Stabilizers are rare earth oxides (Y2O3, CeO2, etc.) and alkaline earth metal oxides (CaO, MgO, etc.). Among them, yttrium oxide is the most important and commonly used stabilizer, and the zirconia stabilized by it is called yttrium oxide-stabilized zirconia, which, in addition to being applied to the back sheets and covers of electronic products, also has extremely important applications in the following fields.
Biomaterials
Compared with other traditional restorative materials, yttrium-stabilized zirconia has mechanical properties comparable to those of metal, can fully withstand the chewing force of posterior teeth, the material and color are close to the surrounding natural tooth tissues, there is no blocking effect on X-rays, so clinics do not have to worry about magnetic-field-related examinations and good tissue compatibility, so it has attracted much attention in the biomedical aspects of dentures and artificial joints.
Specialty mechanical parts
The brittleness of ceramic materials restricts the development of their applications, and nanoceramics are a very important way to solve the brittleness of ceramics. Experimentally, it has been proved that the tetragonal phase of ZrO2 can be utilized to change into a monoclinic phase to produce microcracks and residual stresses to toughen the ceramics. Therefore, ceramic materials represented by yttria-stabilized zirconia ceramics have a wide range of applications in bearings, bushings, valve balls, shells and other mechanical fields.
Solid Oxide Fuel Cell
Solid Oxide Fuel Cell (SOFC) belongs to the third generation of fuel cells, which is a kind of all-solid-state chemical power generation device that directly converts chemical energy stored in fuel and oxidizer into electric energy under medium and high temperatures in a highly efficient and It is widely regarded as a fuel cell that will be widely popularized and applied.
It is currently believed that there are 2 building blocks in the SOFC system, the anode and the electrolyte, which will both involve yttria-stabilized zirconia materials.
Thermal Barrier Coating (TBC)
Taking gas turbine blades as an example, the temperature of gas turbine blades used for general purposes ranges from 960 to 1,100°C; the gas turbine gas temperature in military aircraft is as high as 1,600°C; and the gas turbine gas temperature of commercial airplanes is as high as 1,500°C. However, the TBC used for producing turbine blades is not suitable for producing gas turbine blades. However, the maximum working temperature of nickel-based super heat-resistant alloy used to produce turbine blades is only 1100℃. With the increase of gas turbine gas temperature, compared with the development of new high-temperature heat-resistant alloys, it is much cheaper to work on the protection of gas turbine turbine blades. It is one of the most important applications of thermal barrier coatings to be applied on the surface of turbine blades of gas turbines to increase the operating temperature of gas turbines by playing the role of heat insulation, thus improving the efficiency of gas turbines and extending the service life of turbine blades.
After years of research, it is found that 6% ~ 8% Y2O3 partially stabilized ZrO2 (6% ~ 8% YSZ) has the longest thermal cycle life and has better resistance to the corrosion of Na2SO4 and V2O5, which makes it the best choice of ceramic layer material at present.
Ceramic Ferrule for Fiber Optic Connectors
Yttrium-stabilized zirconia can be used to prepare rare earth structural ceramic fiber optic inserts (precision needles) and sleeves for fiber optic connectors due to its excellent mechanical properties, chemical stability and high precision, which is the most widely used and in-demand fiber optic passive device in fiber optic networks, and is an important part of the construction of information network infrastructure.
In addition, yttria-stabilized zirconia has important applications in special cutting tools, refractory materials, and ternary lithium battery cathode material doping. Biomaterials are considered the most popular two major directions, especially in the ternary lithium battery cathode material applications.
yttrium-stabilized zirconia Supplier
Luoyang Trunnano Tech Co., Ltd (TRUNNANO) is a professional boride powder supplier with over 12 years experience in chemical products research and development.
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