Though it would appear that the extreme polarization of the carbon-fluorine bond would make this mechanism especially reactive with fluorocarbons, the strength of the bond decreases the effectiveness of the mechanism.  
It is most commonly illustrated through reactions with halogenoalkanes, where a reactive species attacks the carbon atom in the carbon-halogen bond.  Though it would appear that the extreme polarization of the carbon-fluorine bond would make this mechanism especially reactive with fluorocarbons, the strength of the bond decreases the effectiveness of the mechanism.  FTP, what is this reaction mechanism, in which a reactant with lone electrons attacks a region with positive charge?
It is most commonly illustrated through reactions with halogenoalkanes, where a reactive species attacks the carbon atom in the carbon-halogen bond.  
nucleophilic substitution (grudgingly accept SN2)