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1985
Journal Article
Titel
Comparative study of the strength properties of slip-cast and of extruded silicon-infiltrated SiC
Abstract
Measurements of crack growth and fracture stress were performed on specimens made of slip-cast and of extruded silicon-infiltrated SiC at room temperature and at 1200 degrees C using the double-torsion test and four-point bending respectively. The extruded material showed slightly superior crack growth and fracture stress properties. At 1200 degrees C, both materials revealed evidence of creep in the crack growth experiment. Lifetimes measured under static and cyclic load were compared with values calculated on the basis of the measured crack growth and fracture stress data. The agreement between the experimental and the calculated lifetimes was satisfactory.