Black titanium is a stainless steel material that uses special surface treatment processes such as electroplating or water plating to make the stainless steel surface appear black. This treatment method not only enhances the decorative effect of stainless steel, but also improves its corrosion resistance, wear resistance, and UV resistance. The materials of black titanium stainless steel plates usually include different types of stainless steel such as 201, 304, and 316, and the thickness ranges from 0.28mm to 5mm. In terms of physical properties, the density of black titanium stainless steel is about 7.92 g/cm³, the elastic modulus is 200 GPa, the tensile strength is 520 MPa, the elongation is 40%, and the hardness is 207HBW. In terms of chemical composition, it contains a certain proportion of elements such as carbon, silicon, manganese, phosphorus, sulfur, chromium, nickel, and molybdenum. The types of black titanium stainless steel include black titanium brushed, black titanium frosted, and black titanium mirror, etc. These types may use different surface treatment processes during processing, such as mirror polishing, brushed sandblasting, or etching. Among them, the black titanium mirror stainless steel plate is made by grinding and polishing the ordinary stainless steel plate, and then titanium plating it to form a corrosion-resistant black titanium layer on its surface. The production process of black titanium stainless steel mainly includes electroplating and water plating. The color of electroplating is gray, while the color of water plating is relatively black. If 304 or 316 stainless steel plates are used for water plating of black titanium, the color can be adjusted to black or blue according to customer requirements. The black titanium stainless steel plate is relatively simple in the processing process, the color is stable, and serious color difference problems rarely occur. It has strong decorative properties. Black, as a versatile color, can be applied to a variety of scenes to create a high-end and atmospheric decorative effect.
Is there black titanium?
Titanium suboxide
Titanium suboxide is a highly active and pure black inorganic new energy functional material. Its color is black. In terms of chemical structure, it is between titanium dioxide (TiO2) and metallic titanium. It has a variety of forms, including polycrystalline and crystalline forms, among which the most common forms are anatase and rutile. The structure of anatase-type titanium dioxide is tetragonal, and the structure of rutile-type titanium dioxide is hexagonal. Titanium dioxide is environmentally friendly and non-toxic, meets food-grade safety standards, does not cause damage to the skin, and meets the development needs of a low-carbon economy. Titanium dioxide has good electrical conductivity, especially the Ti4O7 phase, whose single crystal conductivity is as high as 1500S/cm³. In addition, titanium dioxide also has high thermal stability and good dispersibility and can be evenly dispersed in water and resin. The black characteristics of titanium dioxide make it widely used in photocatalysts, battery electrode materials, LED black matrix materials, and other fields. Due to its unique physical and chemical properties, titanium dioxide can be used as a cathode to replace graphite in the battery field to reduce the capacitance attenuation caused by charge and discharge cycles. At the same time, it also shows good performance in the chemical industry, electrometallurgy, electroplating, environmental protection industry, and water treatment.
Black titanium dioxide
Traditional titanium dioxide is a white pigment widely used in coatings, plastics, papermaking, and other industries. However, titanium dioxide can be made black by special chemical treatments, such as hydrogenation, chemical reduction, and anodization-annealing.
Compared with traditional white titanium dioxide, this black titanium dioxide exhibits significantly enhanced light absorption and electron transport capabilities, has improved optical absorption properties, and can absorb light from the ultraviolet to infrared regions of the solar spectrum, mainly due to its special core-shell structure, in which the outer shell is an oxygen-deficient amorphous layer and the inner core is the original crystalline phase. Titanium dioxide with this structure exhibits higher activity in photocatalytic performance, especially in the visible and near-infrared light regions, which is of great significance for improving the utilization efficiency of solar energy. This makes it have potential application value in the fields of photocatalysis, solar cells, solar thermal collection, etc. and provides a new research direction for the application potential of titanium dioxide in the energy field.
1. Photohydrogen production: Black TiO2 has been widely studied for photocatalytic water decomposition to produce hydrogen because of its ability to absorb visible light and even near-infrared light. For example, the Ti3+ ions and oxygen vacancies produced by hydrogenation can significantly enhance the absorption of visible light, charge carrier capture ability and charge separation ability, thereby improving the efficiency of photocatalytic hydrogen production. 2. Photoelectric hydrogen production: The black TiO2 nanotube arrays prepared by the electrochemical reduction method show enhanced photoelectrochemical water splitting performance, which can effectively improve the efficiency of photoelectric hydrogen production. 3. Photodegradation of organic matter: Black TiO2 has extremely high photodegradation efficiency for a variety of organic pollutants such as phenol, reactive black 5, rhodamine B, methylene blue, etc., and is used to remove environmental pollutants. 4. Photochemical sensors: Black TiO2 is also used in the development of photochemical sensors due to its excellent light absorption properties, which is used to detect organic pollutants in the environment. 5. Cancer photothermal therapy: Polyethylene glycol-coated hydrogenated black TiO2 has been studied for the diagnosis and treatment of cancer, showing good photothermal therapy effects. 6. Other energy and environmental applications: Black TiO2 has also been studied for other energy conversion and environmental remediation fields, such as photocatalytic CO2 reduction, antibacterial disinfection, etc.
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