Yttrium oxide, also known as yttria, is an oxide of yttrium metal. The rare earth metal oxide is one of the most stable compound. Hence, it is used in applications in several industries. Yttrium oxide possesses several important properties such as high erosion resistance, high hardness, chemical inertness, and mechanical strength. Other ceramics do not exhibit these characteristics. Yttrium oxide also has very high thermal stability and resistance to molten metals. Thus, it is used in refractory materials. The oxide also demonstrates high stability against radiations, primarily UV and microwave radiation. Thus, it is employed as an additive in paints & coatings for high-temperature and radiation applications. Yttrium oxide is also used in the manufacture of yttrium iron garnets for microwave filters and sensors, which are used for gamma rays and x-rays. Another major application of yttrium oxide is in the manufacture of YSZ, i.e. Yttrium Stabilized Zirconia. Yttria is als...
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