A STUDY FOR COMPOUND RARE EARTH CHEMICAL TREATMENT LIQUID BASED ON BRASS SURFACE
Journal Title: Topics in Chemical & Material Engineering (TCME) - Year 2018, Vol 1, Issue 1
Abstract
In this paper, the optimum technological conditions of brass composite rare earth chemical treatment liquid were obtained by orthogonal test. The process conditions for chemical degreasing, chemical polishing and pickling of brass pretreatment are given in the paper. The brass surface treated with different chemical treatment liquids was evaluated by nitric acid drop method and neutral salt spray test method. The morphology of the brass surface treated with the compound rare earth chemical treatment liquid was studied by electronic scanning electron microscope (SEM), comparing with the surface morphology of brass treated with the treatment solution containing rare earth yttrium salt in the optimal chemical treatment solution. The results show, the nitric acid drip time of brass treated with compound rare earth chemical treatment liquid is 22s. There is no obvious change in the surface of brass in the neutral salt spray experiment 14h. Greatly improves the corrosion resistance of the brass surface. The surface color of the composite rare earth chemical treatment liquid film layer is uniformly golden yellow, the film is smooth and dense, no defects exist.
Authors and Affiliations
Gan Shu-Kun, Liu Shuang, Lv Xue-Fei
Keywords
Related Articles
- EP ID EP413516
- DOI 10.26480/icnmim.01.2018.76.78
- Views 43
- Downloads 0
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