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Which of the following materials are common for whiskers?

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Which of the following materials are common for whiskers?

(a) Graphite, silicon carbide

(b) Glass, boron

(c) Steel, tungsten

(d) Polymers, ceramics

I had been asked this question at a job interview.

The origin of the question is Fibre Reinforced Composites & Other Composites in portion Composite & Ceramic Materials of Engineering Material & Metallurgy

1 Answer

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Correct option is (a) Graphite, silicon carbide

The best explanation: Whiskers are single crystals having large ratios of length to diameter. The common materials are graphite, silicon nitride, aluminum oxide etc. Glass and boron fall under the category of polymers of fibers. Steel, tungsten, and molybdenum are commonly used as wires.

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