Glass-to-Metal Seals. II

This is a continuation of the work reported in 1934. The greater part of the paper is devoted to a discussion of the properties of iron-nickel-cobalt alloys, especially the composition Fe 54 percent, Ni 31 percent, Co 15 percent—called fernico—including sensitiveness to impurities and polymorphism. Three new glass-metal combinations are described, the metals being 42 percent nickel-iron, 26 percent chromium-iron, and pure iron, respectively. The strength of the glass-metal bond is discussed briefly.