Straining of a Bi-2223/Ag ribbon studied by the method of acoustic emission

摘要

The process of cooling of a Bi-2223/Ag ribbon after secondary sintering at 1000K is studied by the method of acoustic emission (AE). The acoustic response is observed below 500 K and increases in intensity with decreasing temperature. It is established that the AE signal variation reflects the plastic flow in the silver coating caused by a difference between the thermal expansion coefficients of silver and the ceramic core of the Bi-2223/Ag ribbon.