A Sourcebook of Titanium Alloy Superconductivity by E.W. Collings PDF

By E.W. Collings

In lower than 20 years the concept that of supercon­ In each box of technological know-how there are one or ductivity has been remodeled from a laboratory members whose commitment, mixed with an innate interest to usable large-scale purposes. within the knowing, lets them have the capacity to snatch, past due 1960's the idea that of filamentary stabilization condense, and clarify to the remainder of us what that published the usefulness of 0 resistance into the sector is all approximately. For the sector of titanium alloy industry, and the industrial forces that force tech­ superconductivity, such somebody is Ted Collings. nology quickly excited by niobium-titanium alloys. They His history as a metallurgist has probably given him are ductile and hence fabricable into functional large­ a unique virtue in realizing superconduc­ accomplishing wires that experience the serious currents and tivity in titanium alloys as the optimization of fields worthwhile for large-scale units. greater than superconducting parameters in those alloys has been ninety% of all present-day purposes of superconductors nearly completely metallurgical. benefits in use titanium alloys. The force to optimize those education and innate talents even though, it really is alloys led to a flood of analysis that has been the author's commitment that's the crucial com­ accumulated, condensed, and analyzed during this volume.

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K Starting Materials. Range TITANIUM-CHROMIUM ALLOYS - THE SUPERCONDUCTING TRANSITION Cr Concentration TABLE 1-7 ::! Co\) N = en CI --t n c: Z CI C) "' = n ""1:1 en c: -< C) rr- :I> c: 3: Z :I> --t ::::j en -< C) rr- :I> n .... 4 wt. %) argon arc mel ted repeatedly on wcch. Measured in the as-cast condltion. 1 5xlO- 6 Torr and swaged to rods , n.

In general \ was a strong function of atomic radius of bombarding ion. Deposition rate 50-300A/min over an area of 1 sq. in. Typical sample thickness 1-5 urn. %). 06 K. 06 Transition Temperature, G. H. H. Schmidt (1973) [Sch73J [De974J V. F. Degtyareva et al. 9, Review including Ti-V 20, 30, 50, 75, 85 at. X 69, 79, 90 at. ). ). From pub 1i shed curve: 10, 14, 29, 39, 49, 59, V; argon-arc Annealed 3 days/ Revi ew of the superconducti ve 1 i terature and discussion with reference to metallurgical microstructure.

2 K were 1 made in fields of up to 11 kOe by moving H: annealing. The measured Strongly irreversible magnetization was noted. H~2/Hpo In a study of the temperature dependence of /2 the lower critical field, magnetization method. : 0 , obtained by smooth extrapolation of H 0 p HpD ' calculated from the Clogston formula, dirty 1 imit. 5 the relationship of flux-flow dissipation to the upper critical field. % (9 alloys) Ti -Mo Nb- Ta Zr-Nb (1965) [5{a65J R. D. Kim et ( 1965) [Shi65J to the theori es of Gar' kov -Goodman.

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