It is reported that the high-strength boron fibers

Phosphide Boron, phosphide Boron is alsoa super-hard, anti-wear, heat-resistant, corrosion-resistant of new inorganicmaterials. Hardness (Mohs) 2.For spacecraft because of its high wear resistance, mechanical seals cleversubmarines.Different crystal structure, it has three allotrope: hexagonalboron nitride, close-packed hexagonal boron nitride, cubic boron nitride. Boron nitride fiber modulus and highfunctional fibers, high-temperature structural materials can be used asaerospace. The non-metallic borides apply in the field of aerospace defense areboron carbide, boron nitride, and phosphide boron and its composite. Boron carbide, the hardness of boroncarbide is only second to diamond and cubic boron nitride.The metal boride is formed of boron andtitanium, zirconium, hafnium, vanadium, niobium, tantalum, chromium,molybdenum, tungsten, manganese, lanthanum, iron and so on, generally referredto as the metal-type boride.

Because of its highstrength, high hardness, low density, good wear resistance and chemicalproperties of stable and neutron absorption properties, it have a wide range ofapplications in the aerospace, military protection, nuclear power plants,machinery and chemical industry. Its neutron absorption feature can be used for nuclear Flock printing Machine Manufacturers shieldingmaterials and nuclear reactor core block. The E modulus is almost equal. An epoxyresin or a polyamide resin as a boron fiber composite material of the base bodyand metallic aluminum, titanium, cobalt, boron-containing fibers of the matrixmaterial also has good performance.3.Hexagonal boron nitride has the same crystal structure and graphite, commonlyknown as white graphite. Boron nitride, boron nitride isinorganic polymers. Its light andhard coated can paint on the aircraft, submarines, or on the vehicle brakes tomake it more robust.0; 3000 ~~  sublimation; 3300 ~ 3400 melting.

And the weightis only 1/40 of the steel. Because of its hard cast military can protectboard for warships, tanks, armored vehicles, bulletproof layer. Also be used as a lightweight body armor, bulletproofvests, or coated on the jewelry and watches to prevent them from being worn. Their common features of having a metallic lusterand can be electrically and thermally conductive, high melting point, hardness,but brittle.mhcmp. Hardness thanSiC, the structure has a large energy gap, in the air of 800 to 1000 ° C cannot oxidize. Can be used for high-temperature semiconductors, synthetic gemmaterials; can also be used for optical instruments, precision instruments, beapplied in the field of defense high-tech. Through microwave and infrared light,radiation-resistant, has a strong neutron absorption capacity, and thereforecan be used as a high-temperature electrical insulation materials in the fieldof aerospace defense, anti-neutron shielding material, the radar the transferwindow, the radar antenna medium and rocket engine group and other items. The metal borides applied to the field of aerospace defense arelanthanum boride, titanium boride, zirconium boride, chromium boride, calciumboride, NdFeB and so on. Preparation method: phosphine method, boron trichloride, iodide,boron, the metal phosphide method and the metal flux method.Elemental boron fiber and compositematerials:

It is reported that the high-strength boron fibers produced by boronfiber manufacturers, high melting point, light weight, good thermal stability.com. Because of itsdifferent system of law, can present as dark red crystals, brown or gel form. As the metal powder supplier predict, the era ofboron fiber instead of carbon fiber and titanium alloy is coming.Phosphide Boron has chemical stability and strong resistance to oxidation andcorrosion resistance, insoluble in acid and organic solvents. For rocket solid fuel, nuclear reactor control rods, explosives the catalyst,automotive airbag triggered agent, boron-containing superconductors,high-quality special steel and other defense industry. The high temperature wear resistance of HBN is excellent, a graphitemore resistant to heat than the solid, corrosion resistance, thermal stabilityis better than diamond, and good dielectric insulating properties and highthermal conductivity.2.Its strength is 3 times of steel.Boron in industrial applications.At present, china use low temperature rapid reaction, self-propagating high temperature reduction, combustion synthesis technology to prepare ultrafine high purity boron powder.

Megosztás a facebookon