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Which of the following is the chief limitation of carbon fibers ?

$(a)\;\text{they reduce readily at temperatures 873-973 k} \\ (b)\;\text{they oxidise readily at temperatures 873-973 k} \\(c)\;\text{they oxidise readily at low temperatures } \\ (d)\;\text{they are non-reactive at room temperatures} $
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The chief limitation of the carbon fibers is that they oxidize readily at temperatures between 873- 973 k especially in the presence of atomic oxygen.
However, a protective coating of silicon carbide is usually applied to prevent high temperature oxidation .
Hence b is the correct answer.
answered Mar 10, 2014 by meena.p
edited Mar 22, 2014 by balaji.thirumalai
 

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