EFFECT OF INTERFACIAL BONDING ON STRENGTH OF A MODEL TWO-PHASE SYSTEM (thesis)

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Abstract
Model systems consisting of tungsten spheres in a dense glassy matrix were fabricated by vacuum hot-pressing. Metal-glass interfacial adherence was achieved while development of crystalline phases in the glass was avoided. lnterpretation rested on the existence of a model surface on which the introduction of flaws could be controlled. A new criterion based on the limitation of flaw size is advanced to explain the effect of second-phase inclusions on strengih in brittle systems. The roles of surface treatment and internal stresses for bonded and nonbonded inclusions are outlined in the context of this hypothesis. (auth)

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