High reliability connector anticorrosive problem of production, have a good reference for use. Add the computer and communications equipment low voltage small current signal level line most of the problems are due to connector contact surface to form a layer of insulating film ( i.e. caused by corrosion ). Corrosion is caused by oxidation or chemical reaction is the metal surface gradually deterioration of a chemical process. Metal contact surface is prone to electrochemical corrosion, when high wet air and ambient trace chemical consistency in contact surface to form an adsorption from electrolyte, produce corrosion. However, corrosion formation also depends on the metal contact surface integrity and chemical activity. If the contact surface to keep for a long time stable ( communication connector required properties ), the surface should be by electroplating or compound is coated with a layer of precious metal ( such as gold ). Metal surface using and maintain appropriate coating helps to prevent corrosion.

Electrochemical corrosion theory

Galvanic corrosion is similar to a battery in the reaction principle of electrolysis process. Therefore, create galvanic corrosion will must have four elements: the electrolyte, anode, cathode and the current channel. Two environmental conditions of relative humidity exceeds 60%, ambient gases such as chlorine, nitrogen dioxide, sulfur dioxide is the presence of electrolytes two formed the main catalyst. High humidity makes water soluble gas to condense the water vapor in contact with the surface, forming a conductive weak acid. ] dZ5N-f4 | localized to the anode and the cathode is composed of contact surface coating layer crack or pore produced by. Microporous bottom base metal forms the anode, and the precious metal coating layer is formed on the cathode. Finally, because of the coating layer, interface, base metal, electrolyte has a conductive, so the current channel is formed. The corrosion rate and corrosion product related. Copper corrosion, microporous, makes the water continues to permeate. But it also react with water to produce more compounds, and further accelerate the corrosion. Nickel corrosion is impervious to moisture, is tightly attached to the metal surface, forming a layer of water vapor barrier layer. The results of electrochemical corrosion of nickel, often get self inhibition.