GroupĬhromium was discovered (1797) by the French chemist Nicolas-Louis Vauquelin and isolated as the metal a year later it was named for its multicolored compounds. Pure chrome metal is made by a different process: roasting and leaching chromite to separate it from iron, followed by reduction with carbon and then with aluminum. The industrial production of chromium takes place from chromite ore (mostly FeCr2O4) to ferrochrome, an iron-chromium alloy, through aluminothermic or silicothermic reactions.įerrochrome is then used to make alloys such as stainless steel. Stainless steel and chrome plating together make up 85% of commercial use. An important development in steel production was the discovery that steel can be made highly resistant to corrosion and discoloration by adding metallic chromium to form stainless steel. Polished chrome reflects almost 70% of the visible spectrum and almost 90% of the infrared light.Ĭhrome metal is valued for its high corrosion resistance and hardness. Chromium is the main additive in stainless steel, which gives anti-corrosive properties.Ĭhrome is also valued as a metal that can be polished to a mirror finish while resisting tarnishing. It is a steel-gray, shiny, hard, and brittle transition metal.
What is Chromium Metal ?Ĭhromium is a chemical element with the symbol Cr and the atomic number 24.
But In this article, we Discuss chromium as metal and its properties and uses. It is also used for diabetes, high cholesterol, a hormonal disorder that causes enlarged ovaries with cysts (polycystic ovary syndrome or PCOS), and many other conditions, but there is no good scientific evidence to support most of these uses. Only trivalent chromium is discussed here.Ĭhromium is used for chromium deficiency.
Chromium uses skin#
The other form, hexavalent chromium, is a known toxin that can cause skin problems and lung cancer. Trivalent chromium is found in foods and supplements and is safe for humans.
It is called an “essential trace element” because very small amounts of chromium are necessary for human health.
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