How Does Sodium Tungstate Delay Metal Corrosion
Corrosion inhibitor is a kind of substance which can prevent or retard the corrosion of metal in environmental medium under low concentration. It can be divided into three kinds: inorganic inhibitor, organic inhibitor and polymer inhibitor. Commonly used cooling water corrosion inhibitors are chromate, nitrite, phosphate and so on, but they all have one characteristic, that is, toxic. With the enhancement of human's environmental protection consciousness, the development and application of low toxic or nontoxic inhibitors have been paid attention to. Sodium tungstate is one of inorganic inhibitors. It is used as a metal corrosion inhibitor because of its low toxicity, no harm to environment, human body and crops, and no microorganism breeding. Using sodium tungstate as a metal is a corrosion inhibitor, not only effective, but also green. Some scholars used sodium tungstate inhibitor to test the corrosion inhibition of sea water on carbon steel, in the experiment, ...