Vitreous compositions of the vitroceramic type, transparent to infrared
AssigneesCentre National de la Recherche, Universite Rennes 1
InventorsXianghua Zhang, Jacques Lucas, Hongli Ma, Jean-Luc Adam
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Abstract
The invention relates to vitreous compositions, in particular of the vitroceramic type, transparent to infrared, production and uses thereof. Said compositions comprise in mol. %: Ge 5-40, Ga<1, S+Se 40-85, Sb+As 4-40, MX 2-25, Ln 0-6, adjuncts 0-30, where M=at least one alkaline metal, selected from Rb, Cs, Na, K and Zn, X=at least one atom of chlorine, bromine or iodine, Ln=at least one rare earth and adjunct=at least one additive comprising at least one metal and/or at least one metal salt with the sum of all molar percentages of the components present in said composition being 100.
Claims24
A composition of vitroceramic type comprising, in mol %:
- Ge
- 5-40
- Ga
- <1
- S + Se
- 40-85
- Sb + As
- 4-40
- MX
- 2-25
- Ln
- 0-6
- Adjuvant
- 0-30
- in which:
- M represents at least one alkali metal chosen from Rb, Cs, Na, K and Zn,
- X represents at least one chlorine, bromine or iodine atom,
- Ln represents at least one rare earth metal, and
- Adjuvant represents at least one additive composed of at least one metal and/or at least one metal salt,
- with the sum of the combination of the molar percentages of the components present in said composition being equal to 100.
A noncrystalline vitreous composition comprising, in mol %:
- Ge
- 5-40
- Ga
- <1
- S + Se
- 40-85
- Sb + As
- 4-40
- MX
- 2-25
- Ln
- 0-6
- Adjuvant
- 0-30
- in which:
- M represents at least one alkali metal chosen from Rb, Cs, Na, K and Zn,
- X represents at least one chlorine, bromine or iodine atom,
- Ln represents at least one rare earth metal, and
- Adjuvant represents at least one additive composed of at least one metal and/or at least one metal salt,
- with the sum of the combination of the molar percentages of the components present in said composition being equal to 100.
Dependencies are inferred from the claim text.