If an aluminum oxide at room temperature (25°C) is placed on hot oven where it's surface...

If an aluminum oxide at room temperature (25°C) is placed on hot oven where it's surface is heated to 100°C at time t=0, how long would it take for the material to reach 80°C, 1 mm from the surface? Thermal diffusivity of the aluminum oxide is 11 cm²/s. The answer should be in milliseconds. Hint: Apply the Fick's second law. SUBMIT YOUR SOLUTION!

material science course

Expert Solution

Give, Initial Temperature of aluminum oxide, = 25 °C Final Temperature reqd.,=100°C

l = 1mm D = 11/s = 1.1 x /sec

We need to calculate, how long would it take for the material to reach, = 80°C

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samet mamat answered 11 months ago

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