The common etching solution used to make circuit boards is ferric chloride solution. This article introduces the use of a mixed solution of hydrochloric acid and hydrogen peroxide to make circuit boards. “Copyright Statement: This article is provided by finishing, part of the content comes from the Internet, if you violate your rights, please contact us to correct. 》
Neither hydrogen peroxide nor hydrochloric acid can be used to corrode the panels. The oxidation ability of hydrogen ion in hydrochloric acid is lower than that of copper ion. Hydrogen peroxide is a strong oxidant, much stronger than iron trichloride. It is definitely no problem to deal with copper, but the product will be dense and insoluble copper oxide, which will prevent the copper under the oxide from contacting with hydrogen peroxide. However, if hydrochloric acid is involved in the reaction, copper oxide will not be formed, but copper chloride dissolved in water will be formed. “Copyright Statement: This article is provided by finishing, part of the content comes from the Internet, if you violate your rights, please contact us to correct. 》
Reaction equation: H2O2 + 2 (HCl) + Cu = CuCl2 + 2 (H2O)
benefit. For example, it is colorless and transparent (industrial hydrochloric acid
Iron ion impurity
(Slightly green), you can observe while corroding, you can fish out the board in time when the corrosion is just clean, so as not to form a jagged edge due to excessive corrosion. Thanks to the strong oxidizing power of hydrogen peroxide, the corrosion rate is very fast, much faster than the ferric chloride solution. And these two things are very
buy,
There are places where building and decoration materials are sold, about two or three dollars a bottle. The only disadvantage of the formula
Cannot be saved,
Active use. Otherwise, under the catalysis of acid, hydrogen peroxide will quickly decompose into oxygen and water and fail. “Copyright Statement: This article is provided by finishing, part of the content comes from the Internet, if you violate your rights, please contact us to correct. 》
We are not doing chemistry experiments. There is no need to consider the ratio carefully. When preparing the solution, pour a bit of each sample and add some water.