Properties and Applications of Yttrium Oxide Manufacturer

Yttrium oxide (Y2O3) is a white rare earth oxide that is insoluble in water and alkali and soluble in acid. It is a typical C-type rare earth sesquioxide and has a body-centered cubic structure.

(1) The molar mass is 225.82g/mol, and the density is 5.01g/cm3;

(2) Melting point 2410℃, boiling point 4300℃, good thermal stability;

(3) Good physical and chemical stability and good corrosion resistance;

(4) High thermal conductivity. The thermal conductivity can reach 27W/(m⋅K) at 300K, which is about twice the thermal conductivity of yttrium aluminum garnet (Y3Al5O12) crystal. High thermal conductivity makes it suitable as a laser working medium. Very beneficial;

(5) The optical transparency range is wide (0.29~8μm), and the theoretical transmittance in the visible light region can reach more than 80%;

(6) The phonon energy is low, and the strongest peak of the Raman spectrum is located at 377cm-1, which is beneficial to reducing the probability of non-radiative transition and improving the upconversion luminous efficiency;

(7) Below 2200°C, Y2O3 is in cubic phase and does not have birefringence. The refractive index is 1.89 at a wavelength of 1050nm. Transforms into hexagonal phase above 2200℃;

(8) The energy gap of Y2O3 is very wide, up to 5.5eV. The energy level of the doped trivalent rare earth luminescent ions is between the valence band and the conduction band of Y2O3 and above the Fermi level, thus forming a discrete luminescent center;

(9) As a matrix material, Y2O3 can accommodate high-concentration doping of trivalent rare earth ions and replace Y3+ ions without causing changes in its structure.

Yttrium oxide is often used as a functional additive material due to its high dielectric constant, good heat resistance, strong corrosion resistance, and a series of excellent physical properties. It is widely used in atomic energy, aerospace, fluorescence, electronics, high-tech ceramics, etc. field.

As a phosphor matrix material, it is used in fields such as display, lighting, and marking;

As a laser medium material, transparent ceramics with high optical properties are prepared, which can be used as a laser working medium to achieve room temperature laser output;

As an up-conversion luminescent matrix material, it is used in fields such as infrared detection and fluorescent labeling;

Made into transparent ceramics, it can be used in visible and infrared lenses, high-pressure gas discharge lamp tubes, ceramic scintillators, high-temperature furnace observation windows, etc.;

Can be used as reaction vessels, high-temperature resistant materials, refractory materials, etc.;

As raw materials or additives, it is also widely used in fields such as high-temperature superconducting materials, laser crystal materials, structural ceramics, catalytic materials, dielectric ceramics, and high-performance alloys.