Barium Fluoride particles are white crystalline particles composed of barium ions and fluoride ions with low water solubility, high transparency, X-ray and ultraviolet ray absorption, etc., which are widely used in optics, electronics, chemicals and other fields.<\/p>\n
Characteristics<\/p>\n
Chemical formula : BaF\u2082<\/p>\n
Molecular weight: 175.32 g\/mol<\/p>\n
CAS No.: 7787-32-8<\/p>\n
Appearance: Usually white cubic crystal or powder.<\/p>\n
Density: Relative density 4.893 g\/cm\u00b3<\/p>\n
Melting point: 1368 \u00b0C (2494 \u00b0F, 1641 K)<\/p>\n
Boiling point: 2260 \u00b0C (4100 \u00b0F, 2530 K)<\/p>\n
Refractive index: 1.471<\/p>\n
Solubility: Slightly soluble in water, soluble in hydrochloric acid, nitric acid, hydrofluoric acid and ammonium chloride solution. At 25\u2103, the solubility in 100g of water is about 0.161g.<\/p>\n
Hardness: Mohs hardness is 3<\/p>\n
Toxicity: Toxic, strongly irritating to eyes, skin, mucous membranes and upper respiratory tract.<\/p>\n
ELECTRICAL: It has a certain degree of electrical conductivity, but specific electrical parameters such as conductivity may vary depending on factors such as preparation method and purity.<\/p>\n
Optical: It is a transparent compound with a specific transmission range from UV to IR, e.g. 150-200 nm to 11 – 11.5 \u00b5m. It has a wide range of applications in the optical field, e.g. it can be used in the manufacture of optical glass, optical fibres, laser generators etc.<\/p>\n
Coefficient of thermal expansion: linear coefficient of thermal expansion of 18.4 \u00b5m\/m – \u00b0C (10.2 \u00b5 in\/in – \u00b0F).<\/p>\n
Heat of Melt: Heat of Melt 101.5 J\/g (43.67 BTU\/lb)<\/p>\n
Applications<\/p>\n
Optical applications:<\/p>\n
Optical glass manufacturing: barium fluoride is an important raw material for manufacturing optical glass, which can increase the refractive index of glass and improve optical properties, and is used to manufacture various optical lenses, lenses, prisms, etc. It is widely used in camera lenses, telescopes, microscopes and other optical instruments.<\/p>\n
Optical fibre: In the manufacture of optical fibre, barium fluoride can be used as dopant or coating material to improve the transmission efficiency and anti-interference ability of optical fibre, which is of great significance in the fields of high-speed communication and optical fibre sensing.<\/p>\n
Laser material: It is an excellent material for laser generator, and its crystal has excellent scintillation performance and fast time characteristics, which can be used in the manufacture of solid-state lasers, and plays a role in laser processing, laser medicine, laser ranging and other areas.<\/p>\n
Window material: barium fluoride window sheet is widely used in infrared spectroscopy and other instruments, which has a wide bandwidth transmittance, can be transmitted from the far ultraviolet to the long-wave infrared, and can resist a certain amount of high-energy radiation.<\/p>\n
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Electronics Industry:<\/p>\n
Semiconductor manufacturing: barium fluoride crystals are good buffer layer materials that can connect semiconductors with different lattice constants, and are used in the manufacturing and packaging of semiconductor devices, which helps to improve the performance and reliability of semiconductor devices.<\/p>\n
Electronic ceramics: It can be used in the manufacture of electronic ceramics, such as capacitor ceramics, piezoelectric ceramics, etc., to improve the dielectric and piezoelectric properties of electronic ceramics.<\/p>\n
Electric welding co-solvent: In the process of electronic welding, barium fluoride can be used as a co-solvent component to help reduce the welding temperature and improve the welding quality.<\/p>\n
<\/p>\n
Metallurgical industry:<\/p>\n
Solvent for desilication of ferromanganese in blast furnace: Barium fluoride does not contain oxygen atoms in its molecule, so it can be used as a solvent for desilication of ferromanganese in blast furnace, and it can achieve high rate of desilication and low manganese oxidative loss rate in desilication of ferromanganese in blast furnace.<\/p>\n
Metal heat treatment: In the process of metal heat treatment, barium fluoride can be used as an additive to improve the organisational structure and performance of metal, and increase the hardness, strength and toughness of metal.<\/p>\n
<\/p>\n
Chemical industry:<\/p>\n
Paint and enamel manufacture: It can be used in the manufacture of paints and enamels to improve the corrosion resistance, abrasion resistance and heat resistance of paints and enamels.<\/p>\n
Flux: In some high-temperature melting and chemical reaction processes, barium fluoride can be used as a flux to lower the reaction temperature and promote the reaction.<\/p>\n
<\/p>\n
Other applications:<\/p>\n
Wood preservative and insecticide: barium fluoride has certain anticorrosive and insecticidal effects, and can be used in wood preservative and insecticide treatment to extend the service life of wood.<\/p>\n
Corpse preservative: In some special occasions, such as medical research and forensic identification, barium fluoride can be used as a corpse preservative to prevent the corpse from decaying.<\/p>\n
Low-temperature refrigeration thermal imaging system: It is commonly used in low-temperature refrigeration thermal imaging system as one of the key materials, which helps to improve the performance and imaging quality of the system.<\/p>\n
Preparation of phosphor: Barium fluoride material can effectively promote the preparation of aluminium-type phosphor, which is used for the preparation of YAG:Ce phosphor in the solid-phase method.<\/p>\n","protected":false},"excerpt":{"rendered":"
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