The surface of a thick steel plate is packed with carbon and is heated to 1000°C and maintained at this temperature to increase the concentration. The carbon concentration at the surface of the plate is maintained at 30 kg/m3. Originally the carbon concentration in the plate is uniform at 8 kg/m3. Calculate the time required for the concentration to go upto 16 kg/m3 at a depth of 1 mm. D = 0.26 × 10–12 m2/s.
prepare a digital marketing plan for a Kadri Pharmacy Limited
November 18, 2016
11:02 pm
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