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in my opinion, the value of corrosion rate obtained from certain reading is generally determine general corrosion rate, regardless what type of corrosion occur on a specific surface.
in localized corrosion, where only some spots on surface is exposed to corrosion and other may be covered by film and etc. From my time of study, still didn't fine any research that can determine corrosion rate of localized corrosion unless u have a really micro- instrumentation that can monitor corrosion on the localized spots..
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What else can I help you with?
Can enhanced chlorine level in fresh water lead to corrosion of stainless steel?
yes, it can not only lead to corrosion but a faster corrosion.
Is alloys resist to corrosion?
Alloys can add corrosion resistance to a metal
How can corrosion be reduced?
The corrosion on iron can be reduced by suitable thin layer of element to be electroplated.
What is corrosion technology?
There are four main methods to Control Corrosion: # select a corrosion resistant material or alloy # apply a coating of painting to the object to be protected # used a cathodic protection system # use corrosion inhibitors There are four main methods to Control Corrosion: # select a corrosion resistant material or alloy # apply a coating of painting to the object to be protected # used a cathodic protection system # use corrosion inhibitors
Corrosion is the reaction of a metal with nitrogen in the air?
No corrosion is not a reaction of a metal with nitrogen in the air. Nitrogen in relatively innert and will not normally form chemical compounds. It is the Oxygen in the air that causes the corrosion.
What makes the corrosion rate higher in industrial areas than in urban areas?
Taking a look at the industrial areas,the corrosion rate seems to be higher since the industrial area can be said to be a combination of both an urban centre and a rural centre and invariably has a corrosion rate= corrosion rate of urban + corrosion rate of rural areas
Why would you want to control the rate of corrosion?
You would want to control the rate of corrosion for an object in order to extend the life of that object and/or to be able to observe the corrosion in a controlled situation.
What has the author D Howarth written?
D. Howarth has written: 'Hepple, Howarth and Matthews' Tort' -- subject(s): Cases, Torts 'Crevice corrosion and other localized corrosion behaviour of 3CR12 corrosion-resisting steel in synthetic minewaters'
How does phosphoric acid affect the corrosion resistance of stainless steel?
Phosphoric acid can decrease the corrosion resistance of stainless steel by promoting the formation of localized corrosion, such as pitting and crevice corrosion. This is due to the acid's ability to break down the protective passive film on the stainless steel surface, making it more susceptible to corrosion.
What are the differences between direct and indirect corrosion of metallic materials?
Direct corrosion of metallic materials occurs when the metal is in direct contact with a corrosive substance, leading to localized deterioration of the material. In contrast, indirect corrosion happens when the metal is exposed to a corrosive environment through a medium such as water or air, causing uniform degradation over a larger surface area. Direct corrosion is typically more rapid and localized, while indirect corrosion can be slower and spread out over a larger area. Both types of corrosion can weaken the metal and compromise its structural integrity over time.
Why small anodic area results in intense corrosion?
A small anodic area leads to intense corrosion because it creates a high current density at the anodic site, where metal ions are oxidized and released into the environment. This localized reaction can outpace the surrounding cathodic area, resulting in accelerated metal dissolution. Additionally, the concentration of corrosive species can increase at the anodic site, further exacerbating the corrosion process. Overall, the combination of high current density and localized chemical effects contributes to the intensified corrosion at small anodic areas.
Stress corrosion cracking?
Stress corrosion cracking is a form of localized corrosion that will affect metal causing sudden cracks. This forms of corrosion is typical of certain combination of metal-environments. For example Stainless Steel will crak in contact with Chloride at temperature above approx 60°C, Copper when in contact with ammonia or Carbon Steel in contact with Caustic Solutions.
At what temperature does corrosion start?
rate of corossion is directly proportional to temperature
Why would a metal corrode more quickly in a salt water than distilled water?
In a medium of lower pH (acidic), the rate of corrosion is high. If the pH of medium is below 3 (approximately), even in absence of air severe corrosion takes place due to rapid evolution of hydrogen at cathodic areas, facilitating anodic oxidation of the metal and dissociation of corrosion product, exposing fresh metal surface for corrosion. In distilled water (pH about 7), rate of corrosion is relatively lower.
What is the hardness of neon on Mo Scale?
The scale you seek is Mohs' scale and applies only to solids. Mohs devised this scale about 1812 where talc is 1, gypsum is 2 up to diamond 10. Neon gas would not come under this scale.Adrian
Why is intergranular corrosion considered dangerous in the metallic frames of the aircraft?
Intergranular corrosion in metallic frames of aircraft can lead to localized weakening and structural failure. This type of corrosion attacks the grain boundaries, which are important for maintaining the structural integrity of the material. Failure to detect and mitigate intergranular corrosion can compromise the safety of the aircraft and lead to catastrophic consequences.
Can Skin cancer be cured?
In cases where the lesion is localized and has not spread to other parts of the body, the cure rate is 95-100%.
