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SiAlON films with antireflective and protective functionality for zinc sulfide were prepared by an ion beam sputtering method. A great transmittance improvement (at 3.8μm) of 25.1% has been realized for zinc sulfide substrate. At the same time, the in situ high temperature transmittance was also recorded and it was proven that the SiAlON films on zinc sulfide window materials can keep thermal stability...
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