Nanometer yellow tungsten oxide may be used in the preparation of ceramic microsphere. And therefore it can be applied for the development of nano-particle reinforced aluminum matrix composites with light weight and high strength. The aluminum alloy matrix reinforced with the ceramic microspheres can improve the rigidity and wear resistance of aluminum alloy. And the material can have higher strength when working in a wider temperature range than the existing materials, so that it can be used in the aerospace field.
Metal matrix composites are castable. They can provide materials in the form of different articles, from extruded bars to machined parts. The aluminum metal powder and the alumina-ceramic nanoparticles are mixed together, and the obtained metal matrix composite powder is hot pressed and solidified into an ingot. The nanoparticles form a precipitate in the metal that provides higher strength and hardness. And then the ingot will be extruded into a bar or sheet which can then be forged, rolled or machined.
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