Magnesium oxide is a material that no one is unfamiliar with, it is a fairly common basic oxide and is the main raw material for the production of magnesium hydroxide and magnesium metal. Hebei Messi Biology Co., Ltd. said that in the field of electronic ceramics, magnesium oxide has some special excellent properties due to its high melting point of 2800℃. The specific applications can be divided into two ways: direct sintering into ceramics and use as sintering aid for other ceramics.
Magnesium oxide nano is a good ceramic raw material, because of its good heat resistance and its own strong resistance to erosion of alkaline metal solutions (and magnesium, nickel, uranium, aluminum, molybdenum, etc. do not interact), so it is decided that the application of magnesium oxide ceramics are often always related to high temperature environment.
In terms of preparation, magnesium oxide is difficult to sinter due to the tight density of ion packing in the lattice, the high symmetry of ion arrangement and the low number of lattice defects. Therefore, in order to promote sintering as well as to make the grains slightly larger, and to reduce the hydration tendency of the preparation, some additives can be added, such as TiO2, Al2O3, V2O3, etc. If the requirement of high purity of magnesium oxide ceramics, you can not use the method of adding additives to promote sintering and grain growth, but the method of activation sintering, that is, magnesium hydroxide calcined at the appropriate temperature, to get a lot of lattice defects of active magnesium oxide, used to manufacture sintered magnesium oxide ceramics.
Applications, magnesium oxide ceramics can be used as...
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