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Application of magnesium oxide nanoparticles in ceramics

1, preparation of ceramic capacitor dielectric material, the grain size of the resulting ceramic can be controlled in the range of 1000nm, small dielectric loss, good material uniformity, suitable for the production of large capacity, with high insulation resistivity, ultra-thin dielectric layer (dielectric layer thickness less than 10μm) of multilayer ceramic capacitors. Its magnesium oxide addition amount is 0.5-5%.

2, nano ceramic powder, is prepared by nano magnesium oxide, nano silicon oxide, nano alumina, nano zinc oxide, etc., of which nano magnesium oxide 0.5-4%, the resulting nano ceramic powder has radiation far infrared, antibacterial, activation of water, water purification, dissolution of trace elements beneficial to human health, release of negative ions, improve the germination rate of plant seeds and a variety of health functions. It can be widely used in various ceramic products, environmental protection, textile, drinking water treatment, tobacco and wine equipment and containers and other industries.

3, and nano alumina, nano titanium dioxide, etc. together with the sintered nano-composite ceramic additives can replace the precious metal nickel to prepare heat-resistant steel. Among them, the nano-magnesium oxide additive amount 5 ~ 18%.

4, nanocrystalline composite ceramics, using nano titanium dioxide, nano magnesium oxide, nano rare earth oxides and some zirconium dioxide as additives, successfully increased the amorphous ZrO2 content to 10-30wt%, to obtain high zirconium Al2O3-SiO2-ZrO2 system microcrystalline, nanocrystalline composite ceramics, its crystalline phase content is greater than 90%, the main crystalline phase is mullite, tetragonal zirconia and square quartz. The tetragonal zirconia grains are diffusely distributed therein, and the size is less than ≤1 μm. the performance of the material prepared using the present invention is superior to the performance of the material of the same composition prepared by conventional methods, with 30% increase in microhardness, 6% increase in toughness and 40% increase in strength.

5, glass-ceramic coating, which is prepared by nano-magnesium oxide, nano-silica, boron oxide, nano-alumina, nano-cerium oxide together, can effectively improve the mechanical strength of the catalyst, including wear resistance, hardness, compressive strength and impact resistance; and improve the reaction activity center of the catalyst, thus improving the activity of the catalyst, saving active ingredients and reducing costs. It is mainly applied to processors for the purification of diesel and gasoline engine exhausts. The amount of magnesium oxide nanoparticles added is 5-18%.

6, the preparation of high toughness ceramic materials, with nano magnesium oxide and nano yttrium oxide or rare earth metal oxides as a composite stabilizer firing and heat treatment made of excellent mechanical properties, resistance to high temperature aging of partially stabilized zirconia ceramic. The ceramic material can be widely used as high temperature engineering parts and advanced refractory materials.

7, anti-reduction dielectric ceramic materials of auxiliary components, the addition of nano magnesium oxide 0.001-10%.

8, single-sided carbon dioxide gas shielded welding with ceramic pad material, the addition amount of nano-magnesium oxide 1-10%.

9, glass ceramics, with nano silicon oxide, nano titanium dioxide, nano alumina, nano magnesium oxide and other sintered glass ceramics can be processed into transparent with float glass method, especially suitable for thin film semiconductor with substrate, specifically can be applied to displays, solar cells, etc.. Among them, the addition of magnesium oxide nanometer 6-20%.

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