Corrosion vs Corrasion

Corrosion [ kəˈroʊ ʒən ]

Corrosion is a natural process that converts a refined metal into a more chemically stable form such as oxide, hydroxide, carbonate or sulfide. It is the gradual destruction of materials (usually a metal) by chemical and/or electrochemical reaction with their environment. Corrosion engineering is the field dedicated to controlling and preventing corrosion.

• the act or process of corroding; condition of being corroded.
• a product of corroding, as rust.
• a process in which a solid, esp a metal, is eaten away and changed by a chemical action, as in the oxidation of iron in the presence of water by an electrolytic process
• slow deterioration by being eaten or worn away
• the condition produced by or the product of corrosion
• The breaking down or destruction of a material, especially a metal, through chemical reactions. The most common form of corrosion is rusting, which occurs when iron combines with oxygen and water.

Corrasion [ kəˈreɪ ʒən ]

Corrasion is a geomorphological term for the process of mechanical erosion of the earth's surface caused when materials are transported across it by running water, waves, glaciers, wind or gravitational movement downslope. An example is the wearing away of rock on a river or seabed by the impact or grinding action of particles moving with the water. The resultant effect on the rock is called abrasion.

• the mechanical erosion of soil and rock by the abrasive action of particles set in motion by running water, wind, glacial ice, and gravity.
• erosion of a rock surface by rock fragments transported over it by water, wind, or ice

• 1. They are sprayed with oil to prevent corrosion.
• 2. Look for signs of corrosion.
• 3. Clean off any corrosion before applying the paint.
• 4. Some substances resist corrosion by air or water.
• 5. Zinc is used to protect other metals from corrosion.
• 6. Corrosion is not covered by the warranty.
• 7. Check for signs of corrosion.
• 8. There was a lot of corrosion on the bottom of the car.
• 9. The surface corrosion was worst where the paint had flaked off.
• 10. If left unchecked, corrosion will eventually weaken the pipeline.

• (1) Notch and groove were produced on fiber's surface by plasma's pHysical bump and corrasion, meanwhile oxygenic or nitrogenic radicals were also grafted on the surface.
• (2) The palaeostructure high part of Carboniferous in Indosinian epoch is favourable to the development of burial corrasion pores.
• (3) The present models of forecasting initial corrosion time of steel-bar are only applicable to single-factor action environment, either concrete carbonization or chloride ions corrasion.
• (4) The tracing method of radioactive nuclide in soil environment is widely applicated in studying soil corrasion.
• (5) Although karst pore system was packed again after forming, it provides conditions for the development of burial corrasion pores.