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Where is magnesium fluoride mainly used
info：www.hongjiafu.net | Release time：2026-06-22
Magnesium fluoride is divided into two categories: optical high-purity single crystal/coated particles and industrial powder grade. Its core advantages include wideband transparency, low refractive index, high temperature resistance, and chemical stability. Metallurgy and ceramics are the basic industrial consumption markets.
1、 Optical and optoelectronic field (core application, high-purity magnesium fluoride)
1. Optical lens anti reflective coating (most popular)
The visible light refractive index is only 1.38, making it a globally used single-layer anti reflection film material. It is vacuum deposited on the surface of the lens
Civilian: camera lenses, eyeglass lenses, microscopes, telescopes, car cameras; Significantly reduce reflection, improve transparency, and eliminate glare
Industrial/Military: Laser lenses, infrared temperature measurement windows, spectrometers, optical filters; Using zinc sulfide as a multi-layer optical film system
2. Magnesium fluoride single crystal optical components
Single crystal can pass through vacuum ultraviolet at 120nm to mid infrared at 7 μ m, with a transmission range far exceeding that of ordinary optical glass
UV equipment: Excimer laser window, spectrometer prism, UV path of lithography machine, optical window for aerospace exploration;
Infrared system: Infrared thermal imager, thermometer, night vision device window, 3-5 μ m infrared band dedicated substrate;
Polarization devices: natural birefringent crystals, used to produce phase delay plates and ultraviolet polarizers;
Fiber optic communication: special ultraviolet/infrared fiber doped raw materials
3. Laser crystal matrix
Doping rare earth ions such as erbium and neodymium to create mid infrared solid-state lasers for medical lasers and environmental gas detection.
2、 Nonferrous metallurgy industry (main consumption scenario of industrial powder)
1. Electrolytic aluminum additive
Adding cryolite electrolyte to reduce melting temperature, decrease melt viscosity, stabilize molecular ratio, improve current efficiency, and reduce power consumption is a standard additive for electrolytic aluminum.
2. Magnesium metal smelting flux
Reduce the melting point of magnesium ore, separate impurities, improve the fluidity of magnesium liquid, and reduce high-temperature energy consumption.
3. Melting of aluminum/magnesium alloys, aluminum soldering flux
Remove the oxide film on the metal surface to prevent oxidation of molten aluminum and reduce porosity in castings; Aluminum welding wire, aluminum alloy welding matching flux raw materials.
4. Special steel smelting slag removal additive.
3、 Ceramic and special glass industry
1. Ceramic body/glaze flux
Reduce the sintering temperature of ceramics, promote the densification of the green body, improve hardness and heat shock resistance; Improving glaze gloss and whiteness, commonly used in industrial refractory ceramics, electronic ceramics, tool ceramics, and crucible ceramics.
2. Optical glass and low dispersion glass raw materials
After addition, the UV transmittance of the glass is improved, dispersion is reduced, and optical raw glass is manufactured.
4、 Electronics and Semiconductor Industry
Cathode ray tube, fluorescent screen fluorescent coating additives;
High temperature insulation filling material for electronic components, temperature resistant, insulating, and non-conductive;
LTCC raw ceramics and special substrate materials enhance ceramic insulation and density;
A small amount is used as isolation filler for semiconductor chip packaging.
5、 Other niche professional applications
1. Nuclear industry
Magnesium has a low neutron absorption cross section, and magnesium fluoride powder is used as an auxiliary material for neutron slowing down and shielding in reactors.
2. Chemical analysis: UV spectroscopy standard reagent.
3. Energy storage: Fluorine salt phase change energy storage materials, raw materials for solar energy storage systems.
4. Anti corrosion coating: Metal anti-corrosion coating auxiliary filler.
1、 Optical and optoelectronic field (core application, high-purity magnesium fluoride)
1. Optical lens anti reflective coating (most popular)
The visible light refractive index is only 1.38, making it a globally used single-layer anti reflection film material. It is vacuum deposited on the surface of the lens
Civilian: camera lenses, eyeglass lenses, microscopes, telescopes, car cameras; Significantly reduce reflection, improve transparency, and eliminate glare
Industrial/Military: Laser lenses, infrared temperature measurement windows, spectrometers, optical filters; Using zinc sulfide as a multi-layer optical film system
2. Magnesium fluoride single crystal optical components
Single crystal can pass through vacuum ultraviolet at 120nm to mid infrared at 7 μ m, with a transmission range far exceeding that of ordinary optical glass
UV equipment: Excimer laser window, spectrometer prism, UV path of lithography machine, optical window for aerospace exploration;
Infrared system: Infrared thermal imager, thermometer, night vision device window, 3-5 μ m infrared band dedicated substrate;
Polarization devices: natural birefringent crystals, used to produce phase delay plates and ultraviolet polarizers;
Fiber optic communication: special ultraviolet/infrared fiber doped raw materials
3. Laser crystal matrix
Doping rare earth ions such as erbium and neodymium to create mid infrared solid-state lasers for medical lasers and environmental gas detection.
2、 Nonferrous metallurgy industry (main consumption scenario of industrial powder)
1. Electrolytic aluminum additive
Adding cryolite electrolyte to reduce melting temperature, decrease melt viscosity, stabilize molecular ratio, improve current efficiency, and reduce power consumption is a standard additive for electrolytic aluminum.
2. Magnesium metal smelting flux
Reduce the melting point of magnesium ore, separate impurities, improve the fluidity of magnesium liquid, and reduce high-temperature energy consumption.
3. Melting of aluminum/magnesium alloys, aluminum soldering flux
Remove the oxide film on the metal surface to prevent oxidation of molten aluminum and reduce porosity in castings; Aluminum welding wire, aluminum alloy welding matching flux raw materials.
4. Special steel smelting slag removal additive.
3、 Ceramic and special glass industry
1. Ceramic body/glaze flux
Reduce the sintering temperature of ceramics, promote the densification of the green body, improve hardness and heat shock resistance; Improving glaze gloss and whiteness, commonly used in industrial refractory ceramics, electronic ceramics, tool ceramics, and crucible ceramics.
2. Optical glass and low dispersion glass raw materials
After addition, the UV transmittance of the glass is improved, dispersion is reduced, and optical raw glass is manufactured.
4、 Electronics and Semiconductor Industry
Cathode ray tube, fluorescent screen fluorescent coating additives;
High temperature insulation filling material for electronic components, temperature resistant, insulating, and non-conductive;
LTCC raw ceramics and special substrate materials enhance ceramic insulation and density;
A small amount is used as isolation filler for semiconductor chip packaging.
5、 Other niche professional applications
1. Nuclear industry
Magnesium has a low neutron absorption cross section, and magnesium fluoride powder is used as an auxiliary material for neutron slowing down and shielding in reactors.
2. Chemical analysis: UV spectroscopy standard reagent.
3. Energy storage: Fluorine salt phase change energy storage materials, raw materials for solar energy storage systems.
4. Anti corrosion coating: Metal anti-corrosion coating auxiliary filler.
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