![]() When two dissimilar metals are in contact with one another and placed in an electrolyte (an electrically conductive substance, ie water, especially salty or acidic water), an electrical current begins to flow from one metal to the other (just like the plates of a battery) due to the migration of electrons. Highly active metals (ie, corrosion-susceptible) are aluminum, zinc, magnesium. Corrosion-resistant metals are called "noble metals" and are often highly valued for these properties, such as gold, platinum and silver. However, we have all seen that some metals corrode faster than others. First, let's learn why they occur:Ĭontact Corrosion (from now on, we will refer to it as Galvanic Corrosion)Īlmost all metals will eventually corrode and break down in the presence of an oxidant. There are more than three types of corrosion in marine environments, but let's focus on the latter two contact corrosion and externally induced corrosion can be insidious and mysterious. You can find these products on our Metal Cleaners and Waxes category. There are ways of cleaning, coating and protecting so-called pure metal (such as aluminum, bronze, and brass hardware). This behaviour is similar to Galvanic Corrosion but is electrically induced.Īuto corrosion happens to just about any metal when uncoated and exposed to the elements. Externally Induced Corrosion is caused when an external electrical current causes a metal to become an anode (therefore dissolving).Contact Corrosion is a common source of galvanic corrosion two dissimilar metals in an electrolyte solution cause one metal to dissolve while the other appears unaffected.Auto Corrosion is the corrosion of a metal in an electrolyte - a process self-induced by the inherent imperfect characteristics of the metal - as a simplification, this can be imagined as the mixture of iron and oxygen resulting in rust. ![]() However, if your propellor (and the propellors of everyone nearby) is severely corroded during a single season, obviously something has gone seriously wrong somewhere! Can be used with all lower SDI standards including 6G, 3G, HD and SD SDI.Almost all metals will eventually corrode underwater.No distortion of full 12G/4K UHD SDI broadcast quality signal.Protects equipment from damage by DC static and earth loop voltage built up.Full DC galvanic isolation between equipment, both signal and ground path.An accessory panel is also available for mounting eight isolators in a 1U rack space.įeatures of galvanic isolator LEN L4KGI-02 They can be used both independently and panel mounted, using the integrated mounting flange for mounting through the panels. Transparent to a quality broadcast signal, they are useful in both permanent and temporary installations. An air-mounted barrel version is also available (see model L4KGI-01). It is constructed in a plastic cylinder (for insulation), provided with a BNC connector at each end with D-type plate for mounting on patches with this format. It is valid for use with 12G/4K UHD SDI video and all lower standards, including 6G, 3G, HD and SDI. Miniature in-line 12G/4K UHD SDI panel-mount video signal isolator, which provides Broadcast quality transmission of the video signal while blocking DC and isolating ground.
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