Electrochemistry called cathode electrode connected to the negative pole of the current source. This concept is related to the process of electrolysis. During this process, the cathode reduction reaction occurs. Electrolysis to overestimate the value of the industry is difficult. This method provides purified metals, alkali and a number of other important substances and compounds.
Consider the copper cathode. This metal has a very high purity copper cathode M0k grade contains not less than 99.97% pure copper.
What is so good this metal? The following are the main advantages:
- Very high corrosion resistance of copper;
- Cathodic copper has a high electrical conductivity (low resistivity);
- Excellent thermal conductivity;
- Cathode copper is characterized by good mechanical strength (valid for copper at all important in electrical engineering).
Today in Russia according to GOST there are more than 10 grades of copper. Each of them has its purpose. Copper cathodes, and this brand M00k, M0k, M1k and m2K, obtained during the electrolytic refining. During electrolysis, the purified metal is deposited at the cathode.
Copper for electrical industry obtained melting the cathodes, that is, all the same copper electrodes. This marks M00, M0 and M1. The numbers after the letter "M" shows purity copper. Stamps with the highest content of pure metal - M00k and M00b (second - oxygen-free).
The main specifications and technical documentation - GOST 546-2001 "Copper cathodes. Specifications "and GOST 859-2001" Copper. Stamps ".
Below is the percentage of impurities in the cathode copper M0k mark according to GOST 859-2001.
Iron - up to 0,001%;
Nickel - 0.001%;
Sulfur - up to 0.002%;
Phosphorus - up to 0.001%;
Arsenic - 0.001%;
Lead - up to 0.002%;
Zinc - 0.001%;
Silver - up to 0.002%;
Oxygen - 0.015%;
Antimony - 0.001%;
Bismuth - 0.0005%;
Tin - 0.001%.

Download Non-Ferrous Metals Catalogue in PDF