How Do You Calculate Hardness from Concentration Using Fick's Second Law?

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The discussion centers on a problem involving the calculation of concentration and hardness in steel using Fick's second law. The user is uncertain about how to derive hardness from concentration and depth, despite having the necessary variables. It is suggested that the user should first plot concentration against depth, then use that data to create a hardness versus depth plot based on the provided graph. The key steps involve calculating concentration and then relating it to hardness. Understanding these relationships is crucial for solving the problem effectively.
kpx001
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Can anyone help me solve this problem? I am unsure on what to do
http://yfrog.com/j5flicks2ndp
 
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Can you explain in your own words what the problem is asking? What is happening in the steel, and what variables does the process depend on?
 
i am guessing that they want me to use the graph to get another plot with concentration vs depth... then from that i am to get hardness vs depth. other than that i am confused as well. i have D and D_0 and Q_d and R and T. from this i can get concentration using flicks 2nd law.. but what about hardness and all that?
 
kpx001 said:
i am guessing that they want me to use the graph to get another plot with concentration vs depth... then from that i am to get hardness vs depth. other than that i am confused as well. i have D and D_0 and Q_d and R and T. from this i can get concentration using flicks 2nd law.. but what about hardness and all that?

It looks to me like you're supposed to calculate the concentration as a function of depth, then determine the hardness as a function of depth based on the graph of hardness as a function of concentration.
 

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