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Metallurgical Engineering Miscellaneous In Metallurgy Difficulty: Medium

The two surfaces of a 5 mm thick plate of carbon steel are maintained at a carbon concentration of 10 4 mol. m -3 on one side and zero concentration on the other side. Taking the diffusion coefficient of carbon in austenite to be 10 -11 m -2 .s -1 , the steady state flux (mol.m -3 .s -1 ) through the thickness of the steel is

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