Answered: Question 8 A sheet of steel 3 mm thick…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Transcribed Image Text:Question 8 A sheet of steel 3 mm thick is exposed on one side to a nitrogen-rich atmosphere at 1200°C and is permitted to achieve a steady-state diffusion condition. It is known that from the high- pressure nitrogen-rich side, the concentration of nitrogen on the steel surface is 6 kg/m³. The diffusion coefficient for nitrogen in steel at this temperature is 5x10-11 m²/s, and the diffusion flux is found to be 1.6 x 107 kg/m² s. How far into the sheet from this high-pressure side will the concentration be 2.0 kg/m³? Assume a linear concentration profile. The Fick's first law is given by the equation: dC J = - D dx

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