Search Results for current density

Fig. 1 Plot of critical current density versus magnetic flux density to compare properties of powder-in-tube process oxide-base superconductors with that of conventional superconductors. MRI, magnetic resonance imaging; SSC, superconducting supercollider More

Fig. 25 Classical distributions of current density J and power density p v as a function of distance from the workpiece surface due to the skin effect according to Eq 51 and 51a More

Fig. 11 Relative current density in soil as a function of distance from the current source, with the maximum current density of interest 1 ft (0.3 m) from the source. More

Fig. 10 Skin effect. (a) Current density versus distance from surface. (b) Current density and power density distributions as percentage versus penetration depth due to skin effect. Source: Ref 1 More

Fig. 5 Oxidation current density vs. time following rupture of the protective oxide on a stainless steel wire by rapid straining in hot water. A high-peak (bare-surface) current density (generally ≥ 1 A/cm 2 , corresponding to rapid metal dissolution) is followed by repassivation More

Fig. 6 The relationship between (a) the bare-surface current density and (b) the maximum environmentally assisted crack growth rate for various material/environment systems. This demonstrates the Faradaic agreement in the film rupture/slip oxidation between dissolution kinetics More

Fig. 13 Isocontours depicting computed current density distribution (A/mm 2 ) in the sheet-electrode geometry at (a) 5, (b) 20, (c) 40, and (d) 60 ms. Other welding parameters: welding current = 7.0 kA and electrode force = 2.2 kN More

Fig. 2 Relationship between current density and single-electrode potential for electrolytes possessing polishing action over a wide range of voltages and currents More

Fig. 3 Cell voltage as a function of anode current density for electropolishing copper in ortho-H 3 PO 4 (900 g per 1000 mL H 2 O), using a potentiometric circuit More

Fig. 26 Idealized current density versus applied voltage for many common electrolytes. Regions for electrolytic etching and polishing are indicated. More

Fig. 25 Oxidation current density versus time relationship for a strained crack tip. Source: Ref 59 More

Fig. 13 Current density ratio versus nondimensional radius. Time, 2 cycles; R c , radius of contact. Source: Ref 33 More

Fig. 8 Scaling law behavior of the critical current density ( J c ) for (a) several niobium-titanium alloys ( Ref 25 ) and (b) a Nb 3 Sn conductor ( Ref 26 ). In both cases, F p = J c B is plotted, scaled by the maximum value versus the reduced applied magnetic field, h = H a / H More

Fig. 12 Transport current density ( J ) flowing through the superconductor. The flux lines experience a reactive force given by the Lorentz force equation, F L = J × B . In the absence of flux pinning, the Lorentz force will cause the flux lines to flow in a direction perpendicular More

Fig. 28 Plot of critical current density versus strain (since the last precipitation heat treatment) for a multifilamentary composite that received 4, 5, 6, 7, and 8 heat treatments. Courtesy of Supercon, Inc. More

Fig. 20 Unreacted NbSn high-current density composite superconductor wire produced for high-field magnet application using tin-core MJR process. (a) 100× bright field illumination (B.F.). (b) 1000× differential interference contrast (D.I.C.). The 60 subelements in the 0.6 mm (0.024 in.) diam More

Fig. 21 Plot of noncopper hysteresis loss versus noncopper current density of the full range of current and filament size for tin-core (Nb-1%Ti) 3 Sn superconductor. Modified jelly roll method was used. T c was 4.2 K, μ o H c2 of 10 T, and resistivity, ρ, of 10 −13 Ω · m. US-DPC, United More

Fig. 4 Recent critical current density results in PMS wires More

Fig. 3 Plot of critical current density versus external magnetic field at 4.2 K to compare two silver-sheathed powder-in-tube superconducting oxide wires (Bi-2212/Ag and YBa 2 Cu 3 O 7 ) with three conventional multifilamentary wires. J c data is for superconductor cross section, also More

Fig. 5 Plot of critical current density versus external magnetic field at measurement temperature of 77 K to compare sintered powder YBCO tape-shaped wire with melt-processed YBCO tape-shaped wire. Source: Ref 21 More