缓蚀剂（Corrosion inhibitor）.docVIP

缓蚀剂（Corrosion inhibitor） Abstract: in the process of pickling, when removing scale and rust, H+ ion will corrode the metal matrix and lead to hydrogen embrittlement. Practice has proved that adding corrosion inhibitors in the pickling agent can greatly reduce the corrosion of metal matrix. Therefore, inhibitors are inhibitors of corrosion in chemical cleaning. After cleaning, adding the passivation agent can protect the metal, so passivation is necessary to prevent the metal surface from rusting again. First, the role of corrosion inhibitors, corrosion inhibitors are slow metal corrosion additives, is a metal corrosion inhibition of the general term of chemical drugs. It is generally required to add a small amount of inhibitor in the acid bath, that is, a strong inhibition of metal...... In the process of pickling, to remove scale and rust, H+ ion will corrode the metal matrix and lead to hydrogen embrittlement. Practice has proved that adding corrosion inhibitors in the pickling agent can greatly reduce the corrosion of metal matrix. Therefore, inhibitors are inhibitors of corrosion in chemical cleaning. After cleaning, adding the passivation agent can protect the metal, so passivation is necessary to prevent the metal surface from rusting again. First, the role of corrosion inhibitors Inhibitors are the additives that slow down the corrosion of metals. They are the general term for chemicals that inhibit the corrosion of metals. Generally, a small amount of inhibitor is added to the acid bath, which has a strong inhibiting effect on the corrosion of metals during pickling. Metal corrosion, chemical corrosion and electrochemical corrosion. Metal and chemical (acid) corrosion caused by the direct reaction called chemical corrosion, such as increase the chemical reaction of Fe+2HCl==FeCl2+H2. The metal and electrolyte solution form a chemical micro battery, and the anode is oxidized at the cathode of the battery. Electrochemical corrosion rate is much faster than che