Uzbekistan handicrafts



Yüklə 270 Kb.
səhifə9/9
tarix27.09.2023
ölçüsü270 Kb.
#149836
1   2   3   4   5   6   7   8   9
UZBEKISTAN HANDICRAFTS

Sialon (Silicon Aluminium Oxynitride) has high strength; resistance to thermal shock, chemical and wear resistance, and low density. These ceramics are used in non-ferrous molten metal handling, weld pins, and the chemical industry.

  • Silicon carbide (SiC) is used as a susceptor in microwave furnaces, a commonly used abrasive, and as a refractory material.

  • Silicon nitride (Si3N4) is used as an abrasive powder.

  • Steatite (magnesium silicates) is used as an electrical insulator.

  • Titanium carbide Used in space shuttle re-entry shields and scratchproof watches.

  • Uranium oxide (UO2), used as fuel in nuclear reactors.

  • Yttrium barium copper oxide (YBa2Cu3O7−x), another high temperature superconductor.

  • Zinc oxide (ZnO), which is a semiconductor, and used in the construction of varistors.

  • Zirconium dioxide (zirconia), which in pure form undergoes many phase changes between room temperature and practical sintering temperatures, can be chemically "stabilized" in several different forms. Its high oxygen ion conductivity recommends it for use in fuel cells and automotive oxygen sensors. In another variant, metastable structures can impart transformation toughening for mechanical applications; most ceramic knife blades are made of this material. Partially stabilised zirconia (PSZ) is much less brittle than other ceramics and is used for metal forming tools, valves and liners, abrasive slurries, kitchen knives and bearings subject to severe abrasion.[16]

    Yüklə 270 Kb.

    Dostları ilə paylaş:
  • 1   2   3   4   5   6   7   8   9




    Verilənlər bazası müəlliflik hüququ ilə müdafiə olunur ©azkurs.org 2024
    rəhbərliyinə müraciət

    gir | qeydiyyatdan keç
        Ana səhifə


    yükləyin