A plate has 0.25 wt% initial carbon concentration and is at 950C. The surface is then exposed tcarbon-rich atmosphere so that the concentration of carbon is maintained at 1.25 wt%. How loit take for the carbon content to reach 0.8 wt% at 0.5 mm below the surface? Diffusivity is 1.6*m2/s.

Given data,C0=Initial carbon concentration=0.25wt% at 9500CCS=suface exposed carbon maintained at 1.25 wt%FINDtime taken for content of 0.80 wt% at a position 0.5 mm below the surfacecalculation of the timen take for content of 0.80 wt% at a position 0.5 mm below the surfacetime taken for content of 0.80 wt% at a position 0.5 mm below the surface is 7.046 hrs

Answered: A plate has 0.25 wt% initial carbon…

Materials Science And Engineering Properties

1st Edition

ISBN:9781111988609

Author:Charles Gilmore

Publisher:Charles Gilmore

Chapter3: The Structure Of Real Materials

Section: Chapter Questions

Problem 3.12P

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A plate has 0.25 wt% initial carbon concentration and is at 950C. The surface is then exposed t
carbon-rich atmosphere so that the concentration of carbon is maintained at 1.25 wt%. How lo
it take for the carbon content to reach 0.8 wt% at 0.5 mm below the surface? Diffusivity is 1.6*
m2/s.

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