Method of manufacturing a sulfide-based ceramic element, particularly for IR-optics applications
AssigneesCentre National De La Recherche Scientifique, Universite De Rennes 1
InventorsNoha Hakmeh, Odile Merdrignac-Conanec, Xiang-Hua Zhang
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Abstract
A method of manufacturing a sulfide-based ceramic element, such as a transparent infrared optical element, comprises the steps of: synthesizing a sulfide powder; and sintering the powder to form the ceramic element; wherein the step of synthesizing the sulfide powder is performed by combustion in an aqueous solution, the solution comprising water as its only solvent, or containing water as its main solvent and at most 10%, and preferably at most 1% of the overall solvent mass, of one or more combustible solvents. The sulfide powder may be chosen, in particular, among ZnS, BaLa2S4, CaLa2S4.
Claims10
A method of manufacturing a sulfide-based transparent infrared optical ceramic element comprising the steps of:
- synthesizing a sulfide powder;
- and
- sintering said powder to form said ceramic element;
- wherein said step of synthesizing said sulfide powder is performed by combustion in the presence of water by heating the aqueous solution at a temperature comprised between 400° C. and 800° C., said solution comprising 90-100% water and 0-10% of one or more non-water solvents based on the overall solvent mass.
Dependencies are inferred from the claim text.