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Cementite (or iron carbide) is a compound of iron and carbon, more precisely an intermediate transition metal carbide with the formula Fe 3 C. By weight, it is 6.67% carbon and 93.3% iron. By weight, it is 6.67% carbon and 93.3% iron.
US Army map indicating War Zones C, D, and the Iron Triangle, circa 1965-1967. The Iron Triangle (Vietnamese:Tam Giác Sắt) was a 120 square miles (310 km 2) area in the Bình Dương Province of Vietnam, so named due to it being a stronghold of Viet Minh activity during the war.
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In late 2015, the plant outputted the first hot rolled coil manufactured in Vietnam. [11] "Phase 1" Blast furnace iron production was scheduled to begin in 2016, with two blast furnaces at the plant having a total production capacity of 7.5 MT pa; approximately 6 MT were for flat steel production, and 1.5 MT for rebar and other rolled steels. [12]
iron: ferrite, ferritic steel; iron: austenite, austenitic steel; iron carbide: cementite, Fe3C. It shows a eutectic and a eutectoid; these phases crystallise as a stacking of fine strips of pure phases (iron and cementite) in case of the eutectoid, or a pure iron containing small balls of cementite for the eutectic.
Boron carbide, B 4 C, on the other hand, has an unusual structure which includes icosahedral boron units linked by carbon atoms. In this respect boron carbide is similar to the boron rich borides. Both silicon carbide (also known as carborundum) and boron carbide are very hard materials and refractory. Both materials are important industrially.
Cohenite is a naturally occurring iron carbide mineral with the chemical structure (Fe, Ni, Co) 3 C.This forms a hard, shiny, silver mineral which was named by E. Weinschenk in 1889 after the German mineralogist Emil Cohen, who first described and analysed material from the Magura meteorite found near Slanica, Žilina Region, Slovakia. [3]
The Thach Khe mine is a large iron mine located in northern Vietnam in the Hà Tĩnh Province.Thach Khe represents one of the largest iron ore reserves in Vietnam and in the world having estimated reserves of 550 million tonnes of ore grading 42% iron metal.