A history of the CSIRO’s development of high temperature superconducting rf SQUIDs for TEM prospecting.

2006 ◽  
Vol 2006 (1) ◽  
pp. 1-5 ◽  
Author(s):  
Catherine P. Foley ◽  
Keith E. Leslie ◽  
Rex A. Binks
Keyword(s):  
High Temperature ◽  
High Temperature Superconducting ◽  
History Of ◽  
Superconducting Rf ◽  
Rf Squids

Thin film high temperature superconducting RF coils for low field MRI

1994 ◽  
Vol 32 (3) ◽  
pp. 396-400 ◽  
Author(s):  
John G. van Heteren ◽  
Timothy W. James ◽  
Lincoln C. Bourne
Keyword(s):  
Thin Film ◽  
High Temperature ◽  
Rf Coils ◽  
High Temperature Superconducting ◽  
Low Field ◽  
Superconducting Rf ◽  
Low Field Mri

Reprocessing of Sintered and Melt High Temperature Superconducting Materials

1994 ◽  
Vol 344 ◽  
Author(s):  
C. Vipulanandan ◽  
B. Martinz
Keyword(s):  
High Temperature ◽  
Past History ◽  
Silver Powder ◽  
Previous History ◽  
High Temperature Superconducting ◽  
Melting Temperatures ◽  
Bulk Ybco ◽  
Barium Copper ◽  
History Of ◽  
The Cost

AbstractIncreasing use of High Temperature Superconducting Ceramics (HTSC) in various applications and the cost of the new superconducting powder dictated the need for evaluating the potential of reusing the old HTSC material (yittrium-barium-copper oxide (YBCO); YBa2Cu3O7-x) with minimum reprocessing. This study examined various methods to reprocess two years old sintered and melt bulk YBCO ceramics. YBCO components were ground and processed with and without adding various amount of silver powder, organic binders and new YBCO powder. The reprocessed YBCO powder was also characterized at every step of processing using X-ray diffraction (XRD) and Differential Thermal Analysis (DTA) to identify impurities.The old YBCO components were first crushed and then ground using automatic grinder and a jet-mill. The ground powder was then mixed with additives and/or binders and compacted uniaxially to 45 ksi. The range of sintereing temperatures from 905 °C to 980 °C were selected based on the past history of sintering/melting temperatures. The reground powder was found to have impurity phases due to its exposure to carbon dioxide and humidity in the atmosphere. Addition of Ag powder resulted in higher relative densities at lower sintering temperatures. The need for re-calcination of used powders was also considered to improve the performance of reprocessed powders. The sintering temperature was selected based on achieving 85% relative density. The results show that the reprocessed powders have to be sintered at higher temperatures than their previous history. The sintered and melt-textured YBCO made from reprocessed powder had similar or better superconducting properties compared to the new powder.

Superconducting Wind Generators with Capacities of 10 MW and Larger

2020 ◽  
Vol 10 (10) ◽  
pp. 59-67
Author(s):  
Victor N. ANTIPOV ◽  
◽  
Andrey D. GROZOV ◽  
Anna V. IVANOVA ◽  
◽  
...  
Keyword(s):  
High Temperature ◽  
Low Temperature ◽  
Wind Power ◽  
State Of The Art ◽  
Superconducting Materials ◽  
Commercial Application ◽  
Synchronous Generators ◽  
High Temperature Superconducting ◽  
Wind Generators ◽  
Main Factor

The overall dimensions and mass of wind power units with capacities larger than 10 MW can be improved and their cost can be decreased by developing and constructing superconducting synchronous generators. The article analyzes foreign conceptual designs of superconducting synchronous generators based on different principles: with the use of high- and low-temperature superconductivity, fully superconducting or only with a superconducting excitation system, and with the use of different materials (MgB2, Bi2223, YBCO). A high cost of superconducting materials is the main factor impeding commercial application of superconducting generators. In view of the state of the art in the technology for manufacturing superconductors and their cost, a conclusion is drawn, according to which a synchronous gearless superconducting wind generator with a capacity of 10 MW with the field winding made of a high-temperature superconducting material (MgB2, Bi-2223 or YBCO) with the «ferromagnetic stator — ferromagnetic rotor» topology, with the stator diameter equal to 7—9 m, and with the number of poles equal to 32—40 has prospects for its practical use in the nearest future.

TIN

Alloy Digest ◽  
1973 ◽  
Vol 22 (12) ◽  
Keyword(s):  
Fracture Toughness ◽  
Corrosion Resistance ◽  
High Temperature ◽  
Physical Properties ◽  
Heat Treating ◽  
Collapsible Tubes ◽  
Temperature Performance ◽  
History Of ◽  
Important Constituent ◽  
Varied History

Abstract TIN is used as a coating on steel and on other metals and alloys. When alloyed with other metals, it is an important constituent in soft solders, collapsible tubes, pewter ware, costume jewelry, fusable pressure plugs, bronze and bearing linings. It has a long and varied history of commercial and ornamental uses. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness and creep. It also includes information on low and high temperature performance, and corrosion resistance as well as casting, forming, heat treating, machining, and joining. Filing Code: Sn-5. Producer or source: World tin producers (ingots).

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