Alkali-lead-iron phosphate glass and associated method

Details Alkali-lead-iron phosphate glass and associated method Alkali-lead-iron phosphate glass and associated method

C - Chemistry, Metallurgy

03

C

C03C 3/16 (2006.01) C03C 1/02 (2006.01) C03C 8/24 (2006.01) C03C 27/02 (2006.01) C03C 27/04 (2006.01)

Patent

CA 2133093

2133093 9322250 PCTABS00027 A glass composition and method of preparation utilizes a mixture consisting of phosphorus oxide within the range of about 40 to 49 molar percent, lead oxide within the range of about 10 to 25 molar percent, iron oxide within the range of about 10 to 17 molar percent and an alkali oxide within the range of about 23 to 30 molar percent. The glass resulting from the melting and subsequent solidifying of the mixture possesses a high degree of durability and a coefficient of thermal expansion as high as that of any of a number of metals. Such features render this glass highly desirable in glass-to-metal seal applications.

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