I. Introduction
Copper, aluminum, steel and its alloys and other materials, in the absence of surface passivation treatment, soon after oxidation, color deepening, affecting its performance. At present, the surface treatment agent of the metal surface is still beautiful. For this study copper, aluminum, steel and its alloys and other materials, corrosion solution, so that it is impregnated, washed after covering a layer of uniform and dense protective film. So that the metal exposed to the air is not prone to chemical corrosion and electrochemical corrosion, greatly enhanced its working characteristics. The general process between the rust or inventory rust method is phosphating treatment, and then passivation of chromic acid or dip oil, to achieve the purpose of rust. And these two post-processing methods are on the human environment pollution and harm, the experimental study, the use of phytic acid and phytate treatment program can achieve the above objectives.
Second, the experimental method
The materials used in this experiment are copper block, aluminum block, steel block and its alloy, cut into 9.5 × 2.8 × 0.3cm3 sheet sample, one end of the hole, the experimental copper block by fine sand cloth pre-grinding, aluminum, Steel block according to conventional treatment, rinse with tap water, into the treatment solution, the specific approach see the use of methods.
Third, the composition
This experiment consists of A, B two parts
Fourth, the preparation and use:
A solution: the ingredients are fully mixed, add deionized water to 600ml, heated to 70 ~ 80 ℃, the copper, aluminum, steel and its alloys for processing. The copper piece is pre-polished and then immersed in the treatment solution for 3 to 5 minutes to remove the washing. Aluminum blocks, steel blocks immersed in the treatment solution shall not exceed 30 seconds, remove the rinse with tap water.
Solution B: Benzotriazole, triethanolamine and tartaric acid were added to 100 ml of deionized water and heated at about 60 ° C. The other salts were added and mixed thoroughly. The deionized water was added to 650 ml and cooled to room temperature. The A solution of copper, aluminum, steel and its alloy at room temperature immersed in the B solution for 10 to 15 seconds, remove the wash can be exposed in the air.
Fifth, the experiment proved that:
1. The experimental temperature is 70 ~ 80 ℃ for the best, high temperature, low impact quality, the best treatment time of 3 to 5 minutes.
2. The treated metal surface is covered with a thin protective film, with a clear metallic luster, and placed long, shiny as ever.
3. The corrosion solution on the environment without any pollution.