A Nickel-Chromium-Iron Alloy for Sealing to Glass

Effect of composition on the thermal properties and spontaneous emission probabilities of Tm3+-doped TeO2–LiCl glass

“…11 Furthermore, they present large transparency from the near-ultraviolet to the middle-infrared region. For example, Takebe et al 16 reported that the spontaneous emission probabilities of the transitions 1 G 4 → 3 H 5 of Pr 3+ at 1.3 m, 4 F 3/2 → 4 I 11/2 of Nd 3+ at 1.06 m and 4 I 13/2 → 4 I 15/2 of Er 3+ at 1.5 m depend mainly on the ⍀ 6 (|〈||U (6) ||〉 |) 2 term, where only the ⍀ 6 is related to the glass composition. 12 One of the important properties for the evaluation of the host glasses is the spontaneous emission probability for the 4f-4f transitions of the rare-earth ions in them.…”

Debye temperature of tellurite glasses

“…we have computed the optical Debye temperature 0, (IR) @D(IR) = hvIR/k. (7) Adopting the values of the acoustic Debye temperature [18] and comparing them with the present optical Debye temperature, it is clear that O,(IR) is related to O,, [IS] for these glasses. Now to discuss the possibility of correlating between 01, and 0,, it is clear that 01,/0,1 z 3.56 for all glasses.…”

“…Also, tellurite glasses containing transition metal oxides show a conductivity by a factor lo3 higher than silicate, borate, and phosphate containing the same amount of the transition metal oxide [12 to 141. Moreover, the chemical durability is high compared with borate and phosphate glasses [6,15,161. These imply the potential applicability of tellurite glasses as practical amorphous materials.…”

Nickel and High-Nickel Alloys

“…Stanworth (188) described the development of an 47% nickel-6% chromium balance iron which matches the thermal coefficient of expansion of lead glass used in the manufacture of electrical lamps and valves. Binder (2.2) reported the early development of low carbcn N-155 and the influence of hot cold working, soluticn annealing, and precipitation hardening on the structure, room temperature strength ductility, and impact resistance.…”

“…Properties at elevated temperatures are reviewed and creep curves are presented. Stanworth (188) described the development of an 47% nickel-6 % chromium balance iron which matches the thermal coefficient of expansion of lead glass used in the manufacture of electrical lamps and valves. A 43% nickel-57% iron alloy with a 30% copper coating is described (181) for use as leads in electric light bulbs.…”