20 results about "Erbium(III) oxide" patented technology

An improved ceramic material for heat insulation with selection of specific stabilizers and adapted proportions, includes zirconium oxide with 0.2 wt. % to 8.0 wt. % of the base stabilizers: yttrium oxide (Y2O3), hafnium oxide (HfO2), cerium oxide (CeO2), calcium oxide (CaO), and / or magnesium oxide (MgO), wherein at least yttrium oxide (Y2O3) is used, and optionally at least one of the additional stabilizers: 0.2 wt. % to 20 wt. % of erbium oxide (Er2O3) and / or ytterbium oxide (Yb2O3).

The invention discloses a transparent heat-insulating coating based on up-conversion luminescent nanoparticles as well as a preparation method and application thereof, and belongs to the technical field of inorganic polymer materials. The coating comprises the following raw materials in parts by weight: 100-150 parts of a substrate coating, 5-10 parts of a dispersing aid and 0.5-3 parts of up-conversion luminescent nanoparticles. Traditional inorganic nanoparticles are changed, zinc oxide (ZnO), tin oxide (SnO), gallium oxide (Ga2O3), ytterbium oxide (Yb3O4) and erbium oxide (Er2O3) are used for forming functional components, and the functional components are matched with one another, so that the light-transmitting and heat-insulating coating with low nanoparticle addition amount is constructed. By adding a small amount of up-conversion nanoparticles into the coating, the application range of the up-conversion material is expanded, the blank of application of the material in research in the field of building coatings is filled, the performance of a traditional transparent heat-insulating coating is improved through the up-conversion luminescent material, and the light-transmitting heat-insulating performance of a paint film is greatly improved.

The invention discloses a bismuth oxide-based fuel cell electrolyte material and a preparation method thereof, and relates to the technical field of cell electrolyte materials. The material is composed of a trication-doped delta-Bi2O3 core and a zirconium oxide coating layer, the trication-doped delta-Bi2O3 core is co-doped with erbium, tungsten and aluminum ions, and the material comprises the following components in parts by mass: 75-80 parts of bismuth oxide (Bi2O3); 14 to 19 parts of erbium oxide (Er2O3); 1 to 3 parts of tungsten oxide (WO3); 1 to 3 parts of aluminum oxide (Al2O3); the zirconium oxide coating layer is formed by a coprecipitation method, and the thickness of the zirconium oxide coating layer is 5-20nm, so that the technical problems that the working temperature range of delta-Bi2O3 is difficult to broaden, and the low-temperature phase change and reduction under low oxygen partial pressure are difficult to inhibit are solved.

The invention belongs to the technical field of hydrogen energy resources, and particularly relates to an oxide composite coating as well as a preparation method and application thereof. The oxide composite coating provided by the invention comprises a chromium layer, a chromium / chromium oxide composite layer, a chromium oxide layer, a chromium oxide / aluminum oxide composite layer, an aluminum oxide layer, an aluminum oxide / erbium oxide composite layer and an erbium oxide layer which are sequentially stacked, the mass percentage content of chromium in the chromium / chromium oxide composite layer is reduced in a gradient manner; the mass percentage content of chromium oxide in the chromium oxide / aluminum oxide composite layer is reduced in a gradient manner; the mass percentage content of aluminum oxide in the aluminum oxide / erbium oxide composite layer is reduced in a gradient manner. A composite transition layer with gradient composition change is introduced into the interface of the substrate / oxide layer and the interface of the oxide layer / oxide layer, so that the obvious interface is eliminated, and the interlayer bonding force is greatly improved. Chromium oxide, aluminum oxide and erbium oxide are all excellent hydrogen barrier materials, the multilayer structure and the interface thereof can effectively prolong the permeation path of hydrogen, and the hydrogen permeation barrier coefficient is improved.

The present invention discloses a bimetallic oxygen reduction electrocatalyst and a preparation method thereof. The catalyst substrate material is nitrogen-doped carbon nanofibers, and cobalt and erbium oxide are loaded on the substrate, wherein cobalt and erbium oxide are assembled to form a Mott-Schottky type heterojunction; the preparation method is as follows: (1) Dissolve polyvinylpyrrolidone in an organic solvent to form a polymer solution; (2) Dissolve cobalt salt and erbium salt in the polymer solution prepared in step (1); (3) Spin the solution prepared in step (2) to obtain a carbon nanofiber precursor; (4) Calcinate the product of step (3) at a high temperature under the protection of an inert gas to obtain the bimetallic oxygen reduction electrocatalyst; the catalyst forms a Mott-Schottky erbium oxide-cobalt heterojunction through erbium oxide and cobalt, thereby improving the oxygen reduction catalytic activity of the catalyst.

A rare-earth-doped aluminum-based composite material for shielding spent nuclear fuel comprises, by weight percentage: gadolinium oxide 1 wt.%–10 wt.%, europium oxide 1 wt.%–10 wt.%, samarium oxide 1 wt.%–10 wt.%, dysprosium oxide 1 wt.%–10 wt.%, erbium oxide 1 wt.%–10 wt.%, with the remainder being 6063 aluminum alloy powder. This invention exhibits excellent neutron absorption capacity. The aluminum-based material maintains both low weight and high strength and ductility. Furthermore, the addition of rare-earth elements such as Gd, Eu, and Sm, which have high thermal neutron absorption cross-sections, significantly enhances the material's neutron absorption capacity. The introduction of rare-earth elements such as Gd, which react with neutrons in an (n,γ) reaction, effectively prevents the formation of numerous helium bubbles in the matrix, thus improving the material's practical service life.

The invention provides an erbium-ytterbium co-doped optical fiber with a highly phosphorus-doped fiber core as well as a preparation method and application of the erbium-ytterbium co-doped optical fiber. The erbium-ytterbium co-doped optical fiber is sequentially provided with the fiber core, an inner cladding and a coating from inside to outside, the molar content of phosphorus pentoxide in the fiber core is 10 mol%-15 mol%, the molar content of erbium oxide in the fiber core is 0.02 mol%-0.12 mol%, the molar content of ytterbium oxide in the fiber core is 1 mol%-1.5 mol%, and the balance is silicon dioxide; the difference value of the molar content of phosphorus pentoxide in any two parts of the fiber core is smaller than or equal to 0.8 mol%. According to the erbium-ytterbium co-doped optical fiber, the content of phosphorus pentoxide in all positions in the fiber core is uniformly distributed while the fiber core is doped with high phosphorus content, and the gain performance and the gain consistency of the erbium-ytterbium co-doped optical fiber are improved.

Described are aluminate compositions that contain erbium aluminum oxide as a perovskite crystalline structure; methods of preparing aluminate compositions that contain erbium aluminum perovskite; articles that contain erbium aluminum perovskite, and methods of preparing and methods of using articles that contain erbium aluminum perovskite.

A ceramic material which contains yttrium oxide as stabilizers and at least one of the materials erbium oxide or ytterbium oxide provides a phase having sintering stability for a ceramic material for ceramic layers and a ceramic layer system which maintain the mechanical and thermal properties for a long time even when used at high temperatures.

The invention belongs to the technical field of dental repair materials, and particularly relates to a high-performance ceramic block and a preparation method thereof. The high-performance ceramic block is prepared from the following raw materials in parts by mass: 61 to 71 parts of silicon dioxide, 11 to 17 parts of lithium oxide, 2.5 to 5.5 parts of potassium oxide, 2 to 4.5 parts of aluminum oxide, 2.5 to 5.5 parts of phosphorus pentoxide, 1 to 3.5 parts of boric oxide, 0.3 to 4 parts of zinc oxide, 0.1 to 2.5 parts of zirconium dioxide, 0.1 to 1 part of vanadium oxide, 0.1 to 1 part of cerium oxide, 0.1 to 2 parts of erbium oxide, 0.1 to 1 part of manganese dioxide and 0.1 to 2 parts of strontium carbonate. And 0.1-1 part of lanthanum oxide. By designing the raw material composition and proportioning and combining the preparation method, the obtained ceramic block has the characteristics of wide operation temperature range and high strength. The product provided by the invention has excellent biocompatibility, transparency and glossiness, can better simulate the appearance of natural teeth, and is suitable for repair scenes with relatively high requirements on beauty.

The invention discloses a molybdate pigment as well as a preparation method and application thereof. The molybdate pigment comprises erbium-doped neodymium molybdate, and the preparation method comprises the following steps: mixing neodymium oxide, erbium oxide and molybdenum trioxide, carrying out wet ball milling, drying, calcining and grinding. The molybdate pigment has the advantages of high near-infrared reflectivity, remarkable light environment induced discoloration effect, safety, environment friendliness and the like, can be applied to the fields of building decoration, energy-saving materials and the like, and is simple in preparation method, high in production efficiency, low in production cost and suitable for large-scale industrial production and application.

The present application relates to the field of environmental barrier coatings or integrated thermal environmental barrier coatings, and particularly relates to a yttrium-holmium-erbium-ytterbium non-equiatomic high-entropy rare earth monosilicate ceramic material and a preparation method thereof. x Ho (1‑x) / 3 Er (1‑x) / 3Yb (1‑x) / 3 )2SiO5, wherein the atomic molar amount x of Y ranges from 0.05 to 0.95. The yttria powder, holmia powder, erbium oxide powder, ytterbia powder and silica powder are used as raw materials, wet mixing is performed, pressureless sintering is performed in an air atmosphere, and then sintering is performed in a hot-pressing furnace with a protective atmosphere, so that the high-entropy rare earth monosilicate ceramic material with high purity and excellent high-temperature thermal physical properties is obtained.

The invention discloses a catalyst for preparing ketene through selective hydrogenation of diketene as well as a preparation method and application of the catalyst. The catalyst comprises an active component, a carrier and a modification aid, the active components are primary metal ruthenium and secondary metal palladium; the carrier is one of erbium oxide and samarium oxide; the modification auxiliary agent is one of mercaptoamines. When the catalyst is applied to preparation of ketene through selective hydrogenation of diketene, the conversion rate and selectivity are high, the reaction conditions are mild, the hydrogen pressure is lower, and the catalyst is suitable for industrial production.

The invention relates to the technical field of erbium oxide film preparation, and discloses a method for preparing an erbium / erbium oxide composite film on a steel plate, and the preparation method comprises the following steps: fixing a steel substrate on a base, and putting the steel substrate into a cavity of a magnetron sputtering system; the cavity is vacuumized, the steel substrate is heated to a first preset temperature, then argon is introduced, a metal Er target is sputtered on the steel substrate, and therefore a metal Er layer is formed on the surface of the steel substrate; after the metal Er layer is cooled, the steel substrate with the metal Er layer formed on the surface is heated to a second preset temperature, mixed gas with the flow ratio of oxygen to argon being 1: 20-40 is introduced, a metal Er target continues to be sputtered on the surface of the metal Er layer to form an Er2O3 film, then annealing treatment is conducted in the nitrogen atmosphere, and therefore the erbium / erbium oxide composite film is prepared on the steel substrate. The thin film is prepared through magnetron sputtering, high binding force between the Er2O3 thin film and the steel substrate is achieved, and the uniformity, compactness and stability of the thin film are improved.

The application discloses a hydrogen barrier coating on a surface of a metal hydride material and a preparation method and application thereof, and belongs to the technical field of nuclear reactor control materials. The preparation method comprises the following steps: performing pretreatment on the surface of a metal hydride base; and forming the hydrogen barrier coating of at least one of an erbium oxide coating, an aluminum oxide coating and a mixed layer of the erbium oxide and the aluminum oxide on the metal hydride base by adopting a sol-gel method and / or a thermal spraying method. The hydrogen barrier coating on the surface of the metal hydride material provided by the application is different from the traditional mode of mixing the erbium oxide into a nuclear fuel pellet and placing the hydrogen barrier coating on the surface of a cladding, the application places the erbium in the form of the erbium oxide hydrogen barrier coating on the surface of the metal hydride, simultaneously adds or adjusts the content of the aluminum oxide to meet the demand of the hydrogen barrier performance, forms the metal hydride moderating material containing the hydrogen barrier coating, and can simultaneously realize the purposes of the continuous high-temperature moderating capability of the metal hydride moderating material and the reactivity control.

The present invention relates to the technical field of rare earth material preparation, and specifically to a method for preparing ultrafine erbium oxide nanomaterials. The present invention uses ordered macroporous polystyrene as a nanoreactor, and uniformly introduces erbium salt into the pores by an impregnation method. Subsequently, ultrafast laser excitation is used to achieve instantaneous oxidation of the erbium salt to form nanoscale erbium oxide crystals. Finally, a sodium hydroxide solution is used to gently remove the ordered macroporous polystyrene to obtain high-purity erbium oxide nanopowders with uniform particle size. This method can accurately control the particle size and crystallinity by adjusting the laser parameters. The reaction process is rapid and efficient, avoiding traditional high temperature and high pressure conditions, and the process is more environmentally friendly. Sodium hydroxide selectively dissolves the carrier without damaging the erbium oxide particles, ensuring the purity and stable performance of the material. The overall solution is easy to operate, combined with advanced nanoreactor design and ultrafast laser technology, and is suitable for preparing erbium oxide nanomaterials with excellent performance and wide application.

The present invention includes a thermal resistant sandwiched structure and formation for electrostatic chucks. Embodiments also include a process for manufacturing an electrostatic chuck with improved interface integrity. The process can include a step of anodizing both surfaces of a plate and forming a dense layer of aluminum oxide (Al2O3). In aspects, the process uses a step of plasma electrolytic oxidation (PEO). In aspects, the electrostatic chucks described herein have a coating layer that includes Al2O3 (aluminum oxide), Y2O3 (yittrium oxide) and / or Er2O3 (erbium (III) oxide). The high thermal resistance sandwiched structure and formation for electrostatic chucks can form an ultra-stable interface between a ceramic and metal interface.

The invention belongs to the technical field of electrochemical engineering and material surfaces, and particularly relates to a coating for a metal electrolytic cell anode and a coating method.The coating is composed of, by mass, 30-50 parts of rare earth oxide, the rare earth oxide is a mixture of samarium oxide and erbium oxide, and the mass ratio of samarium oxide to erbium oxide is 3-5: 1; 4 to 10 parts of nano diamond powder; 7 to 16 parts of amorphous zirconium boride particles; 5 to 12 parts of nano yttrium oxide stabilized zirconium oxide particles; 10 to 20 parts of an organic silicon resin binder; 1-4 parts of graphene quantum dots; 2 to 6 parts of a fullerene-C < 60 > derivative, wherein the fullerene-C < 60 > derivative is C60 subjected to amino functionalization; the thickness of each hexagonal boron nitride nanosheet is 2-5 layers, the transverse size of each hexagonal boron nitride nanosheet is 200-500 nm, and the surface of each hexagonal boron nitride nanosheet is subjected to hydroxylation treatment; 0.5 to 2.0 parts of a composite dispersant; and the balance of deionized water.

The invention relates to the technical field of rare earth material preparation, in particular to a preparation method of a superfine erbium oxide nano material. The preparation method comprises the following steps: by taking ordered macroporous polystyrene as a nano reactor, uniformly introducing erbium salt into a pore channel through an impregnation method, then realizing instantaneous oxidation of the erbium salt by utilizing ultrafast excitation of laser to form a nano-scale erbium oxide crystal, and finally mildly removing the ordered macroporous polystyrene by adopting a sodium hydroxide solution to obtain the nano-scale erbium oxide crystal. The erbium oxide nano powder with high purity and uniform particle size is obtained. According to the method, the particle size and crystallinity can be accurately controlled by adjusting laser parameters, the reaction process is rapid and efficient, traditional high-temperature and high-pressure conditions are avoided, and the process is more environmentally friendly. Sodium hydroxide selectively dissolves the carrier without damaging erbium oxide particles, so that the purity and stable performance of the material are ensured. The whole scheme is simple and convenient to operate, combines advanced nanoreactor design and ultrafast laser technology, and is suitable for preparing erbium oxide nanomaterials with excellent performance and wide application.

The invention discloses a lanthanide up-conversion heterojunction material and a preparation method and application thereof, and relates to the technical field of up-conversion luminescent nanomaterials, the material comprises: a sensitizer phase composed of tetragonal phase ytterbium oxyfluoride; the activator phase is composed of orthorhombic phase erbium oxyfluoride; wherein the sensitizer phase and the activator phase are interwoven to form a periodic grid heterojunction structure with an atomic-scale sharp interface, the interface distance is 1: 1, and the molar ratio of ytterbium to erbium in the material is 1: 1; the lanthanide up-conversion heterojunction material with the atomic-scale accurate doping characteristic is successfully prepared through an innovative molecular precursor design and combustion synthesis method, and the key performance indexes such as up-conversion quantum yield, energy transfer efficiency, thermal stability and quenching inhibition reach the advanced level; and an important material basis is provided for the development of high-performance photonics devices.