Vitreous compositions of the vitroceramic type, transparent...

Details Vitreous compositions of the vitroceramic type, transparent... Vitreous compositions of the vitroceramic type, transparent...

C - Chemistry, Metallurgy

03

C

C03C 3/32 (2006.01) C03C 4/10 (2006.01) C03C 10/02 (2006.01) C03C 10/16 (2006.01)

Patent

CA 2531438

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.

La présente invention concerne des compositions vitreuses, notamment de type vitrocéramique, transparentes dans l'infrarouge, leurs procédés d'obtention et leurs utilisations. Ces compositions comprennent, en % molaire: Ge 5-40, Ga <1, S + Se 40-85, Sb + As 4-40, MX 2-25, Ln 0-6, Adjuvant 0-30, -M représente au moins un métal alcalin, choisi parmi Rb, Cs, Na, K et Zn, -X représente au moins un atome de chlore, brome ou iode, -Ln représente au moins une terre rare, et -Adjuvant représente au moins un additif constitué par au moins un métal et/ou au moins un sel métallique, avec la somme de l~ensemble des pourcentages molaires des composants présents dans lesdites compositions étant égale à 100.

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