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本文首次报道了用真空蒸发制备的Ａｌ－ＭｇＦ２ 金属陶瓷薄膜微观结构与光学特性。在２００～８００ｎｍ 波段，薄膜的反射率很低，为１％ ～２．５％ ；透射率则呈抛物线上升，至８００ｎｍ处达７２％ ；吸光度随波长增大呈指数下降。Ａｌ－ＭｇＦ２ 金属陶瓷薄膜的这种光学性质与其微观结构有关。文章还对Ａｌ－ＭｇＦ２ 金属陶瓷薄膜的制备技术和氧化现象进行了讨论。
This paper reports for the first time the microstructure and optical properties of Al-MgF2 cermets prepared by vacuum evaporation. In the 200-800 nm band, the reflectance of the film is very low, ranging from 1% to 2.5%; the transmittance increases parabolically to 72% at 800 nm; and the absorbance decreases exponentially with increasing wavelength. The optical properties of the Al-MgF2 cermet film are related to its microstructure. The article also discusses the preparation technology and oxidation phenomenon of Al-MgF2 cermet thin film.