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A fluorocarbon is a hydrocarbon in which hydrogen atoms are replaced (wholly or in part) by fluorine. Because of the stability of the carbon-fluorine bond, they are inert and heat-resistant. Thus they can be used in artificial joints in the body, and where hydrocarbons would be decomposed by heat, such as in spacecraft heat shields, the coating of nonstick pans, or as lubricants (see lubrication). Liquid fluorocarbons are used as refrigerants.

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