100 Questions on Basic Electroplating Knowledge (Part 9)
Separated Letters Gold Metal Logos 41.Why should metals be plated? Answer:When metal is used in different environments, metal corrosion occurs due to the chemical and electrochemical effects of external agents on the metal surface. The result of metal corrosion is not only the loss of the metal itself, but also the loss of value due to damage to the structure of the metal product, resulting in a waste of human and material resources, the value of which is many times greater than the metal itself. Therefore, in the mass production of metal and metal products at the same time, it is necessary to fight against metal corrosion. Electroplating process is to increase the protective properties of metal and improve the quality of the metal surface of one of the most effective methods. Plating of metal products is to protect the metal from corrosion, improve the performance of metal products and increase the aesthetics of the product surface. Separated Letters Gold Metal Logos 42.What is the pH value of the plating solution? Answer: The pH value of plating solution refers to the acidity and alkalinity of the solution. As we know, water is a weak electrolyte, it can also be ionized.Ionization of water is very small, under normal conditions, 10 million liters of water, only one gram molecules of water ionization, that is to say, in each liter of water hydrogen ions and hydroxide ions concentration of 1/100000000 grams of equivalent, therefore, it can be said that: in the neutral aqueous solution, the concentration of hydrogen ions or hydroxide ions for 10-7 grams of equivalent.Hydrogen ions are common to acids and hydroxide ions are common to bases, so the concentration of hydrogen ions and hydroxide ions in a solution directly reflects the acidity or alkalinity of the solution. In a neutral…
