Advanced Nano Material

  "Not necessarily, for example: metal oxides such as manganese heptaoxide and chromium trioxide are acidic oxides, and metal oxides such as aluminum oxide and zinc oxide are amphoteric oxides, none of which are basic oxides; carbon monoxide and Non-metal oxides such as nitrogen are non-salt-forming oxides, and they are not acidic oxides." Manganese oxide Mn2O3 overview Manganese trioxide  is an oxide with a chemical formula of Mn2O3 and a molecular weight of 157.88. Black cubic crystals. Relative density 4.50. Insoluble in water, acetic acid and ammonium chloride solution, soluble in other inorganic acids. It dissolves in cold hydrochloric acid to form a brown solution, becomes a red solution in hot dilute sulfuric acid or concentrated sulfuric acid, decomposes into MnO₂ and manganese nitrate in hot nitric acid, and decomposes into Mn3O4 when heated and releases O₂. It exists in two forms, α-Mn2O3 and γ-Mn2O3. α-type is obtained by decomposing nitrate, carbonate or chloride

  Zinc sulfide ZnS powder overview Zinc sulfide  is an inorganic compound with a chemical formula of ZnS and a molar mass of 97.47 g/mol. The chemical structure of zinc sulfide is very simple, consisting of zinc metal connected to a sulfur atom through a polar covalent bond. This is the main form of zinc found in nature, mainly in the form of the mineral sphalerite. Although this mineral is usually black due to various impurities, the pure substance is white and is widely used as a pigment. In its dense synthetic form, zinc sulfide can be transparent, and it is used as a window for visible optics and infrared optics. Zinc sulfide is yellowish white powder in liquid. It is insoluble in water and has a higher density than water. The main hazard is the hazard to the environment. Measures should be taken immediately to limit spread to the environment. There are two different crystal forms of solid zinc sulfide, α (wurtzite) and β (sphalerite), which have hexagonal and cubic structures, res

  Overview of Boron Carbide Boron carbide , also known as black diamond, is an inorganic substance with a chemical formula of B4C, usually a gray-black micropowder. It is one of the three hardest known materials (after diamond and cubic boron nitride) and is used in tank armor, body armor and many industrial applications. It has a Mohs hardness of about 9.5. Boron carbide can absorb a large number of neutrons without forming any radioisotopes, so it is an ideal neutron absorber in nuclear power plants, and neutron absorbers mainly control the rate of nuclear fission. Boron carbide is mainly made into controllable rods in nuclear reactors, but sometimes it is made into powder to increase the surface area. Because of its low density, high strength, high temperature stability and good chemical stability. It is used in wear-resistant materials, ceramic reinforced phases, especially in lightweight armor, reactor neutron absorbers, etc. In addition, compared with diamond and cubic boron nitr