0
Just have a crack at Sacrificial anode in wikipedia.org.
Wiki User
∙ 13y ago
Add your answer:
Earn +20 pts
What is the anode in a gas water heater?
The sacrificial anode in a Hot Water Tank takes most of the rusting problems away from the tank itself, hence the word "sacrificial!" When the anode has finished its course of use, you will get rusting happening on the walls of your tank which leads to a wrecked and leaking hot water tank. Manufacturers do NOT want home owners to know about these anodes, because if everyone replaced them there would not be any hot water tanks to replace.
Can we connect copper cable between iron and sacrificial zinc?
Will that work to eat up the Zinc(anode) instead the iron pipe ?Will the copper lead the ions to the zinc, or its resistivity will jeopardize the sacrificial protection combination ?thank you
Why does tin protects iron from corrosion?
Tin protects iron from corrosion through a process called sacrificial protection, where the tin acts as a sacrificial anode and corrodes instead of the iron. The tin forms a protective layer over the iron, preventing exposure to moisture and oxygen which are necessary for corrosion to occur. This sacrificial layer of tin can be periodically replaced to maintain the protective barrier.
Why is it nessisary to replace a zinc block from time to time on the bottom of a boat?
It oxidizes. A zinc block on a boat is called a sacrificial or cathodic anode. It reacts better with the electrolyte (salt water) than the metal on the boat.
What are the purposes of zinc anode fitted on the rudder?
The zinc anode, called a "sacrificial" anode, is because the difference between different metals together when they are submerged in water causes galvanic reaction. In short, some metal is going to be gradually eaten away. Very, very slowly in clean fresh water, faster in polluted fresh water, fastest in salt water. The sacrifical anode is zinc, which will erode fastest because of this, thereby making it the ideal metal for the sacrificial anode (if the zinc is eaten away, the other metals won't be). If that happens, the dealership where the motor was purchased can order a new one for you - it's not real expensive, and it should be replaced when it is no more than half eaten away. Very good - but to understand the chemistry behind all this lets look at what happens at the atomic level. We have two metals - your rudder made of steel and the zinc both are going to corrode in any water so both metals are going from Fe (neutral) to Fe +2 and the zinc from Zn (neutral) to Zn +2 the question is - which will happen first - the zinc does and in doing so provides electrons that help prevent the steel (Fe) from giving up its electrons - hence the Zn reacts first (sacrifice its self) and the Fe (rudder) does not react or oxidize
What is a sacrificial anode?
A sacrificial anode is a piece of corrodible metal which is preferentially consumed by electrolytic action.
What is a sacrificial anode and how does it protect galvanized pipe?
A sacrificial anode is used to send stary current to ground through the anode. This wiil cause the anode to be eaten away saving the pipe from this effect. If you put two dissimilar metels together like brass and iron, it can make a weak battery and make a current. Some soils or other environments can cause this effect.
What is a sacrifical metal?
I've never heard that exact phrase used, but I'm guessing you're talking about a sacrificial anode. This is a piece of more active metal that's electrically connected to a piece of metal you want to protect; the sacrificial anode corrodes instead of the less active metal.
Can metal used to provide sacrificial corrosion?
Yes, they metal used is called an "sacrificial anode".
A magnesium rod in a hot water tank is a?
Sacrificial anode.
What is a conventional battery?
In a conventional battery, the anode and cathode are submerged in a elektrolyte
How do you avoid corrosion?
remove one of the essential components fo corrosion-eg moistureinstall a sacrificial anode
Why is use of a sacrificial anode considered to be a way to prevent corrosion?
The anode creates a galvanic cell in which magnesium or zinc will be corroded more quickly than the metal of, let's sa a tank.
What are zinc blocks used for?
As a sacrificial anode on boat hulls and oil drilling rigs etc to prevent corrosion
How do sacrificial metals protect ship's hulls?
Sacrificial metals work in accordance with the "galvanic series" - the potential for current flow from one metal to another. If you put two metals in an electrolyte, of which seawater is a good one, the less noble or "more anodic" metal will corrode and save the more noble or "more cathodic" metal from corroding. Zinc, being both highly anodic and very cheap to purchase, is the standard sacrificial anode on ships.
What is the anode in a gas water heater?
The sacrificial anode in a Hot Water Tank takes most of the rusting problems away from the tank itself, hence the word "sacrificial!" When the anode has finished its course of use, you will get rusting happening on the walls of your tank which leads to a wrecked and leaking hot water tank. Manufacturers do NOT want home owners to know about these anodes, because if everyone replaced them there would not be any hot water tanks to replace.
Can we connect copper cable between iron and sacrificial zinc?
Will that work to eat up the Zinc(anode) instead the iron pipe ?Will the copper lead the ions to the zinc, or its resistivity will jeopardize the sacrificial protection combination ?thank you
