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nature : metal plating a method. Electricity use a square waveform, the sine-wave, sawtooth wave and so on. According to different kinds of plating optimized corresponding waveforms. High-frequency pulse plating is intermittent under the current (the derivative short time, just a few tens of microseconds. Disconnect generally greater than the time-derivative several times or more) to replace the conventional electroplating DC. Electroplating pulse at the moment cathode surface has a high current density (density than the DC 5-20 times), because of high transient pulse current density increased cathode polarization role to promote nucleation rate accelerated nuclei slower growth rate, which is the crystallization of fine coating, Bright, high purity, hydrogen evolution and less porosity small. Coating the physical, chemical superior performance, thereby allowing the lower coating thickness, reduce costs, the precious metal electroplating, saving materials, a greater priority transcendent.
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