Slow-release effect of plant slow-release agent on metal

The slow-release effect of plant slow-release agent on metal is used for metal anticorrosion. Plant corrosion inhibitor is an effective corrosion inhibitor extracted from plants and used for metal corrosion protection. At present, the corrosion inhibitors used mainly come from mineral raw materials, which have some defects, such as high cost, heavy environmental pollution, secondary pollution and difficult degradation. Natural plant corrosion inhibitor is a kind of green environmental protection category. The first patent of corrosion inhibitor in the world is the corrosion inhibitor for pickling steel plate, which is a green corrosion inhibitor. The main ingredient is a mixture of syrup and vegetable oil. Precursors of plant corrosion inhibitors include: Compositae plants, eucalyptus leaves, walnut leaves, bamboo leaves, camphor leaves, distiller's grains, andrographis paniculata, rice bran, Jatropha curcas, Platycladus orientalis, green tea trees, cola trees, etc.