Calcium lanthanum sulfide nano-powders, method of making, and optically transmissive body formed therefrom
OwnerVenkata S Reddy Channuinventor
Life of this patent
Estimating the term…
Abstract
A method for producing calcium lanthanum sulfide (CLS) nano powder and optical ceramics formed therefrom. The method includes the steps of mixing a lanthanum precursor and calcium precursor in water to obtain a solution and adding a sulfide precursor to the solution. Upon adding the sulfide precursor, stirring the solution for 5-25 minutes at 55-95° C. to obtain a mixture. The mixture is then introduced into a muffle furnace, preheated at 400-600° C., and the mixture is kept for 15-50 minutes to obtain nano powder. The nano powder can be annealed and subjected to spark plasma sintering to obtain the optical ceramics.
Claims20
A method for forming optical ceramics, the method comprising the steps of:
- mixing a lanthanum precursor and a calcium precursor in water to obtain a solution;
- adding a sulfide precursor to the solution;
- upon adding the sulfide precursor, stirring the solution for 5-25 minutes at 55-95° C. to obtain a mixture;
- and
- introducing the mixture into a preheated muffle furnace, wherein the muffle furnace is preheated at 400-600° C., and mixture is kept in the preheated muffle furnace for 15-50 minutes to obtain calcium lanthanum sulfide (CLS) nano powder.
An optical ceramics formed by a method comprising the steps of:
- mixing a lanthanum precursor and a calcium precursor in water to obtain a solution;
- adding a sulfide precursor to the solution;
- upon adding the sulfide precursor, stirring the solution for 5-25 minutes at 55-95° C. to obtain a mixture;
- and
- introducing the mixture into a preheated muffle furnace, wherein the muffle furnace is preheated at 400-600° C., and mixture is kept in the preheated muffle furnace for 15-50 minutes to obtain calcium lanthanum sulfide (CLS) nano powder.
A method for producing calcium lanthanum sulfide (CLS) nano powder, the method comprising the steps of:
- mixing a lanthanum precursor and a calcium precursor in water to obtain a solution;
- adding a sulfide precursor to the solution;
- upon adding the sulfide precursor, stirring the solution for 5-25 minutes at 55-95° C. to obtain a mixture;
- and
- introducing the mixture into a preheated muffle furnace, wherein the muffle furnace is preheated at 400-600° C., and mixture is kept in the preheated muffle furnace for 15-50 minutes to obtain the calcium lanthanum sulfide (CLS) nano powder.
The method according to claim 20, wherein the lanthanum precursor is lanthanum nitrate hexahydrate, the sulfide precursor is thioacetamide, and the calcium precursor is hydrated calcium nitrate.
Dependencies are inferred from the claim text.