1. Xa umphezulu ukrwela ngento enzima, umoya unokuqhagamshelana ngokuthe ngqo ne-aluminium kunye ne-oxidize indawo eyenzakeleyo kuqala. Kwixesha elizayo, i-oxidation iya kusasazeka ngokuthe ngcembe kwiindawo ezingqongileyo.
2. I-Wheel hub oxidation idla ngokubangelwa yimveliso yeekhemikhali ezonakalisayo. Kodwa xa olu hlobo lwento luhlanjululwe, luhlala lugqwala amavili kunye namavili, kwaye lude luchaphazele nokusebenza kwamatayara, lubangele ukuba amavili ajike abe tyheli kwaye abe ne-oxidized.