What property does boron phosphide have?
Due to different preparation methods,
Has red transparent or dark red transparent crystals, black crystals, soft brown amorphous materials, and brown substances. The chemical properties are stable and it doesn’t dissolve in concentrated hydrochloric or nitric acids, nor does it dissolve in hydrofluoric or sulfuric 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 is ignited in a cool place by chlorine and in a slightly warm state by bromine. It can decompose by most metals at red heat and burns brightly with oxygen at 200degC.
How is boron phosphide used?
The boron film has a better mechanical property 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 superior mechanical properties. When compared to diamond, boron has a better adhesion. In order to reduce the internal stress, boron is a good material for anti-reflection films for high-speed infrared window.
Researchers are increasingly appreciating the protective properties of boronphosphide on other components exposed to harsh environments. Boron-phosphide film is a corrosion-resistant material that’s ideal for the infrared windows of submarine telescopes. The submarine telescope’s window is immersed into the seawater environment once it goes to sea. 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 good chemical resistance. It can protect the window from seawater erosion, ensuring the original optical performance.
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