Stress corrosion cracking of Bi-2212 thin rods

The effect of environmental conditions on the mechanical and thermoelectric properties of Bi2Ca2Co1.7Ox textured rods

“…On the other hand, samples immersed in water show a slight dependence with the loading rate, and n about 41. This value is very close to the previously obtained on other plate-like functional ceramics (n¼ 42), Bi 2 Sr 2 CaCu 2 O x , grown by the same technique and tested in the same conditions [24]. These results confirm the effectiveness of LFZ technique to improve the environmental degradation resistance of these textured materials due to the formation of a very low porosity outer region.…”

“…This behaviour is in agreement with a stress corrosion cracking process which allows the interpretation of the mechanical behavior of this material. The stable growth of cracks under applied stresses lower than that for fast fracture (slow crack growth, SCG) is usually studied by means of a power-law function [23,24].…”

Composite Bi-2212/Ag Superconductors Grown by Laser Travelling Floating Zone at Low Rates

“…A second additional advantage is the absence of crucible, avoiding external contamination of textured samples during the processing. However, the poor mechanical characteristics of this kind of materials [12,13] due to their ceramic nature, imposes some limitations for practical applications. Some attempts to improve their mechanical behavior have been performed by means of Ag addition on BSCCO compounds [9,14] and other plate like grain ceramics [15].…”