)nm,c=1.07518(4)nm,β=92.288(2)°,Z=2.利用DSC及TG分析研究了其热稳定性,结果表明,该化合物在200℃以下能够稳定存在. 相似文献
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本文讨论存在于晶态和非晶态硅(锗)中的原子相关性及二者之间的联系,给出原子相关性的定量表达式。在此基础上建造一个包含400个原子的非晶硅(锗)的结构模型,其主要参数均与实验符合得很好。
关键词: 相似文献
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The shape and microstructurc of the fiber-optic liquid-level sensor head, which was made of two fusion-spliced multimode optical fibers, were experimentally studied by using scanning electron microscope (SEM) technology in order to optimize the performance characteristic of the fiber sensor head. The parabolic profile of the sensor head was found to be better and having length-width ratio from 1.2:1 to 1.3:1. Some other useful possibilities were proposed. 相似文献
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利用微波ECR全方位离子注入技术,在单晶硅(100)衬底上制备类金刚石薄膜.分析结果表明,所制备的类金刚石碳膜具有典型的类金刚石结构特征,薄膜均匀、致密,表面粗糙度小,摩擦系数小.其中,薄膜的结构和性能与氢流量比关系密切,随氢流量比的增加,薄膜的沉积速率减小,表面粗糙度降低,且生成sp3键更加趋向于金刚石结构,表面能 更低,从而使摩擦系数大幅降低.
关键词:
全方位离子注入
类金刚石碳膜
拉曼光谱
摩擦磨损 相似文献
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With admixture of n-diamond and diamond-like carbon powders (DLC) as carbon source, transparent wafers have been synthesized by hydrothermal process at 100℃ and atmosphere pressure. Scanning electron microscopy, X-ray diffraction, Raman spectroscopy, transmission electron microscopy, electron-probe microanalysis and Fourier-transform infrared spectrometer were used to analyze those transparent wafers. These results indicated that the transparent wafers were amorphous sp^3-banding carbon wafer, and that the wafers were not aggregate of DLC from the carbon source but a new kind of reaction product by hydrothermal treatment. 相似文献
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