Green environment-friendly type inhibitor for HSn70-1 brass

Abstract

The invention discloses a green environment protective inhibitor of HSn70-1 brass, which is compounded by sodium tungstate and phytic acid, wherein the density of sodium tungstate is 10-30mg / L and the density of phytic acid is 10-30mg / L and the total density of inhibitor solution is 40mg / L; the inhibitor displays optimum effect when the density rate of sodium tungstate and phytic acid is 1: 3. The corrosion current of brass is reduced greatly when 3%NaCl solution is added into 40mg / L inhibitor with inhibiting efficiency at 85. 47.

Description

technical field [0001] The invention relates to a corrosion inhibitor for preventing and delaying metal corrosion, in particular to a green environment-friendly corrosion inhibitor for HSn 70-1 brass. Background technique [0002] Metal corrosion is a thermodynamic spontaneous process in which the metal becomes an oxidized state when the metal acts on the corrosive medium in the environment. According to literature reports, the annual economic loss due to metal corrosion can account for 1.5-2.4% of a country's gross national product. In order to deal with metal corrosion, people use more and more corrosion inhibitors, but most of the corrosion inhibitors currently used are not green and environmentally friendly corrosion inhibitors, which will more or less cause harm to the environment. my country is a country rich in tungsten resources, and its tungsten reserves account for more than 51% of the world's total reserves, and tungsten compounds are almost non-toxic, and coolin...

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Problems solved by technology

At present, there have been some studies on the application of these two corrosion inhibitors at home and abroad, but the research on the corrosion inhibition effect of sodium tungstate and phytic acid on HSn70-1 brass has not been reported yet.

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