Advances in Cryogenic Engineering Materials: Part a

ISBN-13: 9781461398820 / Angielski / Miękka / 2012 / 768 str.

R. W. Fast; F. R. Fickett

Spis treści

Review.- The VAMAS Intercomparison in the Area of Superconducting and Cryogenic Structural Materials.- General Superconductor Theory, Measurement, and Processing.- The Resistive State of a Random Weak Link Network.- Bose-Einstein Gas Model for Tc and Energy Gap for Most Superconductors, Especially the Ceramic Oxides.- Flux Creep in Multifilamentary Conductors of NbTi and Nb3Sn.- Theory of Flux Penetration Effects Below Hc1 in Multifilamentary Superconductors.- Integrity Tests for High-Tc and Conventional Critical-Current Measurement Systems.- Conversion of an 11 MN Extrusion Press for Hydrostatic Extrusion of Superconducting Materials.- Low Temperature Superconductors — Nb3Sn.- Strain Effects in VAMAS Round Robin Test Wires.- An Apparatus for Evaluating Strain Effect of Critical Current in Superconducting Wires in Magnetic Fields up to 16.5 T.- The Characterization of Nb3Sn Superconductors for Use in Magnets of 19 T and Greater.- Strain Effect in an Internally Stabilized Multifilamentary (Nb,Ti)3Sn Superconducting Wire.- Effects of Transverse Stress on the Current Carrying Capacity of Multifilamentary Wires.- Further Studies of Transverse Stress Effects in Cable-in-Conduit Conductors.- Jacket Material Evaluation for Net’s Wind-and-React Superconductor.- Thermal Contraction of Fiberglass-Epoxy Sample Holders Used for Nb3Sn Critical-Current Measurements.- Development of Nb3Sn Superconducting Wire Using an In Situ Processed Large Ingot.- Manufacture and Evaluation of Tin Core Modified Jelly Roll Cables for the US-DPC Coil.- Bronze-Route Nb3Sn Superconducting Wires with Improved Jc and Reduced Bridging.- An Internal Tin Conductor with Nb 1 wt% Ti Filaments.- Development of Niobium-Tin Conductors at ECN.- Experimental Research Nb3Sn-Based Corrugated Superconducting Tube.- Low Temperature Superconductors — NbTi.- AC Loss Measurements of Two Multifilamentary NbTi Composite Strands.- AC Loss Measurements on NbTi Superconducting Wires for the Vamas Round Robin Test.- AC Losses in a Prototype NbTi Cable for the LHC Dipole Magnets.- AC Loss Measurements on Superconductors Using a (Low-Inductive) Coil Geometry.- VAMAS Intercomparison of AC Loss Measurement: Japanese Results.- Anomalous Low Hysteresis Losses in NbTi Superconductors with Very Fine Filaments.- Magnetic Characteristics and Measurements of Filamentary Nb-Ti Wire for the Superconducting Super Collider.- The Effect of Flux Creep on the Magnetization Field in the SSC Dipole Magnets.- Magnetic Studies of Proximity-Effect Coupling in a Very Closely Spaced Fine-Filament NbTi/CuMn Composite Superconductor.- Low Temperature Specific Heat and Magnetic Susceptibility of NbTi and NbTiMn Alloys.- Design of Coupled or Uncoupled Multifilamentary SSC-Type Strands with Almost Zero Retained Magnetization at Fields near 0.3 T.- Critical Field Enhancement due to Field Penetration in Fine-Filament Superconductors.- Proximity Effect on Flux Pinning Strength in Superconducting Nb-Ti with Thin ?-Ti Ribbons.- The Transition to the Normal State of a Stabilized Composite Superconductor.- A Study of Quench Current and Stability of High-Current Multi-Strand Cables Having a Cu or a CuNi Matrix.- Restricted, Novel Heat Treatments for Obtaining High Jc in Nb 46.5 wt% Ti.- Influence of Thermomechanical Working Schedules on Structure and Properties of HT-50 and HT-55 Superconductor Alloys.- Effects of Heat Treatments and of Processing Parameters on the Microstructure of Multifilamentary Nb-46.5 wt% Ti Superconductors.- NbTi Superconductors with Artificial Pinning Structures.- The Properties of Industrial Superconducting Composite Wires for the UNK Magnets.- Development of Large Keystone Angle Cable for Dipole Magnet with Ideal Arch Structure.- Low Temperature Superconductors — Newer Materials.- Critical Current Densities of Sn-Doped PbMo6S8 Wires.- Effects of Hot Isostatic Pressing on Superconducting Properties of Nb/ss Sheathed PbMo6S8 Monofilamentary Wires.- Microstructure and Critical Current Densities of PbMo6S8 in Hot-Worked Mo-Sheathed Wires.- Effect of Axial Tensile and Transverse Compressive Stress on Jc and Bc2 of PbMo6S8 and SnMo6S8 Wires.- Improvements in High Field Properties of Continuous Ultrafine Nb3Al MF Superconductor.- Phase Formation and Critical Currents in PM Nb3Al Multifilamentary Wires.- Thin Film Preparation and Device Applications of Epitaxial MgO/NbN Multilayers.- High Temperature Superconductors — YBCO.- Static and Time Dependent Magnetization Studies of Y1Ba2Cu3Oz Thin Films.- Magnetic Studies of YBaCuO Crystal Prepared by Quench and Melt Growth Process.- Flux Pinning and Percolation in High-Tc Oxide Superconductors.- Possible “Proximity Matrix” Route to High Current Conductors.- YBCO Superconductor Susceptibility in an Alternating Magnetic Field.- Magnetic Shielding Properties and Preparation of YBaCuO Superconducting Tubes.- Investigation of the Interface Between a Normal Metal and High Temperature Superconductor.- Effects of Annealing Treatment of Superconductivity in Powder Sintered YBCO.- Preparation of YBa2Cu3Ox Thin Films by Multisource Deposition.- Growth and Superconducting Properties of Y1Ba2Cu3O7-? Thin Films Sputtered on Flexible YSZ Substrates.- Thin Aluminum Oxide Films as Electrical Barriers Between Superconducting Y-Ba-Cu-O Layers.- Preparation of High-Tc Superconducting Thick Films by a Low Pressure Plasma Spraying.- Normal State Radiative Properties of Thin-Film High-Temperature Superconductors.- Josephson Effects in Point Contacts and Bridges Made of YBa2Cu3O7.- Preparation and Patterning of YBa2Cu3Ox Thin Films.- Suspension Spinning of High Tc Oxide Superconductor by Using Polyacrylnitrile.- Spatial Variations in the Transport Properties of YBa2Cu3O7-? Fibers.- A Study of Tape and Wire Processes for High Tc Superconductors.- Inexpensive High Tc Superconducting Wires.- Preliminary Chemical Study for the Manufacture of High Tc Superconducting Wires.- Some Studies of Ag/YBa2Cu3O7 Superconducting Composite Wire and Tape.- Effects of Bending Strain on the Critical Current Density in Superconducting YBa2Cu3Ox Multicore Wires.- Preliminary Design of a High-Temperature Superconducting Transmission Line.- High Temperature Superconductors — Bi-Based.- Preparation of Bi(Pb)SrCaCuO Thin Film with High Tc Phase.- Stabilization of High-Tc Phase in Sputtered BiPbSrCaCuO Films by Post Anneal.- Superconducting Properties of Sintered Pb-Doped Bi Oxide Superconductor Prepared by an Intermediate Repressing Process.- Fabrication and Properties of Flexible Tapes of High-Tc Bi-(Pb)-Sr-Ca-Cu-O Superconductors.- Studies on Bi-(Pb)-Sr-Ca-Cu-O Superconducting Tapes.- Superconducting Properties of Bi-Pb-Sr-Ca-Cu-O System.- Investigation of Noble Metal Substrates and Buffer Layers for BiSrCaCuO Thin Films.- Break Junction Tunneling Spectroscopy of Single Crystal Bismuth-Based High-Temperature Superconductors.- High Temperature Superconductors — Other Ceramics.- Growth of Large (La1-xSrx)2 CuO4 Single Crystals and Reduction of Oxygen Deficit.- Influence of Doping by Microamount Technetium on Superconductivity and Mechanical Property for Thallium System.- Pb2Y0.5Ca0.5Sr2Cu3O8+x Superconducting Ceramics from glass Crystallization.- Pure Metal Cryoconductors.- The Origin and Future of Composite Aluminum Conductors.- Magnetoresistance in Composite Conductors.- Magnetoresistance of Multifilament Al/Al-Alloy Conductors.- Anomalous Magnetoresistance in Al/Al Alloy Composite Conductors.- Measurement of the Electrical Resistivity and Thermal Conductivity of High Purity Aluminum in Magnetic Fields.- Thermal Properties of Composite Aluminum Conductors in the Temperature Range 13–30 K.- AC Loss in a Composite Hyperconductor.- Cryoconductor Materials Testing System.- Mechanical and Electrical Testing of Composite Aluminum Cryoconductors.- Total Plastic Strain and Electrical Resistivity in High Purity Aluminum Cyclically Strained at 4.2 K.- Cyclic-Strain Resistivity in Pure Aluminum at 20 K.- Composite Aluminum Conductor for High Current Density Applications at Cryogenic Temperatures.- Semi-Continuous Hydrostatic Extrusion of Composite Conductors.- Residual Resistance of Ultra High Purity Copper by Sulfate-Electrorefining and Zone-Refining.- Magnetic Materials.- Magnetic Susceptibility of Inconel Alloys 718, 625, and 600 at Cryogenic Temperatures.- The Magnetocaloric Effect in Neodymium.