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Semiconductor pigment of Cd-Zn-S is synthesized through the solid state reaction method and its structure and surface morphology is characterized by X-ray diffraction (XRD) and scanning electron microscope(SEM). It is demonstrated that the crystal lattice of the product is hexagonal. When the heat treatment temperature increases, the distortion of crystal lattice reduces. The samples annealed at different temperatures agglomerate to different degrees while the one annealed at higher temperature agglomerates clearly. The infrared emissivity of Cd-Zn-S at two window-bands of 3-5μm and 8-14μm is researched. The researched result shows that the infrared emissivity of Cd-Zn-S in 8-14μm wave bands is much higher than that in 3-5μm wave bands. The infrared emissivity decreases with the increasing of heat treatment temperature, which reason is that with the increasing of temperature, the infrared absorption decreases and the scatter by the particles rises. 相似文献
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提出了一种基于神经网络的弹道试验数据处理方法,建立了UHMWPE纤维复合材料防弹性能分析的BP神经网络模型,并基于模型研究靶板的面密度、弹片的入射速度、冲击方式等因素对材料防弹性能的影响。 相似文献
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把具体的故障模式视为系统中的一个单元,运用模糊可靠性理论,对具有多种故障模式的机器进行可靠性分析,导出了串联系统、并联系统和串并联系统的模糊可靠性计算公式,并给出算例。 相似文献