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Which consequence results when applying mechanical stress to ceramic materials?

A)Intergranular fracture surface is formed
B)Significant plastic deformation is induced
C)Increased toughness through crack bridging
D)Enhanced conductivity with dopant migration

💡 Explanation

Ceramics exhibit brittleness because strong ionic bonds limit dislocation movement. Therefore, applied stress leads to intergranular fracture following the Griffith criterion for brittle fracture, rather than plastic deformation seen in ductile materials.

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