Magnesium Oxide For Electronics
Ceramics with magnesium oxide as the main component. It is cubic crystal system, NaCl type structure. The melting point of pure magnesium oxide is 2800℃±13℃. Its Mohs hardness is 6, tensile strength, compressive strength and flexural strength are much lower than sintered Al2O3, its high temperature strength is also lower, suitable for what kind of electronic ceramics.
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MgO is a good insulator, resistivity >1014Ω-cm at room temperature, with the temperature increases, the resistivity decreases sharply. MgO ceramics is a typical alkaline refractory material, in the oxidizing atmosphere or nitrogen protection can work stably up to 2400 ℃; in the reducing atmosphere MgO will decompose, in the form of magnesium metal volatilization, in the vacuum at 1600 ℃ began to volatilize a lot; Fe, Zn, Pb, Cu, M and other metals can not reduce the effect on it. The industry is also suitable for smelting high purity uranium and thorium; can also be used as thermocouple protection casing. It can also be used as thermocouple protection casing. It can be used as radome and infrared radiation transmission window material by its nature of electromagnetic wave passage.
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