Views: 0 Author: Site Editor Publish Time: 2026-04-28 Origin: Site
As a key medium and heavy rare earth oxide, yttrium oxide (chemical formula Y2O) occupies an irreplaceable strategic position in many high-tech fields such as high-end manufacturing, electronic information, aerospace, and biomedicine due to its unique physical and chemical properties. As the world's largest producer and supplier of yttrium oxide, China's industrial development directly affects the stable operation of the global high-end industrial chain.
First, the core physical and chemical properties of yttrium oxide
The properties of yttrium oxide cover two dimensions: physical and chemical properties, which together determine its multiple application value. The core parameters and characteristics are as follows:
(I) Basic physical properties
• Under normal temperature and pressure, yttrium oxide appears as a white and slightly yellow crystalline powder with a cubic crystal structure. Its basic physical parameters are excellent, with a molecular weight of 225.81 g/mol, a theoretical density of about 5.01 g/cm ³, a melting point of 2410-2430 ° C, and a boiling point of 4300 ° C, showing strong thermal stability. This hot topic stability enables it to maintain structural stability in extreme high temperature environments, providing a basic guarantee for high temperature application scenarios.
• Optical properties are one of the most outstanding properties of yttrium oxide. It has a wide range of optically transparent regions, with a light transmittance of more than 80% in the visible light region, especially in the 200-8000 nm band with extremely low optical losses, and a refractive index of 1.89 at 1050 nm. In addition, yttrium oxide has low phonon energy, which can effectively suppress radiant-free transitions and significantly improve luminous efficiency.
• In terms of thermal and mechanical properties, yttrium oxide performs well. At 300K, the thermal conductivity can reach 27 W/(m · K), which is conducive to heat conduction and heat dissipation; the coefficient of thermal expansion is 7.5 × 10/℃ (25-1000 ℃), and the phase transition stability is strong. Below 2200 ℃, it is a cubic phase without birefringence. It only converts to a hexagonal phase above 2200 ℃. Its Mohs hardness is 6-7, and it has certain mechanical strength, which can meet different molding processing needs.
(B) Key chemical characteristics
Yttrium oxide has strong chemical stability and excellent corrosion resistance. It is insoluble in water and alkali solutions, but it can slowly dissolve in strong inorganic acids such as hydrochloric acid, nitric acid, and sulfuric acid to generate corresponding yttrium salts. It should be noted that it is easy to absorb carbon dioxide and moisture in the air and deteriorate, so it needs to be stored in a closed manner to ensure stable performance. From the perspective of chemical activity, yttrium oxide can be used as a dopant to form stable composite oxides with various oxides, and can also coordinate with rare earth ions and transition metal ions to regulate the functional properties of materials. In addition, yttrium oxide has a certain oxygen storage capacity, which gives it a unique advantage in the field of catalysis.
(III) Differences in specification classification correlation traits
According to the different purity and morphology, there are subtle differences in the properties of yttrium oxide, which is suitable for different application scenarios. Supply mainstream purity of 99.9%, 99.99%, 99.999%, the higher the purity, the lower the impurity content, the better the optical purity and electrical stability. Among them, the refractive index and light transmittance of ultra-pure yttrium oxide are better, suitable for high-end scenarios such as semiconductors and laser crystals. Nano-scale powders can also be customized according to morphology. Nano-scale yttrium oxide has a large specific surface area, high surface activity, and significantly improved catalytic activity and reaction efficiency.
Main application fields of yttrium oxide
The application field of yttrium oxide is highly dependent on its core properties, such as hot topic stability, high temperature structural materials, excellent optical properties to support fluorescent and laser materials, and good doping compatibility to promote the development of electronic functional materials. At present, its applications have covered electronic information, aerospace, biomedicine, new energy and other strategic fields, of which electronic ceramics and LED phosphors account for more than 65%.
(1) Electronic information and display field
• In display technology, yttrium oxide has become the core raw material of fluorescent materials due to its excellent optical properties and doping characteristics. It is widely used in color TV picture tubes, fluorescent lamps, LED and Mini/Micro LED backlight display devices, effectively improving the color reproduction and brightness of the display screen. Its wide optical transparency area and low optical loss characteristics can also be used to manufacture high-end optical glass and infrared window materials. It is used in optical fiber communication, laser optical components and other fields to improve light transmission efficiency and stability.
• In the field of electronic ceramics, yttrium oxide is an important dopant material for multilayer ceramic capacitors (MLCCs) and film capacitors. It can regulate the dielectric properties of ceramics, improve the dielectric constant and breakdown field strength, and meet the needs of miniaturization and high frequency of electronic components. At the same time, yttrium oxide, as a high-k dielectric material, can be used as the gate dielectric layer of advanced integrated circuits to help improve the performance of semiconductor devices.
(Ii) High-temperature structures and aerospace materials
• The hot topic stability and doping stability of yttrium oxide make it a core component of high temperature structural materials. In zirconia ceramics, yttrium oxide acts as the main stabilizer, which can inhibit the phase transition and accompanying volume expansion of zirconia from tetragonal phase to monoclinic phase, and achieve phase transition toughening, so that the material has both high strength and high toughness. It is widely used in aero-engine components, dental repair materials, high temperature tools and other scenarios. Adding yttrium oxide to silicon nitride ceramics can significantly enhance the thermal shock resistance and high temperature strength of the material, which is used in the manufacture of high temperature engine ceramic parts and cutting tools.
• In the aerospace welding process, yttrium oxide-doped yttrium tungsten electrodes can generate large penetration depth and slender arc beams to meet the welding needs of special materials; yttrium oxide added to yttrium magnesium alloys can purify the melt and improve the microstructure, so that the strength and high temperature resistance of the alloy are improved, and the weight is reduced, which is used in the manufacture of aircraft engine turbine blade bases and aerospace load-bearing structural parts. In addition, yttrium oxide-stabilized zirconia is an ideal component of thermal barrier coatings, which are used in high temperature components of aero engines to improve their high temperature resistance and service life.
(III) Laser and superconducting materials
• The hot topic conductivity and low phonon energy characteristics of yttrium oxide make it a high-quality laser crystal matrix material. Yttrium oxide-based crystals (such as yttrium aluminum garnet YAG) doped with rare earth ions such as Nd ³, Yb ³, etc., can prepare high-power solid-state lasers, which are used in industrial cutting, medical surgery and military directed energy weapons. Its hot topic conductivity can effectively solve the heat dissipation problem of laser medium and improve the output power and stability of laser.
• In the field of superconducting materials, yttrium oxide, as a buffer layer material, can epitaxially grow superconducting films on metal substrates, enhancing the critical current density of superconducting materials...
(Iv) biomedical and nuclear energy
• It is an ideal radionuclide for clinical treatment. The microspheres loaded with yttrium 90 can be precisely delivered to the hepatic artery through vascular intervention to precisely treat tumor lesions and achieve tumor "implosion"; in addition, yttrium 90 can also be used to cut spinal cord pain nerves, treat rheumatoid arthritis synoviectomy and other scenarios. At the same time, the biocompatibility and optical properties of yttrium oxide make it potentially useful in biological imaging, anti-counterfeiting markers and other fields.
• In the field of nuclear energy, yttrium oxide can be used as an actinide curing substrate for vitrification of high-level radioactive waste. Its high chemical stability can effectively fix radionuclides and reduce the risk of nuclear leakage. In addition, the exploratory application of yttrium oxide stabilized zirconia in nuclear fuel cladding and high temperature sensors is expected to form a new industrial growth point.
(5) Catalysis and new energy fields
• The oxygen storage capacity of yttrium oxide makes it the core component of three-way catalytic converters for automobile exhaust gas purification, which can promote the conversion of carbon monoxide (CO), hydrocarbons (HC) and nitrogen oxides (NOx), and improve the efficiency of exhaust gas purification. At the same time, its high specific surface area and surface activity characteristics make it suitable for chemical reactions such as the synthesis of ethane from carbon monoxide and hydrogen as a catalyst carrier to improve the selectivity and conversion rate of the reaction.
• In the field of new energy, yttrium oxide-stabilized zirconia ceramics are the key electrolyte materials for solid oxide fuel cells (SOFCs), ensuring the efficient and stable operation of fuel cells. In addition, yttrium oxide is also used in up-conversion luminescent materials for solar cells, which can realize the conversion of near-infrared light to visible light and improve solar energy utilization efficiency.
III. Cooperative security system
(1) Stable quality
• Relying on the rare earth resource advantages of Baotou City, Inner Mongolia, China, to escort your R & D and production. As an important birthplace and core agglomeration area of the global rare earth industry, Baotou City is endowed with unique rare earth resources. Its rare earth reserves account for nearly 90% of the country's proven reserves, which can ensure the purity of resources and the stability of supply from the source.
• The entire production process is carried out in a clean environment, and the whole process is monitored by laser particle size analyzer, BET specific surface area analyzer, XRD, ICP-MS and other equipment to ensure the uniformity and stability of product batches.
(2) Professional and customized technical services
• The technical team can provide personalized solutions based on customer needs (e.g. specific particle size, crystal structure, application scenarios), provide application testing guidance, data reporting support, and assist customers in quickly verifying product value.
• Build a 24-hour quick response mechanism to resolve customer demands with efficient service. Put service timeliness and customer experience first to ensure that every feedback can be timely and professional attention and processing. After you initiate an inquiry through any channel such as online message or email, a dedicated account manager will connect with you within 24 hours.
IV. Contact information
• Company Name: Inner Mongolia Lanthanum and Cerium Dilute Materials Technology Co., Ltd.
• Company address: Factory B1, Park, Alatan Khan Street, High-tech Industrial Base, Rare Earth High-tech Zone, Baotou City, Inner Mongolia Autonomous Region
• Contact number: +86-13734725059 / +86-15548127418
• E-mail: lacenrare@lacenrare.com
• Cooperation consultation: If you need sample testing, technical exchange or bulk procurement, you can contact us through the above methods, and we will respond within 24 hours to provide one-to-one exclusive services.
