CAMG

CaMg denotes a binary alloy composed of calcium and magnesium. It is typically produced by direct alloying of the two metals under protective conditions and cast into ingots, briquettes, or powders. The term CaMg can refer to a range of compositions, with Ca-rich or Mg-rich variants depending on the intended application. The alloy is highly reactive and tends to form a passivating oxide layer on exposure to air.

In metallurgy, calcium–magnesium alloys are used as desulfurizers and deoxidizers in steelmaking and ironmaking, helping to remove impurities and influence microstructure. They can also function as grain refiners or inoculants in certain casting alloys, including aluminum and gray iron, where they promote more uniform grain size and can improve mechanical properties. In some specialized processes, CaMg alloys act as reducing agents or precursors for calcium- and magnesium-containing intermetallic compounds.

Handling and safety for CaMg require strict measures due to its reactivity. The alloy readily reacts with moisture and oxygen, releasing hydrogen gas and heat, potentially leading to ignition. It should be stored under inert atmosphere or within oil and handled with appropriate protective equipment in facilities designed for reactive metals.

Environmental considerations emphasize containment of spills and avoidance of moisture contact, with disposal and recycling handled as hazardous materials under local regulations. The reactivity and variability of composition mean that practical use of CaMg is typically confined to controlled industrial settings, with properties and performance depending on the exact Ca/Mg ratio and processing history.

See also: Calcium, Magnesium, Alloys, Desulfurization, Inoculants, Grain refinement.

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