Pengaruh Ph Larutan Dan Lama Perendaman Terhadap Laju Korosi Baja Aisi 4140 M…

Corrosion is the deterioration of metal by chemical attack or reaction with its environment. It is a constant and continuous problem, often difficult to eliminate completely. One of the method of inhibiting corrosion process is use corrosion inhibitors. Guava leaf extract contains tannins which can be used as inhibitor. AISI 4140 steel is an alloy of nickel and chromium steel. The purpose of th…