The following five things affect the corrosion. Explain three of them.i. Structural designii. Applied or internal stressesiii. Composition and structureiv. Environmentv. Temperature
Question
The following five things affect the corrosion. Explain three of them.i. Structural designii. Applied or internal stressesiii. Composition and structureiv. Environmentv. Temperature
Solution
Sure, here are explanations for three of the factors that affect corrosion:
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Structural Design: The design of a structure can significantly influence its susceptibility to corrosion. For instance, if a structure has areas where water can accumulate, such as crevices, these areas are more likely to experience corrosion. Similarly, if a structure has areas that are difficult to clean, these areas may also be more susceptible to corrosion. Therefore, a well-designed structure that minimizes these types of areas can help to reduce the risk of corrosion.
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Composition and Structure: The composition and structure of a material can also affect its susceptibility to corrosion. For example, some metals are more resistant to corrosion than others. Stainless steel, for instance, is more resistant to corrosion than regular steel because it contains chromium, which forms a protective layer on the surface of the steel. Similarly, the structure of a material, such as whether it is crystalline or amorphous, can also influence its corrosion resistance.
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Environment: The environment in which a material is located can greatly influence its corrosion rate. Factors such as humidity, salinity, acidity, and the presence of corrosive chemicals can all accelerate corrosion. For example, metals tend to corrode faster in a salty environment, such as near the ocean, than in a dry environment. Similarly, acidic environments can also accelerate corrosion. Therefore, materials that are used in harsh environments need to be specially treated or selected for their corrosion resistance.
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What is the best definition for ‘corrosion’?Damage to a metal by chemical reactions with substances in the environmentDamage to the shape of a metalProtection of a metal by coating it with a more reactive metalDamage to the protective coating surrounding a metal2Which of the following cause rusting? Oxygen and waterWater and heatCarbon dioxide and waterOxygen and heat3What is the chemical name for rust? Iron(III) oxideIron(III) hydroxideHydrated iron(III) oxideHydrated iron(II) oxide4Iron can be protected from rusting by coating it with various materials. Which of the following coatings is known as sacrificial protection? A more reactive metalPlasticPaintOil or grease5Which metal is used to galvanise iron? SteelZincAluminiumMagnesium6What is a disadvantage of sacrificial protection compared with other barrier methods? Very effectiveExpensive Can be used in harsh conditionsNo need to coat the whole surface of the metal
Which of the following attributes crevice corrosion?
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