Glass to nickel-iron alloy seal

摘要

A range of borosilicate glass compositions which are capable of sealing effectively to nickel iron alloys containing up to approximately 52% nickel to form a hermetic seal resistant to thermal shock breakage. The glass is in the composition range percent by weight of: SiO2: 55-66 Al2O3: 4.5-10 Na2O: 0-4 K2O: 3.5-7 B2O3: 19.0-26.0 TiO2