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METHOD OF PRODUCING METALLIC NANOPARTICLES AND COMPOSITE OF NANOSTRUCTURED METAL AND METAL OXIDES USING THERMIT
METHOD OF PRODUCING METALLIC NANOPARTICLES AND COMPOSITE OF NANOSTRUCTURED METAL AND METAL OXIDES USING THERMIT
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机译：热敏法制备金属纳米粒子和纳米结构金属及金属氧化物复合材料的方法
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摘要
The present invention relates to a method to obtain a composite of nanostructured metal and metal oxide having high strength while saving the energy in the steps of: producing metallic nanoparticles; producing metallic nanoparticles oxides by oxidating the metallic nanoparticles; oxidating aluminum to a certain extent by dissipating the oxides and nano-aluminum together with alcohol; and reducing metal, which can produce a product by pouring the composite of melted metal and alumina into a mold of wanted shape using the energy generated at this time. Most of all, the method of saving the energy of an electrical furnace for heating the electrical furnace is to use oxidation heat of nano-aluminum. According to the present invention, a composite of oxided nano-alumina and reduced metal can be produced by using the oxidation heat obtained through an oxidation-reduction reaction of metal and nano-aluminum. The metallic composite made in this method has advantages that: 1) the composite has high strength since the composite is a metallic composite having a nanostructure 2) the composite naturally has high strength since hardness of nano-alumina of metallic composite is 9. Though similar to Thermit used in conventional welding, in the present invention the oxidation-reduction reaction occurs at a low temperature using nano-aluminum material having small buoyancy, therefore oxidated alumina is mixed with metal through the Thermit reaction producing nanostructured metal, which is different from conventional Thermit. Additionally, conventional Thermit is only applied to welding, however, it is distinguishable that Thermit is used in the present invention for substituting various molds and powder metallurgies.;COPYRIGHT KIPO 2015
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