化学气相沉积  ZnS    (  CVD  ZnS  )
化学气相沉积硫化锌是一种性能优异的红外光学材料，广泛用作红外窗口、球罩和光学元件。
采用自主研发的化学气相沉积技术，以锌和硫化氢气体为原料，生产出了高质量的化学气相沉积硫化锌产品，并可向客户提供标准及多光谱硫化锌产品。  
标准硫化锌在8-12μm波段上具有很好的透过率和折射率均匀性，高强度和化学稳定性使其可以再恶劣的环境中使用。
多光谱硫化锌是由标准硫化锌经过热等静压处理获得的，具备从可见光到长波红外波段的全波段透射性能。我们生产的多光谱硫化锌在1.06μm有很高的透过率，能够满足多波段复合的使用要求。  
          物理性能                                                                                                                                                                                                                              
        元素符号                                                                                                                                          ZnS
        晶体结构                                                                                                                                          Cubic
        熔点(℃)                                                                                                                                          1830
        密度(g/cm3)                                                                                                                                4.09
        纯度                                                                                                                                                    >  99.9995%
        带隙                                                                                                                                                    3.66eV(@300K)
          光学性能                                                                                                                                                                                                                          
        折射率系数  （室温20℃）
        FLIR  Grade                                                                                                    Water-clear  Grade
        Wavelength(μm)                              n                                                        Wavelength(μm)                              n
        0.50                                                          2.419                                                  0.5086                                              2.41279
        0.70                                                          2.332                                                  0.7065                                              2.33073
        1.00                                                          2.292                                                  1.0140                                              2.29165
        3.00                                                          2.257                                                  3.000                                                  2.25772
        5.00                                                          2.246                                                  5.000                                                  2.24661
        7.00                                                          2.232                                                  8.000                                                  2.22334
        8.20                                                          2.221                                                  10.000                                                2.20084
        10.20                                                      2.198                                                  11.250                                                2.18317
        11.0                                                          2.186

        吸收系数  (@10.6μm,  cm-1)                                                            ≤  0.2                                                ≤  0.2
        折射率均匀性  (@0.6328μm)                                                            <  5×10-5                                                <  5×10-5
        热光系数(dn/dt)                                                                                        6.4×10-5(@0.63μm)        5.4×10-5(@0.63μm)
                                                                                                                                          4.2×10-5(@1.15μm)        5.0×10-5(@1.15μm)
                                                                                                                                          4.6×10-5(@3.39μm)        4.6×10-5(@3.39μm)
                                                                                                                                          6.6×10-5(@10.6μm)        4.6×10-5(@10.6μm)
  
  
        热性能                                                                                                                                                                                                                                                                          
                                                                                            FLIR  Grade                                              Water-clear  Grade
        热膨胀系数(10-6,  ℃-1)                            7.85                                                                    7.85
        断裂模量(Mpa)                                                103.4  (@room  temperature)        68  (@room  temperature)
                                                                                                    160  (@660℃)                                                  160  (@600℃)
        热导率  (@300K,Wcm-1.K-1)                  0.19                                                                      0.272
        比热  (Cal/g.K)                                                    0.112                                                                  0.124
  
        机械性能                                                                                                                                                                                                                                                                
        杨氏模量(Gpa)                                                  74.5                                                                    74.5
        泊