Strength and Properties of Ceramics

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Questions and Answers

What happens to the strength of ceramics when they have tiny flaws?

  • It increases due to the flaws.
  • It remains the same regardless of the flaws.
  • It reduces drastically when loaded in tension or bending. (correct)
  • It varies depending on the type of flaw.

What property of ceramics remains high, even when their strength in tension is drastically reduced due to flaws?

  • Thermal conductivity
  • Stress resistance
  • Compressive strength (correct)
  • Impact resistance

What is a common method used to join metal to ceramic in manufacturing?

  • Screwing
  • Welding
  • Riveting
  • Adhesives (correct)

What is recommended for the shapes of commercial ceramic parts based on the text?

<p>Keeping them as simple as possible (C)</p> Signup and view all the answers

What is the typical method used to shape cermets?

<p>Pressing, sintering, and grinding (C)</p> Signup and view all the answers

What process is involved in making Silicon Carbide (SiC)?

<p>Fusing sand and coke at 2200°C (D)</p> Signup and view all the answers

What distinguishes Silicon Carbide (SiC) as a material?

<p>Brittleness (B)</p> Signup and view all the answers

In what field are SiC fibers like Nicalon commonly used as reinforcement?

<p>Composite materials industry (C)</p> Signup and view all the answers

What process creates a glassy phase in traditional ceramics like brick and stoneware?

<p>Firing (B)</p> Signup and view all the answers

Which of the following compounds is NOT commonly used in the production of technical ceramics?

<p>Iron oxide (D)</p> Signup and view all the answers

What are the unique properties of alumina among technical ceramics?

<p>High thermal conductivity and high melting point (A)</p> Signup and view all the answers

How are technical ceramics like alumina typically manufactured?

<p>Synthesized by chemical reactions (A)</p> Signup and view all the answers

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