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a reference electrode is an electrode which has a stable and well-known electrode potential. The high stability of the electrode potential is usually reached by employing a redox system with constant (buffered or saturated) concentrations of each participants of the redox reaction. There are many ways reference electrodes are used. The simplest is when the reference electrode is used as a half cell to build an electrochemical cell. This allows the potential of the other half cell to be determined. there are many types of reference electrodes: aqueous reference electrodes, non-aqueous reference electrodes, pseudo-reference electrodes etc. Mostly the aqueous reference electrodes are in use for potential measurement.

Muscovite dry ground Mica is extensively used in mild steel rutile based welding electrodes. In welding electrodes a core of steel wire is coated uniformly with a “flux” comprising mica as a lagging compound. The mica coating provides two distinctive types of protection to the welding rods. Firstly, it serves in forming a fusible slag and a good seal at the fusion zone on the arc. Secondly, it resists the action of the heat, gaseous and other surrounding atmospheric oxidization. Nothing can substitute Mica for the above application. In fact, it is the nature of mica coating that largely determines the quality of welding electrodes.

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Alloy Coating Electrode, Copper Plated Electrode, Zinc Coating Electrode

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