Cold Pressing Procedure Influence on Superconducting Properties of Multi-filamentary Bi2223/Ag Tape
During production of multi-filamentary Bi2223/Ag superconducting tape, annealing-cold pres- sing-annealing procedure is adopted. Pressure, pressing speed, friction coefficient and feed is acted as apprais- ing target for studying, designed test projects by orthogonality. The results exhibited that influence of friction coefficient on the tape critical current Ic valve is very notable, the effect of pressure and feed is inferior, and the influence of pressing speed on the Ic valve is least.
Objective ::: The main aim was to evaluate the effect of postponing the curing of the adhesive layer until the first layer of composite resin is applied—hereby oxygen-inhibited layer (OIL) formation and its detrimental effect on the degree of conversion (DC) of self-etch adhesives should be prevented. For this purpose, the degree of conversion and shear bond strength of four current market self-etch adhesives were evaluated, assessing the effect of curing the adhesives anaerobically and then under two different thicknesses of composite resin, and compare this to the samples cured alone and in air.