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If the coefficient of thermal expansion of an alloy is 14times 10^-6^circ C and that of the ceramic is 10times 10^-6^circ C , when the ceramic is fired onto the alloy and cooled to room temperature, the ceramic will be in which of the following? a. There will be no net compression or tension in the ceramic b. Tension c. Cannot tell from the informati on given d. Compression

Вопрос

If the coefficient of thermal expansion of an alloy is 14times 10^-6^circ C and that of the ceramic is 10times 10^-6^circ C , when the ceramic is fired onto the alloy and cooled to room temperature, the ceramic will be in which of the following? a. There will be no net compression or tension in the ceramic b. Tension c. Cannot tell from the informati on given d. Compression

If the coefficient of thermal expansion of an alloy is 14times 10^-6^circ C and that of the ceramic is 10times 10^-6^circ C , when the ceramic is fired onto the alloy and cooled to room temperature, the ceramic will be in which of the following? a. There will be no net compression or tension in the ceramic b. Tension c. Cannot tell from the informati on given d. Compression

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The correct answer is b. Tension.<br /><br />When the ceramic is fired onto the alloy and cooled to room temperature, the difference in the coefficients of thermal expansion between the alloy and the ceramic will cause the ceramic to expand more than the alloy. This will result in tension in the ceramic.
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