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Some of these oxides are used in ceramic applications, particularly in glazing. Many metal oxides provide the colours in glazes after being fired at high temperatures.
Iron oxides yield pigments (see Iron oxide pigments) that are widely used in the cosmetic field. They are considered to be nontoxic, moisture resistant, and nonbleeding. Iron oxides graded safe for cosmetic use are produced synthetically in order to avoid the inclusion of ferrous or ferric oxides, and impurities normally found in naturally occurring iron oxides.
Magnetite (under the name Black Oxide) is used for coating steel tools . This protects them from corrosion and gives a pleasing appearance.
It is not difficult to extract iron from ore as compared to the similarly abundant elements aluminum and titanium.
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Iron_oxide". A list of authors is available in Wikipedia.|