The solution to Fick's 2nd Law provided in the textbook (Eq. 5.11) for the process of carburization (see textbook Example 5.3 for a reminder). However, if one takes cs=0 c s = 0 , then this expression can also be used for the reverse process of decarburization. I.e., carbon (initially at composition c0 c 0 ) is removed from a component through its surface held at cs=0 c s = 0 . This is described