12.The ductile to brittle transition temperature in ceramic is around – McqOptions

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1.	12.The ductile to brittle transition temperature in ceramic is around ____ of melting point (Tm)?
A.	0.1 T<sub>m</sub>
B.	0.5 T<sub>m</sub>
C.	0.9 T<sub>m</sub>
D.	0.0001 T<sub>m</sub>
Answer» C. 0.9 T<sub>m</sub>

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