Corrosion inhibitor with protection film

Abstract

A corrosion inhibitor with a protection film comprises, by weight, 10-15 parts of sodium phosphate, 1-5 parts of chromate, 1-3 parts of tungstate, 0.5-1 part of nitrite, 8-10 parts of sodium silicate,10-15 parts of calcium carbonate, 2-5 parts of titanium dioxide, 2-5 parts of sodium nitrate and 100-120 parts of water. The corrosion inhibitor for nonferrous metal is reasonable in ratio, low in usage amount during usage, stable in property, environmentally friendly and low in production cost.

Description

technical field [0001] The invention belongs to the technical field of machinery, and in particular relates to a corrosion inhibitor with a protective film. Background technique [0002] Most metals will spontaneously react with air or water under natural conditions, and themselves will be corroded, so there are very few natural pure metals without other impurities in nature. Metals are good conductors, so most metals are prone to react and deteriorate, or oxidize or generate other compounds in the presence of water and electrolytes, which is the reason for metal corrosion without protection. The harm of metal corrosion is huge. Firstly, chemical facilities and municipal pipe networks made of metal castings cannot reach the expected service life due to corrosion, which increases economic costs; secondly, machinery, manned tools, and pressure equipment mainly made of metal components Containers, etc. may not reach the safe level due to metal corrosion, and accidents occur, w...

AI Technical Summary

Problems solved by technology

The harm of metal corrosion is huge. First, chemical facilities and municipal pipe networks made of metal castings cannot reach the expected service life due to corrosion, which increases economic costs; secondly, machinery, manned tools, pressure Containers, etc. may fail to reach the safe level due to metal corrosion, and accidents occur, which increases safety costs; finally, the reserves of metals are limited, and uncontrolled corrosion will consume the reserves of metal deposits on the earth too quickly, as well as production costs and processes. The waste of resources increases the cost of environmental resource protection