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What disadvantage does silicon carbide have?

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in Engineering Material & Metallurgy by (773k points)
What disadvantage does silicon carbide have?

(a) Tensile strength

(b) Oxidation resistance

(c) Thermal conductivity

(d) Cost

I got this question during a job interview.

Question is taken from Ceramics in chapter Non Metallic Materials of Engineering Material & Metallurgy

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Best answer
The correct answer is (d) Cost

The best I can explain: Silicon carbide has excellent tensile strength, oxidation resistance, and the highest thermal conductivity among the common engineering ceramics. However, it is expensive and only available in limited shapes and sizes. It also has a low strength.

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