Quality multi-spectral zinc sulfide

• Main Authors: GOELA JITENDRA S, BRESE NATHANIEL E
• Format: Patent
• Language: English
• Published: 05.01.2016
• Subjects: ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMICAL SURFACE TREATMENT; CHEMISTRY; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F; CONCRETE; DIFFUSION TREATMENT OF METALLIC MATERIAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; INORGANIC CHEMISTRY; LIME, MAGNESIA; METALLURGY; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PHYSICS; REFRACTORIES; SLAG; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; TREATMENT OF NATURAL STONE

Low scatter water clear zinc sulfide with reduced metal contamination is prepared by coating a chuck which holds zinc sulfide and machining the zinc sulfide with uncoated particles. An inert foil is cleaned with an acid cleaning method and also cleaning the zinc sulfide. The zinc sulfide is wrapped in the inert foil and then treated by a HIP process to provide a low scatter water-clear zinc sulfide. The low scatter water-clear zinc sulfide may be used in articles such as windows and domes.