Stress-corrosion cracking in YBa2Cu3O7−x ceramic superconductor
作者： E. Iskevitch , R. Chaim
DOI: 10.1080/09500839008202360
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摘要: Abstract Thin-foil transmission electron microscopy specimens of orthorhombic YBa2Cu3O7−x subjected to residual elastic strains have shown slow crack growth in an atmosphere with low moisture content. Microcracks, initiated by amorphization at the strained edges, propagate alternately along (110) twin boundaries and (001) stacking faults, where strain energy is accumulated locally. The formation carbon-rich amorphous layers lattice planes, followed stress-assisted propagation, resembles stress-corrosion cracking this ceramic superconductor.
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