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What property does boron phosphide have?Due to different preparation methods, boron phosphide Has red, dark-red, and black transparent crystals, as well as soft, brown amorphous materials. The chemical properties are stable and boron-phosphide does not dissolve in concentrated hydrochloric or sulfuric acids, nor hydrofluoric or hydrofluoric acids.
Boron phosphide shares many properties with refractory substances. It has similar properties to diamond and boron-nitride, and is harder than silicon carbide. It can have an anti-oxidation property even when heated to a temperature between 800 and 10,000 degrees Celsius in the atmosphere. When boron is heated, the phosphorus in it disappears and a light grey residue forms. Boron-phosphide burns brightly in oxygen at 200degC and can be decomposed by most metals under red heat. It can be easily decomposed in red heat by most metals.
How is boron phosphide used?The boron film has better mechanical properties than germanium carbide. It also has a higher adhesion to diamond and is easier to deposit on large areas. In comparison with germanium carbide boron has better mechanical characteristics; in comparison with diamond boron thin layer is better adherent and more conducive to deposition over large areas; and boron has a lower internal stress compared to DLC. In order to reduce the internal stress, boron is a good material for anti-reflection films for infrared windows on high-speed aircraft.
Researchers are recognizing the importance of boron oxide film as a protective layer for components exposed to harsh environments. Boron-phosphide film is an ideal material for the corrosion resistance of the infrared glass of the submarine telescope. Once the telescope window is out at sea, it will always be immersed in water. The window should not only have a high transmittance in order to maintain the sensitivity of the photoelectric sensor, but it must also resist corrosion caused by chemicals found in seawater. The boron film is corrosion resistant and has a good chemical resistance. It can protect the window from seawater erosion, ensuring the original optical performance.
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