Theme: ceramics teacher: jo’rayeva maftuna

CONCLUSION
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.


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