Carbide precipitation is the combining of ____.

Carbide precipitation is the combining of ____.

• A. Carbide with Water
• B. Carbon with Oxygen
• C. Carbon and Chromium
• D. Carbide with Hydrogen

Answer: (C)

Carbide precipitation occurs when carbon atoms combine with a carbide-forming metal in an alloy, most commonly chromium in stainless steels, to form chromium carbide. These carbides tend to precipitate along grain boundaries during heating in the sensitization temperature range, which can deplete chromium from the surrounding matrix and reduce corrosion resistance. Since carbides are compounds of carbon with a metal, the pairing is carbon with chromium, not with water, oxygen, or hydrogen. Water or oxygen would form oxides or other compounds, and hydrogen does not form the carbide phase in this context.

Carbide precipitation occurs when carbon atoms combine with a carbide-forming metal in an alloy, most commonly chromium in stainless steels, to form chromium carbide. These carbides tend to precipitate along grain boundaries during heating in the sensitization temperature range, which can deplete chromium from the surrounding matrix and reduce corrosion resistance. Since carbides are compounds of carbon with a metal, the pairing is carbon with chromium, not with water, oxygen, or hydrogen. Water or oxygen would form oxides or other compounds, and hydrogen does not form the carbide phase in this context.