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What is platinum in its pure form?
It is a whitish, highly-malleable metal but with hardness equal to iron and highly resistant to corrosion. When impure, as with osmium or rhodium, it is more brittle.
Why does chromium in stainless steels make them more corrosion resistant in many environments than plain carbon steels?
Chromium forms a tough, adherent ,extremely corrosion resistant, oxide - chromium oxide on the surface. It is the chromium oxide that is extremely corrosion resistant. It also adheres extremely well. Iron oxide - rust does not adhere well - all to do with the Pilling-Bedworth ratio. It is also why Aluminum is very corrosion resistant. It forms a thin adherent layer of aluminum oxide on the surface.
Why is ferrous alloy has more corrosion resistant then iron?
An alloy is a mixture of metals and a ferrous alloy is an alloy who's main constituent is iron. Iron in itself is extremely susceptible to corrosion, however, with the addition of other metals to create a ferrous alloy, such as the addition of slag (Such as in wrought iron), Nickel (Alnico, Invar, etc), Maganese (Bismanthol), Chromium (Kanthal), Titanium (Ferrotitanium) and so on give the alloy it's corrosion resistance. So, in short, almost, if not all ferrous alloys contain a constituent that is corrosion resistant, hence why ferrous alloys are more resistant to corrosion that straight iron.
Why is lead used for fishing sinkers?
Lead sinkers are used to keep the bait anchored to the bottom of the water body. The sinkers come in many different shapes and sizes for different fishing situations. Lead is used because it has a high density and low cost. Some competitive anglers are using tungsten weights which have a higher density (and therefore a lower profile) but they are significantly more expensive. Tungsten is also better for the environment,.
Does the brass corrode?
Yes Brass can corrode especially if coupled to a more noble metal in which case it will undergo Galvanic Corrosion. Amines and Nitrogen containing compounds can cause Stress Corrosion Cracking.
What is the Metal is corrosion resistant?
Well the way you phrased your question is that one is more than another but actually there are multiple such as Nickel,Aluminum,and Gold. Whitch are all equally corrosion resistant.
Why are alloys more resistant to corrosion than pure metals?
They are not always. Pure metals like gold never rust. Aluminum is also very corrosion resistant and its alloys not necessarily more so. Chromium is another metal that is extremely corrosion resistant and is alloyed with Iron and carbon to make a type of stainless steel.
What material is better - stainless steel or carbon steel?
It depends on the applications. Stainless Steel is more corrosion resistant and more expensive. Carbon Steel is cheaper and less corrosion resistant.
What is platinum in its pure form?
It is a whitish, highly-malleable metal but with hardness equal to iron and highly resistant to corrosion. When impure, as with osmium or rhodium, it is more brittle.
What happens to galvanised iron which is exposed to air and water?
It is more resistant to corrosion.
Why do plastic frames need no painting?
because they are plastic....
What metal can be rusted?
anything that can be gabifyedThey all can although some need a little more encouragement than others. Gold is the most resistant to corrosion.
Will an acid cause corrosion?
Yes an acid can cause corrosion. It depends on the material considered and the concentration of the acid. The reaction involved in the corrosion process in acidic solution is the cathodic reduction of Hydrogen ion H+ to give Hydrogen gas H2. H+(solution) + electron -----> H2 (gas) the metal corrosion reaction is the anodic oxidation: Metal -------> Metal n+ + n electrons This is for example the corrosion process of Iron or Carbon Steel in contact with an acidic solution. Stainless Steel or Nickel alloy are more resistant to acid solution and are corrored only by some acids. V. Acids results in over $12 billion of corrosion related costs a year in mining, pulp & paper manufacturing, petroleum refining, and chemical manufacturing. Acid resistant plating (high phosphorus electroless nickel) is commonly used to limit corrosion in highly acidic environments.
Why is aluminium used in airoplanes?
because it is ductile, malleable and more importantly light weight and resistant to corrosion
Why does chromium in stainless steels make them more corrosion resistant in many environments than plain carbon steels?
Chromium forms a tough, adherent ,extremely corrosion resistant, oxide - chromium oxide on the surface. It is the chromium oxide that is extremely corrosion resistant. It also adheres extremely well. Iron oxide - rust does not adhere well - all to do with the Pilling-Bedworth ratio. It is also why Aluminum is very corrosion resistant. It forms a thin adherent layer of aluminum oxide on the surface.
Corrosion?
Corrosion is a natural process, which converts a refined metal to a more stable form, such as its oxide, hydroxide, or sulfide.
Define corrosion?
Corrosion is a natural process, which converts a refined metal to a more stable form, such as its oxide, hydroxide, or sulfide.
