Why does the strength of ceramics vary considerably with the

Why does the strength of ceramics vary considerably with the size of ceramic components? Why are ceramics great for use in columns but not in tension applications? How can we improve the fracture toughness of ceramics?

Solution

Ceramics are great in columns because the compressive strength of ceramics is high but tensile strength is low. Since in columns compression stress are applied so ceramics are used

Size of ceramics varies the porosity and with increase in porosity , strength of ceramics varies.

To improve fracture toughness , size of ceramic components should be decreased