Tape Casting and Sintering Quiz
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Questions and Answers

What is the temperature range in which proton conduction is activated in Proton Conducting Oxides?

  • 300-1000ºC (correct)
  • 100-300ºC
  • Above 1000ºC
  • 300-500ºC
  • What is the primary mechanism for proton conduction in Proton Conducting Oxides?

  • Poisoning
  • Molecular sieving
  • Surface diffusion
  • Solution/Diffusion (correct)
  • Which of the following gases can cause swelling and densification issues in proton conductors?

  • H2O
  • H2S
  • H2
  • CO2 (correct)
  • What is the key principle behind the diffusion of protons and oxygen ions in Proton Conducting Oxides?

    <p>Hydration of V-O vacancies</p> Signup and view all the answers

    What is the main focus of the text?

    <p>Hydrogen transport membranes</p> Signup and view all the answers

    What is the estimated flux at 700°C according to the text?

    <p>10 ml/min·cm²</p> Signup and view all the answers

    What are the two successful materials combinations mentioned for asymmetric membranes?

    <p>La6-xWO12-δ (LWO) and BaZr0.8Y0.15Mn0.05O3-δ</p> Signup and view all the answers

    Which characteristic is NOT mentioned as important for the successful manufacturing of asymmetric membranes?

    <p>Fast and scalable availability of materials</p> Signup and view all the answers

    What is the stress exponent value for dislocation creep of BCZY material in H2/Ar environment?

    <p>3</p> Signup and view all the answers

    In which type of atmosphere do silica membranes with carbon substitution exhibit better stability?

    <p>Humid atmosphere</p> Signup and view all the answers

    At what temperature does the sol-gel processing take place for modifying the structure of amorphous silica membranes via binary metal oxides doping?

    <p>200°C</p> Signup and view all the answers

    What is the purpose of pervaporation as mentioned in slide 35?

    <p>Separation of liquids through vaporization</p> Signup and view all the answers

    What is the main requirement for the porous support mentioned in the text?

    <p>Similar thermal expansion coefficient</p> Signup and view all the answers

    At what temperature range is a sintering temperature needed for the membrane's required density?

    <p>1450°C - 1500°C</p> Signup and view all the answers

    What change in porosity is required for the substrate between 1450°C and 1500°C?

    <p>30 µm - 40 µm</p> Signup and view all the answers

    Which sintering treatment resulted in a membrane thickness of 10 µm?

    <p>Sintering at 1400 °C</p> Signup and view all the answers

    What did the creep behavior analysis of BCZY reveal about grain size/density?

    <p>No change in grain size or density observed</p> Signup and view all the answers

    What is the main factor determining the needed temperature range for the membrane's required density?

    <p>Composition of the membrane material</p> Signup and view all the answers

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