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Glass Ceramics Characteristics Quiz
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Glass Ceramics Characteristics Quiz

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@DependableElm

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Questions and Answers

What is a defining characteristic of glass ceramics?

  • Inability to be shaped using ordinary molding methods
  • Exceptionally low melting point
  • Ability to crystalize to some extent (correct)
  • Minimal resistance to temperature and thermal shock
  • What is a typical use of glass ceramics?

  • Public aquariums
  • Vehicle windshields
  • Building windows
  • Envelopes for high-temperature lamps (correct)
  • Which type of glass is mentioned as being used for cooking purposes?

  • Soda-lime glass
  • Glass ceramics (correct)
  • Fused silica glass
  • Borosilicate glass
  • What material is described as the result of the erosion of the Earth's crust over time in the text?

    <p>Clay</p> Signup and view all the answers

    What is the main component of soda-lime glass?

    <p>70-75% SiO2</p> Signup and view all the answers

    How does borosilicate glass differ from soda-lime glass?

    <p>It has a higher expansion coefficient</p> Signup and view all the answers

    What are some typical uses of borosilicate glass?

    <p>Electrical insulators and telescope mirrors</p> Signup and view all the answers

    Which type of glass is known for its great transparency?

    <p>Silica glass</p> Signup and view all the answers

    What happens to the strength of ceramics when they have tiny flaws and are loaded in tension or bending?

    <p>It drastically reduces</p> Signup and view all the answers

    Why are metal inserts not easily molded into ceramics?

    <p>High firing temperatures prevent it</p> Signup and view all the answers

    What is the recommended draft angle for ceramic shapes to avoid issues during manufacturing?

    <p>At least 5 degrees</p> Signup and view all the answers

    How are most technical ceramics typically formed before being shaped and fired?

    <p>Starting as powders that are pressed or molded</p> Signup and view all the answers

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