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How to Protect Aluminum Boats in Saltwater | Boating Magazine
�������� ���� �� ������ �������� ��������������� ��������� �� OZON. ������� �����, ����, ������ � �������� ������. �������� �� ���� ������. The Electrolysis of Aluminium Oxide for OCR 21st Century Science C5 Specification. But if you talk about aluminium in the boating world, you will always find someone to remind you of the dangers of electrolysis! But what exactly is electrolysis? Surprisingly, despite its apparent seriousness, the word electrolysis is not a scientific word that defines a specific phenomenon. It is in fact an abuse of language that covers two very different corrosion phenomena. These phenomena must first be well understood and then dealt with appropriately to prevent Aluminum Boats Electrolysis Academy it.

On a boat with bronze, aluminum, galvanized and stainless steel that are connected with bonding wires or simply touching each other and immersed in the lake The more noble metal is the "cathode", the less noble, the "anode". In this process the less noble metal gives up electrons to the more noble thus weakening the metal, otherwise known as "galvanic corrosion".

The "sacrificial" anodes on your shafts, trim tabs etc. This is why it's important to keep your anodes in good condition and never paint them.

Aluminum alloy, and magnesium for fresh and brackish water or zinc for salt water. This topic deserves a little more attention on it's own so take a look at Zincs, Aluminum and Magnesium Anodes.

A vessel suffering from galvanic corrosion is usually the source of it's own problem, although two vessel's linked by shore power grounds can create a galvanic cell between two very close boats. Electrolytic Corrosion commonly referred to as stray current corrosion : Corrosion that results from an electrical source causing a metal in contact with an electrolyte water to become anodic with respect to some other metal in the same electrolyte.

In simple terms a wire touches something it shouldn't, like a faulty bilge pump float or degraded wiring lying in the bilge sending current into the water, causing one metal to give up electrons and corrode.

Again any vessel suffering from this type of corrosion is likely the master of it's own disaster but the culprit could also be a neighboring vessel. This type of corrosion can can eat metals at an alarming rate. I know of one 42' motoryacht that lost both shafts, both rudders and both propellers in a space of less than two weeks. Complicating this picture somewhat is the fact that DC can be super-imposed on your AC wiring through the common ground on board or the ground in the shore power pedestal we all share on the dock.

As all vessels in the marina are connected through shorepower grounds there is potential for widespread damage. Aside from concerns of corrosion there is also potential for electrocution if shorepower cords are allowed to lie in the water let alone the fools that leave their shorepower cord plugged in at the dock while they go out for an afternoon cruise.

Recent tests have shown that AC current from shorepower in the water can also cause corrosion to underwater parts although at a much slower rate than DC. This has been a long argued issue by people who know a lot more about this than me. Ground fault protection systems, galvanic isolators, isolation transformers and impressed current systems are some of the various methods attempting to combat corrosion. Salt water is generally regarded as a more serious breeding ground for marine corrosion as the salt makes the water more conductive however, polluted fresh water can be even more conductive with the right contaminants.

With our aging fleet of pleasure craft it's likely that at some time, less than expert hands have played with your electrical system. If your vessel is suffering from any electrical faults or unusual corrosion consult with an American Boat and Yacht Council Certified marine electrical technician with specific Xtreme Aluminum Boats Yoga corrosion control training or give me a call and I will try to set you up with an expert in this field.

This term is frequently misused due to lack of understanding of the processes involved in corrosion. This process produces Hydrogen and Oxygen. One of the metals is the anode and the other is the cathode. If you put the two in an electrolyte that conducts current, and connect them with a wire, they act pretty much the same way a battery does. A current flows between the two metals. The electrons from one are "sacrificed" and plated somewhat onto the other metal. This happens when you have dissimilar metals such as aluminum and bronze close to each other and in "electrical" contact.

The aluminum disappears. Punch line Do not take advice from or hire a marine electrician who uses the term electrolysis. Galvanic corrosion : Corrosion that occurs at the anode of a galvanic cell. You may remember high school chemistry class where a battery was created by connecting two dissimilar metals with wire and immersing the whole contraption in salted water thereby activating magnetic fields and starting an electrochemical process causing current to flow.

Update:

Croix focuses upon fishing rods. Whilst creation a single thing out of these used drink cans as well as staying out of a aloft half's approach. Thrashbear writes: Hey Kevin, though I am certain it weighs extremely larger than a fifty 5 bruise written weight?.

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