Nickel plated copper foil (PI) filmIn some cases, such as chrome plating and copper nickel plating supply, insoluble anodes made of lead or lead Buddha alloy are used, which only function to transfer electrons and conduct current. The concentration of chromium ions in the electrolyte needs to be maintained by regularly adding chromium compounds to the plating solution. During electroplating, the quality of the anode material, the composition of the electroplating solution, temperature, current density, energization time, stirring intensity, precipitated impurities, power waveform, etc. can all affect the quality of the coating. When copper foil is plated off, it needs to be controlled during operation. Firstly, the electroplating solution consists of six elements: main salt, additional salt, chelating agent, moderator, anodic activator, and additives.
Tin, like zinc and cadmium coatings, can grow into whiskers under high temperature, humidity, and sealed conditions, known as long hair; 6. After tin plating, re dissolving treatment in hot oil above 231.89 ℃ can obtain a glossy patterned tin layer, which can be used as a decorative coating for daily necessities. Tin plating (5) zinc plating. Zinc is soluble in both acids and bases, hence it is called a metal. Zinc hardly changes in dry air. In humid air, a basic zinc carbonate film will form on the surface of zinc. Zinc has poor corrosion resistance in environments with high temperature, humidity, and organic acids. Nickel plated copper foil is particularly susceptible to corrosion, especially in environments with high temperature, humidity, and organic acids.
Tin plating. Tin has a silver white appearance, with an atomic weight of 118.7, a density of 7.3g/cm ^ 3, a melting point of 231.89 ℃, and atomic valences of divalent and tetravalent. Therefore, the electrochemical equivalents are 2.12g/A · h and 1.107g/A · h, respectively. Tin has the advantages of corrosion resistance, non toxicity, easy soldering, softness, and good ductility.
Tin plating has the following characteristics and uses:
1. High chemical stability;
2. In the electrochemical process, the standard potential of tin deviates from that of iron,
Nickel plated copper foilQuotation, for steel, it is a cathodic coating. The price of nickel plated copper foil can only effectively protect the substrate when the coating has no pores;
3. Tin has good conductivity and is easy to solder;
4. Tin begins to undergo variation during crystallization from -130 ℃, and by -300 ℃, it will completely transform into an isomer of the same crystal form, commonly known as "tin plague". At this point, it has completely lost its properties as tin
Electroplating: Electroplating that involves removing the metal to be plated. 4 Electroplating tank: capable of withstanding and storing electroplated materials, generally considering factors such as strength, corrosion resistance, and temperature.
5. Rectifiers: devices that provide direct current power. Polishing "refers to the operational factors during electroplating, including current density, temperature, waveform of mixing and power supply, etc
en 
