Ceramic Structures and Properties
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Questions and Answers

What are ceramics primarily made of?

  • Carbides
  • Oxides (correct)
  • Silicates
  • Nitrides
  • Which type of bonding is found in many ceramics?

  • Combination of ionic and covalent (correct)
  • Metallic
  • Purely ionic
  • Totally covalent
  • What is the tendency of an atom in a molecule to attract the shared pair of electron towards itself called?

  • Polar covalent
  • Ionic
  • Non-Polar covalent
  • Electronegativity (correct)
  • Which material exhibits the highest percentage of ionic character?

    <p>Mg-O</p> Signup and view all the answers

    Which element contributes to the crystal structures in ceramics?

    <p>Non-metallic element</p> Signup and view all the answers

    What kind of bond does silicon nitride (Si3N4) exhibit?

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

    Which property of ceramics is not mentioned in the text?

    <p>Low melting point</p> Signup and view all the answers

    What is the main building criteria for the ceramics crystal structure?

    <p>Charge balance chemical formula</p> Signup and view all the answers

    In which type of bonding are materials characterized by significant hybridization of orbitals and directionality of the bonds?

    <p>Covalent bonding</p> Signup and view all the answers

    What is the crystal structure of diamond?

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

    Which atoms build the base lattice in diamond?

    <p>Carbon atoms</p> Signup and view all the answers

    What kind of structure is typical for purely covalent bonded materials like carbon (Diamond), Si, Ge and SiC?

    <p>Face-centered cubic (FCC)</p> Signup and view all the answers

    What is the coordination number at the center of a face in a body-centered cubic (BCC) unit cell?

    <p>6</p> Signup and view all the answers

    How many interstitial sites are there at the mid of each edge in a face-centered cubic (FCC) unit cell?

    <p>12</p> Signup and view all the answers

    What is the relationship between coordination number and cation-anion radii ratio?

    <p>The coordination number increases with cation-anion radii ratio</p> Signup and view all the answers

    What property arises from the sharing of orbitals in covalent bonded materials?

    <p>Directionality of bonds</p> Signup and view all the answers

    What is the primary focus of the report?

    <p>Air Power Drop Hammers</p> Signup and view all the answers

    Which section of the report discusses the mechanism and operation of a specific type of hammer?

    <p>Section 2.1.1</p> Signup and view all the answers

    What is the key advantage of Lever Spring Hammers mentioned in the report?

    <p>Reduced noise during operation</p> Signup and view all the answers

    Which individual is listed first in the team members' names and IDs?

    <p>Abdelrahman Abdelghaffar</p> Signup and view all the answers

    Who is the report submitted to?

    <p>Prof. Tayseer Ahmed Atia</p> Signup and view all the answers

    Which team number is mentioned in the report?

    <p>Team (3)</p> Signup and view all the answers

    What is the term used for the processes in which there is no lateral constraint for the material movement in the die set?

    <p>Open-die forging</p> Signup and view all the answers

    Which forging equipment provides continuous and controlled force, enabling precise shaping and improved material flow?

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

    What is the main advantage of closed die forging over open-die forging?

    <p>Complex shapes can be formed</p> Signup and view all the answers

    For which type of work are mechanical presses more suitable?

    <p>Large work of deformation in relation to the force</p> Signup and view all the answers

    What kind of forces are often applied through hammers or presses in closed die forging?

    <p>External forces</p> Signup and view all the answers

    What is the term used for the plastic deformation of a bulk metal to a predetermined shape by compressive forces using a hammer or press?

    <p>Bulk metal forming</p> Signup and view all the answers

    What enhances the material properties, including strength and hardness, in the forging process?

    <p>Repeated blows from hammers</p> Signup and view all the answers

    What is known for its flexibility as it allows for the production of a wide range of component sizes and shapes?

    <p>Open-die forging</p> Signup and view all the answers

    What plays a vital role in determining the efficiency of the forging process, ultimately influencing the quality and performance of the forged components?

    <p>Selection of appropriate forging equipment</p> Signup and view all the answers

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