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Zirconia ceramic is also one of the ceramics. According to different materials, it can be divided into zirconia ceramic and zirconia ceramic Zirconia ceramic is a kind of material with zirconia as the main body, which is used in thick film integrated circuit. Zirconia ceramics have good conductivity, mechanical strength and high temperature resistance Zirconia ceramics are mainly composed of magnesium oxide. It belongs to cubic system and NaCl structure The melting point of pure zirconia is 2800 ℃± 13 ℃. Its Mohs hardness is 6, its tensile strength, compressive strength and bending strength are much lower than those of sintered alumina, and its high temperature strength is also lower Zirconia ceramic is a good insulator. The resistivity is more than 1014 Ω· cm at room temperature. With the increase of temperature, the resistivity decreases sharply Zirconia ceramics are typical basic refractories, which can work stably to 2400 ℃ under the protection of oxidizing atmosphere or nitrogen; zirconia will decompose in reducing atmosphere, volatilize in the form of magnesium metal, and start to volatilize in a large amount at 1600 ℃ in vacuum; Fe, Zn, Pb, Cu, m and other metals have no reducing effect on it Zirconia ceramics can be used as crucible for smelting metals, and also for smelting high-purity uranium and thorium in the atomic energy industry; it can also be used as thermocouple protective sheath, namely zirconia ceramics. It can be used as the transmission window material of radome and infrared radiation However, it should be noted that zirconia ceramics need to be washed by ultrasonic wave. Zirconia ceramics are widely used. Because of its superior performance, it has been widely used in modern society.
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