신소재공학실험 - The effect of Manganese in carbon steel

Title
(The effect of Manganese in carbon steel.)
Purpose.
The effect of Manganese in carbon steel.
Theory.
Polishing.
Polishing is the process of creating a smooth and shiny surface by rubbing it or using a chemical action, leaving a surface with significant specular reflection and minimal diffuse reflection. When the surface is magnified thousands of times, it usually looks like mountains and valleys. By repeated abrasion, those `mountains` are worn down until they are flat or just small `hills.` The process of polishing with abrasives starts with coarse ones and graduates to fine ones.
Corrosion.
Corrosion can be defined as the disintegration of a material into its constituent atoms due to chemical reactions with its surroundings. In the most common use of the word, this means a loss of electrons of metals reacting with water and oxygen. Weakening of iron due to oxidation of the iron atoms is a well-known example of electrochemi…