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  1. Facial

    Use of steel powder in composites

    How effective is using steel powder in a polymer/ceramic composite matrix? I am wondering this from observing this product called Faststeel which is one of those epoxy putty sticks that claims to be steel-reinforced. I actually think that it will make a material stronger than the matrix...
  2. Facial

    Rust Production

    Or better yet : find an old alley. There are dumpsters with lots of rust chips that can be taken from the ground.
  3. Facial

    Material Choice: Durability, Cost, Weight

    I would aluminum alloy is your best bet if you're making a robot. Normally its pneumatic operations and small motors that power it would want less burden on the weight. But it depends. If you want strength per volume, steel. Simply put, if you have to handle cyclic loads on small parts...
  4. Facial

    Heat-resistant materials

    Yes. This is exactly what I want to find out. Is there something wrong with the mechanical behavior of MgO at high temperatures?
  5. Facial

    Heat-resistant materials

    Great links, but I'm still puzzled as to why MgO isn't as used as often as alumina or zirconia in high-tech refractories. Currently most engineering is focused on ceramic coatings on a metal substrate. Is this due to the high cost of the ceramic? If I remember correctly there is a lot of...
  6. Facial

    Heat-resistant materials

    Zirconia has a very high melting point, about 2700C. This is the primary reason why it is used as a refractory. However, after some preliminary searches, I found another common ceramic material with a melting point higher than that of zirconia - magnesia (MgO), with a melting temperature of...
  7. Facial

    Rust Production

    Yes. Put many small pieces of scrap steel in salt water.
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