Question: 4. The Cu grains are embedded in a Al2O3 sample forming some grain boundaries. Find the tension on the grain boundary T if the

4. The Cu grains are embedded in a Al2O3 sample forming some grain boundaries. Find the tension on the grain boundary T if the angle theta 0=/3 and interfacial tension Cu/ Al2O3 is 1000mN/m. (10 points) T Cu 0 AlO3 T T

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