Stress Corrosion of Ceramic Materials

The molecular model for crack growth in SiO2 has been extended to other materials. An electrostatic model for crack growth has been developed to explain high velocity behavior in silicate glasses. Effects of internal stresses in ferroelectric barium titanate have been demonstrated. Indentation fract...

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Bibliographic Details
Main Authors: White,G S, Gonzalez,A C, Cook,R F, Chantikul,P, Richter,H
Format: Report
Language:English
Subjects:
BARIUM TITANATES
BEHAVIOR
CAPACITORS
CERAMIC MATERIALS
Ceramics, Refractories and Glass
CRACK PROPAGATION
CRACKS
ELECTROSTATIC FIELDS
FAILURE(ELECTRONICS)
FRACTURE(MECHANICS)
HIGH VELOCITY
Indentation fracture
INTERNAL
Mechanics
SILICA GLASS
SILICON DIOXIDE
STRESS CORROSION
STRESSES
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Summary:The molecular model for crack growth in SiO2 has been extended to other materials. An electrostatic model for crack growth has been developed to explain high velocity behavior in silicate glasses. Effects of internal stresses in ferroelectric barium titanate have been demonstrated. Indentation fracture studies have been initiated on multilayer capacitors in order to correlate crack-like defects with electrical failures. (Author)